Client-Side Engine • 298 High-Precision Utilities • Zero Cloud Storage • Multi-Language

High-Precision Online Utilities Built for Focused Daily Work

A privacy-first suite of calculators, text formatters, image utilities, and developer tools running 100% locally in your browser with zero latency.

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Quick Jumps:
CALCULATORS

Calculators & Converters

59 tools

Practical calculation and conversion tools for finances, dates, measurements, and daily numbers.

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Percentage Calculator

Calculate percentages, percentage increases or decreases, and percentage differences instantly with complete step-by-step formulas.

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Age Calculator

Calculate exact age in years, months, days, hours, and minutes, plus days remaining until next birthday.

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Unit Converter

Convert across length, weight, temperature, area, volume, and speed with high precision and SI standard factors.

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Date Calculator

Find days between dates, add or subtract days/weeks/months/years, and count working business days excluding weekends.

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Discount Calculator

Calculate final discounted price, total savings, and optional sales tax impact for smart shopping and retail math.

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Loan EMI Calculator

Calculate monthly installments (EMI), total interest payable, and total loan repayment with repayment schedules.

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Compound Interest Calculator

Calculate future value, total interest earned, and compound investment growth across monthly and annual compounding frequencies.

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Profit Margin & Markup Calculator

Calculate gross profit, profit margin percentage, and markup percentage from product cost and selling price.

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GST & VAT Calculator

Calculate tax-inclusive and tax-exclusive amounts for GST, VAT, and sales tax with standard rate presets.

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Salary & Hourly Wage Calculator

Convert hourly wages, daily rates, weekly earnings, and annual salary equivalents across customizable working schedules.

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Savings Goal Calculator

Calculate the exact monthly deposit needed to reach your target savings or purchase goal by a specific date.

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Fuel Cost & Trip Calculator

Estimate road trip fuel costs, fuel quantity consumed, and split expenses per passenger based on vehicle efficiency.

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Cooking & Recipe Unit Converter

Scale kitchen ingredients, adjust serving yields, and convert between teaspoons, tablespoons, cups, grams, and ounces.

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Tip and Bill Split Calculator

Calculate tips, tax additions, and split restaurant or shared expenses equally across any party size.

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Personal & Monthly Budget Planner

Plan monthly household income, track essential expenses, and calculate 50/30/20 savings goals in privacy.

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Break-Even Business Calculator

Determine units and sales revenue required to cover fixed overheads and variable unit production costs.

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Asset Depreciation Calculator (Straight-Line)

Calculate annual depreciation schedules, salvage value, and asset book values using straight-line accounting.

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Appliance Electricity Cost Calculator

Estimate daily, monthly, and annual electrical power consumption and utility costs for home appliances.

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Daily Water Intake & Hydration Calculator

Calculate recommended daily fluid hydration targets tailored to body weight, exercise level, and climate.

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College & High School GPA Calculator

Calculate semester Grade Point Average on standard 4.0 weighted and unweighted credit scales.

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Final Exam Grade & Target Marks Calculator

Determine the exact score required on your final exam to achieve your desired target course grade.

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Household Budget Allocator (50/30/20 & Custom)

Allocate household net income across Needs, Wants, and Savings using 50/30/20, 70/20/10, or custom budget rules.

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Rent Affordability Calculator (30% Rule & 40x Income)

Calculate safe maximum monthly rent using standard 30% gross income guidelines and landlord 40x annual income thresholds.

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Overtime Pay Calculator (Time-and-a-Half & Double Time)

Calculate gross earnings with standard 1.5x time-and-a-half overtime, 2.0x double time, and blended hourly rates.

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Time Duration Calculator (Hours, Minutes & Seconds)

Calculate elapsed duration between two clock times or add and subtract hours, minutes, and seconds across midnight.

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Work Hours & Timesheet Calculator

Compute total daily and weekly billable work hours with unpaid lunch breaks, decimal time conversions, and wage estimates.

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Date of Delivery & Shipping Transit Estimator

Estimate postal parcel delivery dates by calculating handling lead time and business shipping days excluding weekends and holidays.

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Percentage Allocation & Share Splitter

Divide budgets, investment portfolios, equity shares, or prize pools into proportional percentage allocations.

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Unit Price Comparison & Best Value Calculator

Compare multiple grocery package sizes, quantities, and prices to identify the lowest cost per ounce, gram, or liter.

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Inflation & Purchasing Power Calculator

Calculate how inflation erodes purchasing power over time and determine future value adjusted for compound inflation.

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Currency Conversion Calculator

Quickly convert between major world currencies (USD, EUR, GBP, INR, JPY, CAD, AUD, CHF) with customizable exchange rates.

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Percentage Point vs Percent Change Calculator

Accurately distinguish between percentage point differences and relative percent change in interest rates and poll figures.

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Weighted Average Calculator

Compute weighted arithmetic means for grades, financial portfolios, unit economics, and data distributions.

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Average, Median & Mode Calculator

Analyze number datasets to compute mean, median, mode, range, and sum with step-by-step statistical summaries.

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Standard Deviation & Variance Calculator

Calculate sample and population standard deviation, variance, mean, and count for statistical data.

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Ratio & Proportion Calculator

Solve proportional equations (A:B = C:D) and simplify mathematical ratios to their simplest irreducible form.

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Mixture & Dilution Calculator

Calculate concentration and volume requirements for chemical dilutions (C1V1 = C2V2) and solvent mixtures.

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Loan Prepayment & Interest Savings Calculator

Calculate how extra monthly or lump-sum mortgage/loan prepayments shorten tenure and save thousands in interest.

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Target Date Countdown & Milestone Calculator

Track real-time countdowns to major target deadlines, project milestones, product launches, and personal events.

