Public REST API Documentation

Count characters, words, lines, paragraphs, and estimated reading time in real-time.

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case.

Compare two text files or code blocks to spot additions, deletions, and line changes.

Analyze word occurrence frequencies and percentage densities in any document.

Strip extra spaces, trailing spaces, tabs, and blank lines from raw text.

Deduplicate list entries and text blocks while preserving original line order.

Generate high-entropy, customizable passwords using Web Crypto API random values.

Compute cryptographic message digests using SHA-1, SHA-256, SHA-512, and MD5 algorithms.

Decode and view JSON Web Token headers, payload claims, and expiration timestamps.

Generate bcrypt password hashes and verify raw string matches against existing hashes.

Analyze password entropy, character diversity, and estimated brute-force crack time.

Encrypt and decrypt text messages using AES-GCM 256-bit encryption and secret passphrases.

Beautify, minify, validate, and inspect JSON payloads with line error reporting.

Format and indent SQL queries for PostgreSQL, MySQL, SQLite, and SQL Server.

Translate standard 5-part cron expressions into plain human readable schedules.

Test and debug JavaScript regular expressions against target text strings with group captures.

Clean, beautify, indent, or compress raw HTML markup.

Compress CSS stylesheets or format selector declarations with clean indentation.

Compress JavaScript scripts or reformat obfuscated code into readable structures.

Write Markdown with real-time sanitized HTML preview and one-click code export.

Encode plain text or UTF-8 strings into Base64 format or decode Base64 back to text.

Encode special characters into URL percent-encoded format or decode percent strings.

Convert text to Hexadecimal, Binary, Octal, or ASCII character codes.

Convert values between length, area, mass, speed, and digital data storage units.

Convert colors between HEX, RGB, HSL, HSV, CMYK, and modern OKLCH CSS values.

Convert epoch Unix timestamps (seconds & milliseconds) to human-readable date strings.

Compare times across major global timezones (UTC, EST, PST, GMT, CET, JST).

Millisecond-accurate web stopwatch with lap time logging.

Customizable 25-minute Pomodoro focus timer with short and long break intervals.

Compare working hours across multiple global timezones to identify optimal meeting slots.

Pick colors from your screen with native EyeDropper API and generate harmonious color palettes.

Resize dimensions and compress JPG/PNG/WEBP files entirely in browser Canvas.

Remove solid white or solid color backgrounds from PNG/JPG graphics client-side.

Generate 16x16, 32x32, 48x48, 180x180, and 512x512 app favicons from any square image.

Design multi-stop linear and radial CSS gradients with instant CSS code export.

Interactive box shadow generator with offset, blur, spread, color, and inset controls.

Calculate fluid responsive typography `clamp(min, preferred, max)` viewport formulas.

Interactive CSS flexbox container layout builder (flex-direction, justify-content, align-items).

Convert SVG markup code into HTML `<img src="data:image/svg+xml;base64,...">` Data URIs.

Inspect your public IPv4/IPv6 address, browser user-agent header, and request metadata.

Query domain registration details, creation dates, registrar info, and name servers.

Query domain DNS records including A, AAAA, MX mail servers, TXT records, and CNAME aliases.

Find approximate geographic city, country, postal code, ASN, and ISP details for any IP.

Calculate IP subnet mask, network address, broadcast address, and host IP ranges.

Search HTTP response status codes (1xx, 2xx, 3xx, 4xx, 5xx) with RFC specifications.

Parse browser name, engine, operating system, and device type from User-Agent strings.

Lookup Content-Type MIME headers for file extensions (.json, .png, .pdf, .wasm).

Preview social sharing cards for Twitter/X, Facebook, LinkedIn, and Discord.

Analyze title tags, meta descriptions, canonical URLs, and H1-H6 heading structure.

Extract all internal/external URLs, anchor text, and image source attributes from any webpage.

Analyze target webpage Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and First Input Delay (FID/INP).

Calculate targeted keyword density percentage and occurrence frequency for specific phrases in raw copy.

Randomly pick winners from list items or divide names into balanced teams.

Convert text strings into retro ASCII art banners for code comments and README headers.

Upload custom images and add top/bottom Impact meme caption text overlays.

Combine multiple PDF files into one or extract page ranges without server uploads.

Convert PNG, JPG, and WEBP image files into PDF documents client-side.

Rasterize PDF pages into high-resolution PNG image graphics.

Calculate percentages, percentage increases, decreases, and relative fractions.

Calculate exact age in years, months, days, hours, and minutes from birthdate.

Calculate the total days, business days, weeks, and months between two dates.

Calculate Body Mass Index (BMI) and health category according to WHO metrics.

Calculate final sale prices, total savings, and sales tax amounts.

Calculate restaurant gratuity percentages and split bills per person.

Calculate monthly loan EMI installments, total interest, and loan amortization.