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Cash Flow Forecast Calculator

Forecast rolling operational cash flow, runway, and net burn based on cash inflows, operational outflows, and starting cash reserves.

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Accounts Receivable Aging Calculator

Categorize outstanding customer invoices across current, 30-day, 60-day, 90-day, and 120+ day buckets.

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Accounts Payable Due Date Planner

Plan vendor invoice disbursement schedules, optimize payment timing, and capture prompt payment early-settlement discounts.

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Inventory Reorder Point Calculator

Calculate optimal inventory reorder points (ROP) and safety stock levels based on lead time and daily unit velocity.

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Economic Order Quantity (EOQ) Calculator

Determine ideal batch purchase quantities that minimize total inventory holding and ordering setup costs.

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Weighted Average Cost of Capital (WACC) Calculator

Calculate blended cost of capital across equity and debt components for corporate hurdle rates.

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eCommerce Profitability Calculator

Analyze unit economics, gross margins, fulfillment, ad spend, and net profit margins per order.

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Marketplace Commission Calculator

Calculate platform commission take-rates, payment processing fees, and seller payout amounts across online marketplaces.

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Customer Acquisition Cost & LTV Ratio Calculator

Measure customer acquisition cost (CAC), lifetime value (LTV), LTV:CAC efficiency ratio, and payback velocity.

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Invoice Payment Schedule Calculator

Break down large commercial contracts or invoices into structured milestone installment schedules with interest.

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Linear Regression Calculator

Calculate linear regression slope (m), intercept (b), correlation coefficient (r), and coefficient of determination (R²) for paired datasets.

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Moving Average Calculator

Calculate Simple Moving Averages (SMA) and Exponential Moving Averages (EMA) across time-series data.

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Percentile & Quartile Calculator

Calculate Q1 (25th percentile), Median (50th percentile), Q3 (75th percentile), and Interquartile Range (IQR) for statistical distributions.

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Z-Score & Standard Score Calculator

Compute standard z-scores, p-values, and normal distribution probabilities for individual data observations.

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Probability Calculator

Calculate union, intersection, conditional probability, and independent event compound likelihoods.

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Binomial Distribution Calculator

Calculate exact and cumulative binomial probabilities P(X = k) and P(X ≤ k) for n independent Bernoulli trials.

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Normal Distribution Calculator

Calculate standard normal distribution probabilities, cumulative density functions (CDF), and two-tailed confidence areas.

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Sampling Margin of Error Calculator

Calculate statistical margins of error and confidence intervals based on sample size and population proportions.

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A/B Test Statistical Significance Calculator

Evaluate conversion rates between Control and Variant groups to determine statistical significance, p-value, and confidence.

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Data Outlier Detection Tool (IQR & Z-Score)

Detect statistical anomalies and numerical outliers in datasets using Tukey's 1.5×IQR rule and standard 3-sigma Z-scores.

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TEXT TOOLS

Text & Writing Tools

48 tools

Accurate word counts, case manipulation, text cleaning, and placeholder text generation.

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Word & Character Counter

Count words, characters (with and without spaces), sentences, paragraphs, and estimated reading/speaking time in real time.

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Case Converter

Convert text to UPPERCASE, lowercase, Title Case, Sentence case, alternating cAsE, and camelCase with Unicode support.

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Text Cleaner

Strip extra whitespace, normalize Windows/Unix/Mac line endings, remove empty lines, and trim text safely.

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Lorem Ipsum Generator

Generate customizable placeholder dummy text by words, sentences, or paragraphs with optional HTML markup.

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Spell & Typo Checker

Inspect spelling errors, duplicate words, and grammatical typos client-side with complete privacy.

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Text Diff & Comparison Checker

Compare two text versions side-by-side or line-by-line to identify additions, removals, and revisions.

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Duplicate Line Remover

Remove duplicate lines from lists, log files, or text blocks with case sensitivity and sorting controls.

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Find and Replace Tool

Search and replace words, phrases, or regex patterns in large documents with occurrence count tracking.

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Reading & Speaking Time Calculator

Calculate estimated silent reading time and spoken presentation duration for speeches, essays, and blog articles.

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Text to URL Slug Converter

Convert article headlines and titles into clean, SEO-friendly URL slugs with stop-word stripping.

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Markdown Live Previewer & Editor

Edit Markdown in real-time with instant client-side HTML preview rendering and copy capabilities.

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Sentence Counter & Sentence Case Converter

Analyze sentence counts, average sentence length, and convert text to proper grammatical sentence case.

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Email Subject Line Length & Preview Checker

Optimize email subject lines for mobile and desktop inboxes (Gmail, Outlook, iPhone) with live previews.

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Professional HTML Email Signature Generator

Design clean, responsive HTML email signatures compatible with Gmail, Apple Mail, and Outlook.

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Email Address Syntax & Format Validator

Verify email addresses against RFC 5322 syntax standards, detect disposable email domains, and validate MX readiness.

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Text to Binary & Binary to Text Converter

Encode ASCII and UTF-8 strings into 8-bit binary numbers, or decode binary streams back into readable text.

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Text to Hexadecimal & Hex to Text Converter

Convert plain text into hexadecimal strings with configurable delimiters, or decode hex bytes into UTF-8 text.

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Word Frequency & Keyword Density Counter

Analyze word occurrences, keyword density percentages, and recurring phrases with stop-word filtering.

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Reading Level & Flesch-Kincaid Analyzer

Calculate Flesch Reading Ease, Flesch-Kincaid Grade Level, and estimated reading time for any prose.

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Academic Citation Formatter (APA, MLA, Chicago, Harvard)

Generate properly structured bibliographic citations in APA 7, MLA 9, Chicago 17, and Harvard styles.