Calculate image and video aspect ratios (16:9, 4:3, 1:1, 21:9) and missing dimensions.

Calculate gross price, net price, and VAT / Sales Tax amounts (inclusive or exclusive).

Calculate compound interest growth, annual compounding schedules, and total returns.

Fill out itemized invoice forms and download formatted PDF invoices locally.

Convert between USD, EUR, GBP, JPY, CAD, and 150+ global fiat currencies with cached rates.

Generate cryptographically random UUID v4, v1, and ULID strings in bulk.

Generate custom paragraphs, sentences, words, or HTML lists of classic Lorem Ipsum text.

Generate custom QR code graphics for URLs, WiFi credentials, plain text, and contact info.

Transform article titles and strings into SEO-friendly, clean URL slugs.

Generate random numbers within custom minimum/maximum ranges or decimal distributions.

Generate dummy JSON arrays containing fake names, emails, IDs, and dates for API testing.

Generate `.gitignore` files for Node.js, Python, Go, React, Next.js, and Java projects.

Create custom `robots.txt` web crawler rule files with sitemap paths.

Generate HTML `<meta>` tags for titles, descriptions, viewport, and Open Graph social cards.

Generate structured GitHub `README.md` project documentation files with badges.

Generate Apache `.htaccess` web server rules for HTTPS redirect, Gzip compression, and 301 redirects.

Generate valid Google Search Console `sitemap.xml` files from a list of site URLs.

Design 1200x630 social preview OG card graphics for Twitter, LinkedIn, and Facebook.

Calculate text/background color contrast ratios according to WCAG 2.1 AA and AAA standards.

Simulate Protanopia, Deuteranopia, Tritanopia, and Achromatopsia vision for design palettes.

Convert CSV spreadsheets and tabular comma-separated text into structured JSON arrays.

Convert JSON arrays and nested object collections into downloadable CSV spreadsheets.

Convert back and forth between JSON data payloads and human-readable YAML configurations.

Transform XML markup trees into structured JSON objects and vice versa.

Build GitHub Flavored Markdown (GFM) tables with custom alignment and column controls.

Extract typed text, printed documents, and scanned text from images using optical character recognition.

Convert PNG, JPG, WEBP, GIF, and SVG images into Base64 Data URI strings.

Trim start and end timestamps from MP3, WAV, and AAC audio files without server uploads.

Convert MP4, WEBM, and MOV video clips into animated GIF graphics in your browser.

Cut start and end time segments from MP4, WEBM, and MOV video files locally.

Count characters with 280-char limit weighting rules and auto-split long posts into numbered tweet threads.

Generate niche high-engagement hashtag groups for Instagram reels, posts, and TikTok videos.

Dimensions & aspect ratios for X, Instagram, LinkedIn, YouTube, Facebook, and TikTok banners.

Generate custom GDPR & CCPA compliant privacy policy text for websites and apps.

Create custom Terms of Service and Terms & Conditions agreement documents.

Generate limitation of liability and legal disclaimers for finance, health, and software tools.

Create cookie usage disclosure policies for EU ePrivacy & GDPR compliance.

In-browser scientific calculator with sin, cos, tan, log, square roots, and exponentiation.

Calculate mean, median, mode, standard deviation, variance, and range from dataset numbers.

Test integer primality and generate prime factor decompositions for large numbers.

Solve second-degree polynomial equations and compute real or complex roots.

Generate Fibonacci number series up to N terms and compute golden ratio approximations.

Calculate cumulative high school or college GPA based on course grades and credit hours.

Measure your typing speed in Words Per Minute (WPM) and character accuracy percentage.

Calculate reading speed in Words Per Minute (WPM) and estimated book reading time.

Generate barcode graphics for UPC-A, EAN-13, Code 128, and Code 39 product formats.

Validate ISBN-10 and ISBN-13 book identification numbers and calculate checksum digits.

Validate payment card number structure using MOD 10 Luhn checksum algorithm.

Inspect real-time browser window dimensions, screen resolution, device pixel ratio, and orientation.

Inspect and view key-value pairs stored in your browser for the current domain.

Detect browser engine, operating system, touch screen capability, and hardware concurrency.

Inspect document.cookie keys and values set for the current website domain.

Convert written text into natural spoken speech using Web Speech API SpeechSynthesis voices.

Transcribe spoken microphone voice audio into written text using Web Speech API SpeechRecognition.

Generate creative brand and company names from keyword prefixes and industry suffixes.

Generate unique, creative usernames for Discord, GitHub, Twitch, and Twitter.

Generate creative domain name ideas with .com, .io, .dev, and .app TLD extensions.

Validate IBAN format, country code structure, and MOD-97 checksum compliance.

Validate European Union and United Kingdom VAT registration number formats and checksum rules.

Validate email address syntax against RFC 5322 specifications, TLD rules, and disposable domain detection.

Parse, validate, and format phone numbers into E.164, national, and international standards.