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Professional Email Draft Helper & Subject Optimizer

Draft business emails with professional greetings, structured templates, clear calls to action, and subject line previews.

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Meeting Agenda Generator & Time-Boxer

Build structured meeting agendas with automated item time allocations, designated discussion leads, and markdown export.

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Meeting Minutes & Action Item Formatter

Transform raw meeting notes into clean, professional minutes with categorized decisions, attendees, and action items.

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Markdown Checklist & Task List Generator

Convert newline-separated task lists into interactive GitHub checkboxes, plain text brackets, or HTML unordered lists.

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Social Media Character Limit Formatter

Monitor real-time character counters and safe limits for X (Twitter), LinkedIn, Meta Ads, SMS, and SEO meta tags.

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Prefix & Suffix Text Adder (Line-by-Line)

Batch prepend prefixes, append suffixes, wrap text in quotes or brackets, and number each line simultaneously.

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Text Line Sorter (Alphabetical, Numerical & Length)

Sort text lists alphabetically (A-Z / Z-A), natural numerical order, character length, or shuffle randomly.

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Acronym Formatter & Name Abbreviation Extractor

Generate capital acronyms and short initialisms from company names, project titles, or phrases with stop-word exclusion.

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Text Annotation & Inline Note Highlighter

Highlight key text passages, attach contextual comments, and export annotated documents in clean HTML or Markdown.

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Plain Text to HTML Converter

Transform raw text into semantic HTML paragraphs, line breaks, headings, and lists with automated escaping.

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HTML to Plain Text Converter

Strip HTML markup and CSS styling from formatted copy, extracting clean, unformatted plain text.

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Unicode Character & Codepoint Inspector

Deconstruct text character by character to reveal Unicode codepoints (U+XXXX), UTF-8 bytes, and HTML entities.

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Whitespace & Invisible Character Inspector

Detect zero-width spaces, non-breaking spaces, soft hyphens, and hidden Unicode formatting artifacts.

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Text Line Numbering Tool

Add customizable sequential line numbers, zero-padding, and delimiters to code, lists, and transcripts.

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Text Column Merger & Delimiter Joiner

Merge two columns of text line by line using custom separators like tabs, commas, pipes, or colons.

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Text-to-Speech Audio Reader

Listen to written text read aloud using natural speech synthesis voices built directly into your browser.

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NATO Phonetic Alphabet Converter

Convert words, callsigns, serial numbers, and codes into standardized NATO phonetic spelling words.

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Text Similarity & Levenshtein Distance Calculator

Compare two text snippets to compute Levenshtein distance, word-level Jaccard similarity, and percentage match.

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Readability Statistics Dashboard

Calculate Flesch Reading Ease, Flesch-Kincaid Grade Level, Coleman-Liau, and Gunning Fog indices in real time.

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Repeated Phrase & N-Gram Finder

Find recurring phrases, overused expressions, and repeated n-grams to improve writing conciseness and punch.

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Text Similarity Comparison Dashboard

Compare two texts using Jaccard token similarity, Levenshtein edit distance, and shared word overlap.

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Translation Comparison Workspace

Side-by-side translation workspace to compare source and localized target strings across languages with length ratios.

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Inclusive Language Helper

Highlight outdated or non-inclusive terminology and recommend modern, respectful alternatives.

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Editorial Style Guide Checker

Check text against editorial conventions including title capitalization, Oxford commas, and number formatting rules.

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Content Brief Generator

Generate comprehensive writer briefs with target audiences, word count targets, core themes, and SEO focus keywords.

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FAQ Generator from Text

Extract question-and-answer pairs from raw documentation, product specifications, or articles.

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Product Description Quality Checker

Analyze e-commerce product copy for benefit-driven language, specifications clarity, and conversion readiness.

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Social Media Character Limit Validator

Validate post lengths across Twitter/X, LinkedIn, Facebook, Instagram, and Threads with live progress bars.

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IMAGE TOOLS

Image & File Tools

56 tools

Fast, private client-side image compression, resizing, and format conversion without uploading files to remote servers.

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Image Compressor

Compress PNG, JPEG, and WebP images directly in your browser. Maintain visual clarity while reducing file size privately.

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Image Resizer

Resize images by pixel dimensions or scale percentage while locking aspect ratios with high-quality canvas resampling.

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Image Format Converter

Convert images between PNG, JPEG, and WebP formats purely client-side with zero file uploads and complete privacy.

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Online Image Cropper

Crop images client-side with aspect ratio presets (1:1, 4:3, 16:9, 9:16) and custom pixel dimensions.

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Image to PDF Converter

Convert single or multiple images into a clean PDF document locally without uploading files to any remote server.

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Client-Side PDF Merger

Combine two or more PDF documents into a single consolidated PDF file completely inside your web browser.

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PDF Page Splitter & Extractor

Extract specific page ranges or individual pages from a PDF document into a new independent PDF.

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PDF Metadata Inspector

Inspect PDF page counts, author, creator software, creation date, dimensions, and version information safely.

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Image Watermark Tool

Stamp custom copyright watermarks onto photos and graphics with adjustable font size, opacity, and positioning.

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Favicon & App Icon Generator

Generate complete favicon packages (16x16, 32x32, 48x48, 180x180) and HTML head tags from any logo or image.

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File Size & Data Storage Converter

Convert data storage units between decimal metrics (KB, MB, GB, TB) and binary computing standards (KiB, MiB, GiB, TiB).

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Image Color Picker & Eyedropper Inspector

Upload or drop an image and click anywhere to extract pixel colors in HEX, RGB, and HSL formats.

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Image Background Color Replacer & Eraser

Replace solid background colors with transparent alpha or new custom colors using canvas tolerance matching.

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Image to Base64 Data URI Converter

Encode PNG, JPEG, SVG, or WebP images into Base64 Data URIs for inline HTML and CSS embedding.

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Base64 to Image Decoder & Previewer

Decode Base64 Data URIs back into full-resolution binary image files with instant download and preview.

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CSV Table Viewer & Interactive Formatter

Parse, inspect, search, and filter comma/tab delimited CSV data in an interactive browser spreadsheet table.

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CSV to JSON Structured Data Converter

Transform spreadsheet CSV rows into structured JSON arrays of objects with automatic type detection.

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JSON to CSV Spreadsheet Exporter

Convert JSON arrays or nested API responses into delimited CSV spreadsheets ready for Excel and Sheets.

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PDF Page Reorder & Arrangement Utility

Reorganize, rearrange, and reverse PDF document pages locally in your browser using secure PDF-Lib.

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Image DPI & Print Size Calculator

Calculate exact physical print dimensions in inches and centimeters from digital pixel resolution across 300, 150, or custom DPI.

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Image Color Palette Extractor & Swatch Generator

Extract dominant color palettes, HEX codes, and CSS variable definitions directly from uploaded images using in-browser canvas.

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Image Flip & Rotate Tool (Lossless Canvas)

Rotate photos by 90, 180, or 270 degrees and mirror horizontally or vertically without losing image sharpness.

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Transparent Image Checker & Alpha Channel Inspector

Verify whether PNG or WebP graphics contain true alpha transparency and test contrast against diverse background colors.

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PDF Metadata Viewer & Privacy Cleaner

Inspect and strip hidden author names, creation software, and timestamps from PDF documents client-side using PDF-Lib.

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PDF Page Rotation Tool (Permanent Clockwise Correction)

Permanently rotate all pages or specific page numbers in your PDF document by 90, 180, or 270 degrees clockwise.

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Document Page Count & Book Spine Estimator

Estimate printed manuscript page counts, double-sided sheet requirements, and book spine thickness from word count.

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File Checksum & SHA Hash Calculator (WebCrypto)

Compute cryptographic SHA-256, SHA-1, and SHA-512 file checksums and verify integrity hashes in your browser without uploads.

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Image EXIF Metadata Viewer

Extract and inspect camera EXIF tags, GPS coordinates, shutter speed, ISO, and lens info securely in your browser.

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Image Metadata & EXIF Remover

Strip GPS location data, camera information, and timestamps from JPEG/PNG images before sharing publicly.

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Image Contact Sheet & Thumbnail Grid Generator

Combine multiple photo uploads into a clean thumbnail proof sheet / contact sheet grid for client review.

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Image Pixel Dimension & Aspect Ratio Calculator

Calculate proportional width and height scaling and file size estimates when resizing digital graphics.

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Image Border & Canvas Padding Tool

Add custom colored borders, frame padding, and canvas expansion margins around graphics and screenshots.

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Image to Text Optical Character Recognition (OCR)

Extract editable text from images, scanned documents, receipts, and screenshots securely in your browser.

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PDF Text Extractor

Extract plain text content and word counts from PDF documents page by page without installing desktop software.

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PDF Visual Watermark Tool

Stamp custom confidential or copyright text watermarks diagonally across PDF pages with adjustable opacity.

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PDF Form Field & AcroForm Inspector

Inspect fillable interactive form fields, field names, types, and values embedded inside PDF files.

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PDF Page & Image Extractor

Render and export PDF document pages into high-resolution PNG image files for presentations and archiving.

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Image Aspect Ratio Calculator

Calculate aspect ratios, simplify fractions, calculate missing dimensions, and detect ratios automatically from uploaded images.

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Image Quality Comparison Tool

Compare image quality, visual compression artifacts, and file size savings across formats (JPEG, WebP, PNG) in real time.

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Image Sequence Renamer

Upload multiple image frames or photos, apply standardized sequential numbering (e.g. frame_001.png), and download renamed files.

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Image Sprite Sheet Generator

Combine multiple icons, game sprites, or UI frames into a single optimized PNG texture sheet with instant CSS background-position classes.

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Animated GIF Frame Extractor

Upload any GIF or animated graphic to unpack and preview individual animation frames with instant one-click PNG downloads.

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Animated GIF Creator

Upload multiple still images to compile an animated loop, adjust playback speed/frame delay, and preview in real time.

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Audio Metadata Viewer

Inspect metadata tags, track titles, artist, album, bitrate, sample rates, channels, and audio encoding specs from MP3, WAV, OGG, and FLAC files.

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Audio Waveform Visualizer

Decode and visualize audio sound waves, amplitude peaks, stereo balance, and export crisp waveform images.

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Audio Silence Detector

Analyze podcast, voiceover, or audio tracks to pinpoint silent pauses, dead air, and export cue points for editing.

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Video Aspect Ratio Crop Calculator

Calculate letterbox, pillarbox, and center-crop dimensions for 9:16 Reels/TikTok, 1:1 Instagram, and generate copyable FFmpeg crop filters.

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DOCX Text Extractor

Extract pure formatted text, paragraphs, and words from any .docx Word document directly in your browser without uploading to a remote server.

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ODT Text Extractor

Extract text, headers, and paragraphs from LibreOffice and OpenOffice .odt documents instantly.

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EPUB Metadata Viewer

Inspect eBook title, creator/author, publication date, publisher, language, ISBN/UUID identifier, and chapter manifest from any EPUB file.

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EPUB to Plain Text Converter

Convert and unpack all XHTML chapters in an EPUB digital book into one clean, formatted plain text file.

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ZIP Archive Inspector

Inspect files inside .zip, .jar, and .apk archives without unzipping to disk: view uncompressed sizes, compression ratios, CRC32 checksums, and folder hierarchies.

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ZIP File Creator

Bundle multiple files or text notes into a single standard downloadable .zip file right inside your browser.

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File Batch Renamer

Rename file batches using prefix/suffix, search-and-replace, case changes, and generate copyable Bash and PowerShell rename scripts.

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File Extension Identifier

Identify unknown file formats by extension or by uploading a file to inspect magic numbers, MIME types, and default applications.

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Delimited Text Converter

Convert data between CSV (comma), TSV (tab), Semicolon (;), Pipe (|), and custom separators with quotation and whitespace trimming controls.

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UTILITIES

Everyday Digital Utilities

68 tools

Essential daily utilities including QR codes, secure passwords, timezone converters, and health indexes.

Client-Side

QR Code Generator

Generate scannable QR codes for website URLs, raw text, email addresses, and Wi-Fi networks with instant PNG download.

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Password Generator

Create cryptographically strong passwords using browser crypto APIs. Customize length, uppercase, lowercase, numbers, and symbols.

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Time Zone Converter

Convert date and time between global IANA time zones with automatic Daylight Saving Time (DST) calculation and UTC offsets.

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BMI Calculator

Calculate Body Mass Index (BMI) using metric or imperial measurements, with standard adult WHO weight categories and health disclaimers.

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UUID / GUID Generator (v4)

Generate cryptographically secure bulk RFC 4122 compliant UUID v4 identifiers using CSPRNG randomness.

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Cryptographic Random Number Generator

Generate truly random numbers or integer sequences within any custom range using hardware CSPRNG entropy.

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Random List Picker & Fair Shuffler

Pick random winners, draw raffle prizes, or shuffle lists fairly using the unbiased Fisher-Yates algorithm.

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Online QR Code Scanner & Decoder

Scan and decode QR code images directly in your browser without sending private photos to any remote server.

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Wi-Fi QR Code Generator

Generate scannable Wi-Fi QR codes so guests can connect to your wireless network without entering passwords.

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Unix Epoch Timestamp Converter

Convert Unix epoch timestamps to human-readable UTC/Local dates and format human dates into seconds or milliseconds.

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IP Address Analyzer & CIDR Lookup

Analyze IPv4 and IPv6 addresses to determine family, CIDR classification, private/public status, and loopback ranges.

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Common Network Service Ports Directory

Search standard IANA service port numbers, transport protocols (TCP/UDP), and common vulnerability/firewall descriptions.

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Custom QR Code Stylist & Color Designer

Design custom high-contrast QR codes with custom color palettes, error correction levels, and SVG/PNG export.

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Wi-Fi & Password Entropy Strength Tester

Calculate Shannon bits of entropy, evaluate character set combinations, and estimate brute-force cracking resistance.

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Memorable Multi-Word Passphrase Generator

Generate Diceware-style memorable multi-word passphrases using cryptographically secure random values.

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Date & Timestamp Multi-Format Converter

Convert calendar dates simultaneously across ISO 8601, RFC 2822, UNIX epoch timestamps, UTC, and SQL DATETIME.

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Calendar Week Number & Day of Year Calculator

Calculate ISO-8601 calendar week numbers, day of the year progress, and days remaining for any date.

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Business Working Days & Hours Calculator

Calculate working business days, weekend days, and billable work hours between two dates with holiday deduction.

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Multi-Timezone World Clock Dashboard

Live digital world clocks across key global financial and technological hubs with real-time local offsets.

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Data Download & Transfer Time Calculator

Estimate network download and upload transfer durations across any file size and connection bandwidth.

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QR Code Batch Generator

Generate dozens of high-resolution QR codes simultaneously from a list of URLs or text lines with individual PNG downloads.

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Client-Side

Barcode Generator (Code 128 Canvas)

Generate printable Code 128 linear barcodes for retail inventory, shipping labels, and product tagging on HTML5 canvas.

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Client-Side

Password Entropy & Strength Estimator (Shannon Bits)

Evaluate cryptographic Shannon entropy bits, character pool size, and estimated brute-force crack time against GPU attacks.

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Client-Side

Clipboard Text Sanitizer & Invisible Character Cleaner

Sanitize copied text by stripping invisible zero-width spaces, replacing curly smart quotes, and normalizing Unicode spaces.

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Client-Side

Personal Information (PII) Redaction & Masking Tool

Detect and mask emails, phone numbers, credit card sequences, IP addresses, and SSNs before sharing confidential documents.

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Client-Side

Printable Emergency Contact (ICE) Card Generator

Create a credit-card-sized In Case of Emergency (ICE) medical and contact card to print and keep in your wallet or backpack.

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Client-Side

Daily Habit Tracker & Streak Logger (LocalStorage)

Track daily recurring habits, maintain motivation with day streaks, and celebrate completion milestones in private LocalStorage.

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Client-Side

Pomodoro Focus Timer & Productivity Clock

Boost productivity with 25-minute focus intervals and restorative 5-minute or 15-minute breaks with audio notifications.

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Client-Side

Barcode & QR Code Scanner

Scan and decode 1D/2D barcodes and QR codes from image files or your device webcam with zero server tracking.

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Client-Side

Secure Random Token & Secret Generator

Generate cryptographically strong random tokens, auth nonces, and session keys using browser hardware entropy.

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Client-Side

API Key Pattern & Token Generator

Generate realistic development API keys following standard industry conventions (Stripe, GitHub, AWS, Slack).

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Client-Side

Browser Local Storage & Session Explorer

Inspect, filter, edit, delete, and export items stored in your browser localStorage and sessionStorage.

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Client-Side

Browser Web API & Feature Capability Checker

Audit modern web platform APIs and hardware capability support in your current browser engine.

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Client-Side

Screen Resolution & Viewport Diagnostic Checker

Inspect your physical screen resolution, active CSS viewport dimensions, device pixel ratio (DPR), and orientation.

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Client-Side

Keyboard Shortcut Cheat Sheet Reference

Instant searchable cheat sheet for VS Code, Google Chrome, Windows, macOS, Git, and Bash terminal workflows.

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Client-Side

World Date & Meeting Time Planner

Coordinate global team meetings across international timezones with working-hour visual overlap indicators.

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Client-Side

Offline Notes Scratchpad & Markdown Editor

A distraction-free, auto-saving notepad that stores your notes locally in your browser with Markdown export.

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Client-Side

Weighted Decision Matrix (Pugh Matrix) Calculator

Compare competing options across weighted criteria to make objective, data-backed strategic decisions.

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Client-Side

Business Days Deadline Planner

Calculate project deadlines and target delivery dates by adding working business days while excluding weekends and holidays.

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Client-Side

Project Milestone Planner

Plan project phases, calculate milestone delivery dates based on task durations, and export a milestone roadmap table.

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Client-Side

Effort Estimator (PERT Three-Point)

Calculate expected project effort and confidence intervals using the standard PERT formula (Optimistic + 4×Likely + Pessimistic) / 6.

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Client-Side

Resource Capacity Planner

Model team bandwidth, calculate total weekly hours, and identify over-allocated or under-utilized resources.

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Client-Side

Task Priority Matrix

Score tasks across Impact, Effort, and Urgency to rank work into Quick Wins, Major Projects, Fill-Ins, and Thankless Tasks.

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Client-Side

RACI Matrix Generator

Create RACI matrices (Responsible, Accountable, Consulted, Informed) and validate governance rules.

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Client-Side

Risk Register Generator

Document project risks, calculate risk scores (Probability × Impact), and track mitigation action plans.

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Client-Side

Decision Log Manager (ADR)

Record architectural, product, and technical decisions with context, consequences, and approval statuses.

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Client-Side

Meeting Cost Calculator

Calculate the true financial cost of meetings based on attendee count, average salaries, and duration with live ticker.

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Client-Side

Project Status Report Generator

Compile professional project updates with Red/Amber/Green health indicators, accomplishments, and risks.

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Client-Side

Personal Kanban Board

Organize daily workflows into Backlog, In Progress, and Done columns with local storage persistence.

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Client-Side

Personal Task Time Allocator

Budget your daily working hours across tasks, track remaining time, and avoid daily over-commitment.

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Eisenhower Matrix Exporter

Sort tasks into Do First, Schedule, Delegate, and Eliminate quadrants, and export a clean markdown task plan.

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Weekly Strategic Planner

Plan top weekly goals and daily agendas across Monday through Sunday with in-browser saving.

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Client-Side

Shift Schedule Generator

Generate balanced rotating schedules (Day, Night, Off) for 24/7 operations, hospital, or support teams.

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Client-Side

Leave Balance & PTO Calculator

Calculate accrued paid time off (PTO), track leave taken, and forecast year-end balance.

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Client-Side

Project Timeline Table Generator

Build clear project delivery schedules with visual status badges, deliverables, and copyable Markdown tables.

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Client-Side

Retrospective Workshop Board

Run sprint reviews with Mad/Sad/Glad columns, add feedback notes, upvote points, and generate action items.

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Team Workload Balancer

Compare allocated hours across teammates to prevent employee burnout and distribute workload evenly.

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Client-Side

Personal Goal Progress Tracker (OKR)

Track key results, metric completion percentages, deadlines, and milestones toward personal and professional goals.

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Client-Side

Alt Text Drafting Workspace

Draft clear, concise alternative text for screen readers, check character count limits, and copy valid accessible HTML markup.

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Client-Side

Accessible Table Markup Generator

Convert plain CSV or tabular text into fully accessible HTML tables with <caption>, th scope="col", and scope="row".

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Client-Side

Form Accessibility Checklist (WCAG 2.1)

Audit web forms for label associations, error descriptions, keyboard submit readiness, and autocomplete attributes.

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Client-Side

Keyboard Navigation Test Checklist

Step-by-step interactive testing guide for tab stop sequences, escape dismissals, skip links, and modal focus traps.

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Client-Side

Color Vision Deficiency Simulation Tool

Simulate how colors and images appear to individuals with Protanopia (red-blind), Deuteranopia (green-blind), Tritanopia (blue-blind), or Achromatopsia.

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Client-Side

Image Privacy Preview

Check photos for leaked GPS coordinates, camera serial numbers, and sensitive metadata before sharing publicly.

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Client-Side

Clipboard Format Inspector

Inspect what applications copy into your system clipboard: analyze plain text, HTML chunks, and binary payloads.

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Client-Side

Browser Storage Usage Estimator

Inspect exact browser storage usage, available quota, IndexedDB, and localStorage consumption.

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Client-Side

Privacy Policy Section Builder (GDPR / CCPA)

Generate tailored privacy policy clauses for website cookies, server logs, analytics, and user rights.

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Client-Side

Website Launch Readiness Checklist

Ensure complete launch readiness across Security, SEO, Performance, Favicons, 404 handlers, and SSL before going live.

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DEVELOPER TOOLS

Developer & Web Tools

58 tools

Standards-compliant JSON formatting, encoding, decoding, and cryptographic hashing tools.

Client-Side

JSON Formatter & Validator

Beautify, validate, and minify JSON strings with pinpoint syntax error reporting and clear line/column indications.

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Base64 Encoder & Decoder

Encode and decode Base64 data with comprehensive UTF-8 multibyte character support and invalid format validation.

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URL Encoder & Decoder

Encode and decode URI components and query strings safely with standards-compliant RFC 3986 percent encoding.

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Client-Side

Hash Generator

Generate cryptographic hashes including SHA-256, SHA-1, SHA-384, SHA-512, and MD5 client-side in real time.

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Client-Side

HTML Entity Encoder & Decoder

Encode characters to named or numeric HTML entities for web safety, or decode existing entity references.

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CSS Formatter & Minifier

Beautify messy CSS stylesheets with consistent indentation or minify CSS rules to reduce transfer payload.

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Client-Side

JavaScript Formatter & Minifier

Format, indent, and beautify JavaScript code or compress whitespace and comments safely in your browser.

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Client-Side

XML Formatter & Validator

Format, indent, and validate XML documents, sitemaps, RSS feeds, or SVG markup using standard DOMParser.

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Regular Expression Tester & Matcher

Test JavaScript regular expressions with real-time match highlighting, group extraction, and flag toggling.

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Client-Side

JSON Web Token (JWT) Decoder

Decode JSON Web Tokens (JWT) to inspect header algorithms, payload claims, and expiration timestamps safely.

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Client-Side

Cron Expression Helper & Explainer

Build, understand, and translate 5-field cron schedule expressions into plain human-readable descriptions.

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Client-Side

SQL Query Formatter & Beautifier

Format, indent, and uppercase SQL keywords in MySQL, PostgreSQL, SQLite, and MariaDB queries.

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Client-Side

SQL Query Syntax Linter & Safety Validator

Lint SQL syntax, check quote/parentheses balance, and detect dangerous unconstrained UPDATE or DELETE statements.

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Client-Side

HTTP Status Codes Reference & Debugging Guide

Comprehensive RFC 9110 HTTP status code reference with explanations, caching rules, and troubleshooting tips.

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Client-Side

MIME Type & File Extension Directory

Lookup standard MIME Content-Type headers by file extension or search by Media descriptor for APIs and servers.

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Client-Side

Modern HTML5 Starter Boilerplate Generator

Generate production-ready HTML5 starter boilerplate templates configured with modern viewport tags and metadata.

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Client-Side

URL Query String Parameter Parser & Builder

Deconstruct complex URLs into query parameters, edit key-value pairs, and re-encode clean URLs automatically.

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Client-Side

Website HTTP Response Headers & Security Inspector

Audit HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy) with private SSRF protections.

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Client-Side

YAML Formatter, Validator & JSON Converter

Format YAML snippets, validate syntax indentation, and convert YAML directly to clean JSON client-side.

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Client-Side

TOML Formatter & Config Validator

Lint and reformat Tom's Obvious Minimal Language (TOML) configuration files and verify key-value structures.

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Client-Side

Markdown Table Generator (GFM Interactive Grid)

Visually design, edit, and align GitHub Flavored Markdown (GFM) tables with live interactive rows and columns.

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Client-Side

HTML Accessibility (a11y) Checker (WCAG 2.1 Audit)

Audit HTML snippets for missing alt tags, empty buttons, missing form labels, and ARIA violations in your browser.

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Client-Side

HTTP Request Header Builder (cURL & Fetch Exporter)

Construct REST API headers (Authorization, Accept, Content-Type) and export cURL and JavaScript fetch snippets.

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Client-Side

Web Color Contrast Checker (WCAG 2.1 AA & AAA Conformance)

Test text and background color combinations against W3C WCAG accessibility standards for normal text, large text, and UI components.

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Client-Side

GraphQL Query Formatter & Minifier

Prettify, format, indent, and minify GraphQL queries, mutations, subscriptions, and fragments with syntax validation.

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Client-Side

GraphQL Schema (SDL) Explorer & Inspector

Inspect and parse GraphQL Schema Definition Language (SDL) schemas, browsing types, queries, and mutations.

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Client-Side

Dockerfile Formatter & Linter

Format Dockerfile instructions to uppercase syntax and lint for container security and optimization anti-patterns.

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Client-Side

.gitignore File Generator

Compose clean, production-ready .gitignore files by selecting languages, frameworks, operating systems, and IDEs.

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Client-Side

Git Command Reference & Workflow Guide

Comprehensive searchable cheat sheet for Git workflows including undoing commits, stashing, rebasing, and reflog.

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Client-Side

Environment Variable (.env) File Generator

Build, validate, format, and download .env configuration files with proper string escaping and syntax checks.

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Client-Side

URL Query String Builder & Parameter Composer

Visually compose, encode, and format URL query parameters with live preview and encoding safeguards.

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Client-Side

HTTP Response Security Header Analyzer

Audit raw HTTP response headers for essential security policies (HSTS, CSP, X-Frame-Options) and calculate a grade.

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Client-Side

Web App Manifest (PWA) Generator

Generate production-ready web application manifest files (manifest.webmanifest) for installable Progressive Web Apps.

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Client-Side

Content Security Policy (CSP) Header Builder

Construct robust Content Security Policy rules to protect web apps from XSS, code injection, and clickjacking.

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Client-Side

OpenAPI Specification Viewer

Paste OpenAPI or Swagger JSON specifications to parse endpoints, HTTP methods, parameters, and documentation models.

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Client-Side

OpenAPI Mock Response Generator

Generate realistic dummy JSON responses directly from JSON Schema or OpenAPI data models.

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Client-Side

API Payload Comparison Tool

Compare two JSON API responses side-by-side to highlight added keys, deleted fields, and value modifications.

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Client-Side

JSON Schema Validator

Validate JSON payloads against JSON Schema definitions to check required properties and data types.

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Client-Side

Semantic Version (SemVer) Comparator

Compare two Semantic Version strings (e.g. 2.1.0-beta.1 vs 2.1.0) and identify breaking major, feature, or patch releases.

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Client-Side

Changelog Generator (Keep a Changelog)

Convert git commit logs into standard Keep a Changelog releases sorted by Added, Fixed, and Performance.

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Client-Side

Git Branch Naming Validator

Audit git branch names against refspecs rules, forbidden characters, and team conventions (e.g. feature/PROJ-101-title).

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Client-Side

Git Commit Message Validator

Check commit messages against Conventional Commits specification, subject line lengths, and imperative mood.

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Client-Side

Test Case Generator from Requirements

Transform product requirements and user stories into structured Given-When-Then BDD test specifications.

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Client-Side

Log File Pattern Analyzer

Analyze server and app logs to detect ERROR and WARN frequencies, HTTP status code distributions, and anomalies.

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Client-Side

DNS Record Reference & Formatter

Format valid DNS records for A, AAAA, CNAME, MX, TXT, and CAA with copyable BIND zone syntax.

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Client-Side

DNS Zone File Syntax Checker

Check zone file syntax, origin directives, default TTL values, and missing trailing dots on FQDNs.

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Client-Side

Email Authentication Record Builder (SPF / DMARC)

Generate RFC-compliant SPF and DMARC TXT records to protect domain email delivery from spoofing and phishing.

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Client-Side

DKIM Record Formatter & Inspector

Format public DKIM keys into valid 255-character chunked TXT records for DNS providers like Cloudflare, Route53, and BIND.

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Client-Side

Certificate Expiry Date Calculator

Calculate remaining certificate lifespan, renewal countdown deadlines, and recommended Let's Encrypt renewal schedules.

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Client-Side

TLS Configuration Reference (Mozilla SSL)

Generate secure TLS v1.2/1.3 configurations, cipher suites, and forward secrecy directives for Nginx and Apache.

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Client-Side

HTTP Cookie Attribute Inspector

Inspect HTTP Set-Cookie headers for Secure, HttpOnly, SameSite, and domain scoping best practices.

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Client-Side

Security Headers Policy Builder

Generate HSTS, X-Content-Type-Options, X-Frame-Options, and Referrer-Policy response headers.

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Client-Side

CORS Configuration Explainer

Configure Access-Control-Allow-Origin, allowed methods, credentials, and preflight max-age headers.

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Client-Side

Web Redirect Chain Analyzer for Pasted Data

Analyze pasted redirect chains from cURL or DevTools to identify redirect loops, protocol hops, and SEO loss.

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Client-Side

DPDP Act Compliance Readiness Self-Assessment

Self-assessment readiness evaluation engine for India DPDP Act 2023. Evaluates Data Fiduciary notices, consent architecture, Grievance Officer SLAs, and generates an informational readiness summary.

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Client-Side

Cyber Resilience Act (CRA) Conformity Self-Assessment

Cybersecurity readiness self-assessment for digital products under EU Cyber Resilience Act (Regulation (EU) 2024/2847). Evaluates Annex I security-by-design, RFC 9116 security.txt, and SBOM transparency.

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Client-Side

DPDP & Cyber Resilience Act Compliance Verifier

Interactive audit engine verifying websites against India DPDP Act 2023 and EU Cyber Resilience Act (CRA 2024/2847). Evaluates RFC 9116 security.txt, Data Fiduciary notice, Grievance Officer, and security-by-design.

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Client-Side

Malicious IP Detector & Reputation Inspector

Client-side IP threat intelligence detector, Bogon/RFC 1918 filter, batch server access log auditor, and multi-platform firewall/WAF rule generator powered by sefinek/Malicious-IP-Addresses.

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SEO TOOLS

SEO & Webmaster Tools

9 tools

Search engine optimization utilities, SERP simulators, Schema.org generators, and meta directive analyzers.

Client-Side

Robots.txt Generator & Directives Builder

Create SEO-compliant robots.txt directives for Googlebot, Bingbot, and AI crawlers with sitemap integration.

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Client-Side

SEO & Social Graph Meta Tag Generator

Generate SEO meta tags, OpenGraph (Facebook/LinkedIn), and Twitter Card markup with live visual search previews.

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Client-Side

Open Graph Preview & Social Meta Tag Generator

Preview how URLs look when shared on X, Facebook, LinkedIn, or Discord and generate complete og:tag and Twitter markup.

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Client-Side

Sitemap XML Generator (Google Search Console Ready)

Generate valid, standards-compliant sitemap.xml files with configurable priority, changefreq, and lastmod tags.

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Client-Side

Structured Data Schema Generator (JSON-LD)

Generate valid Schema.org JSON-LD markup for Articles, Products, Organizations, Local Businesses, and FAQs for Google Rich Results.

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Client-Side

Google SERP Snippet Simulator & Pixel Width Checker

Simulate desktop and mobile Google SERP search results with real-time title pixel width (600px) and meta description truncation gauges.

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Client-Side

FAQ Schema (JSON-LD) Generator

Create valid Google-compliant Schema.org FAQPage JSON-LD rich snippet code with instant validation, copy, and download.

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Client-Side

Keyword Density & N-Gram Frequency Checker

Analyze 1-word, 2-word, and 3-word n-gram density, total word count, and stop-word filtered prominence to optimize search copy.

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Client-Side

Canonical Tag & Pagination Link Builder

Construct canonical tags, clean duplicate URL tracking query strings, and generate pagination rel=prev / rel=next directives.

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