Your go-to toolbox
Free, fast, and privacy-friendly tools that run entirely in your browser. No signup. No tracking. No nonsense.
📄 PDF Tools
Merge, split, and edit PDFs in-browser
Add Page Numbers
Automatically stamp sequential page numbers onto any PDF document securely in your browser.
Compress PDF
Reduce PDF file size securely directly in your browser without uploading to external servers.
Delete PDF Pages
Securely remove selected pages from a PDF document entirely in your browser.
Image to PDF
Securely convert multiple images (JPG, PNG, WebP) into a single PDF document in your browser.
Markdown to PDF
Seamlessly convert Markdown text into a cleanly formatted, downloadable PDF entirely in your browser.
Merge PDF
Securely combine multiple PDF files into a single, continuous document directly in your browser.
PDF Metadata Editor
Securely view and edit PDF metadata tags like title, author, and keywords in your browser.
PDF to Images
Securely convert PDF pages into high-resolution PNG or JPG image files directly in your browser.
Protect PDF
Secure your PDF documents with strong encryption passwords and restrict viewing permissions.
Rearrange PDF Pages
Visually reorder and move individual pages within a PDF file safely within your browser.
Rotate PDF Pages
Fix upside-down PDF documents by rotating pages 90°, 180°, or 270° directly in your browser.
Split PDF
Extract specific pages or split a large PDF into individual files securely within your browser.
Unlock PDF
Remove passwords from your protected PDF documents natively inside your web browser.
Watermark PDF
Secure your documents by adding custom text or image watermarks to PDF pages locally.
🧮 Calculators
Calculate and compute values
Age Calculator
Calculate precise age between two dates in years, months, and days with our free online age calculator.
Aspect Ratio Calculator
Free online aspect ratio calculator for images, video, and UI design. Instantly scale dimensions proportionally.
Percentage Calculator
Perform quick and accurate percentage math for discounts, growth margins, and ratios.
Unix Timestamp Converter
Convert raw Unix epoch timestamps into formatted human-readable dates and exact times instantly.
🔄 Encoders & Decoders
Encode and decode data formats
Base64 Encoder / Decoder
Encode and decode text and data to/from Base64 format instantly. Supports URL-safe mode and live conversion.
HTML Entity Converter
Securely escape or unescape HTML entities (<, >, &, etc.) for safe web embedding.
ROT-N Cipher
Encrypt and decrypt text using a customizable Caesar cipher (ROT13) instantly.
Text ↔ ASCII Codes
Instantly translate text characters to their decimal ASCII or Unicode code point values and back.
Text ↔ Binary
Convert text strings to formatted 8-bit binary code accurately (0s and 1s) and back.
Text ↔ Hex
Instantly convert text to hexadecimal UTF-8 character codes and decode hex back to string.
Text to Morse Code
Accurately encode or decode text to Morse code with built-in Web Audio API tone playback.
Unicode Inspector
Analyze individual text characters to reveal their exact Unicode point, official name, and hex bytes.
Universal Base Converter
Convert numbers across any base (binary, octal, decimal, hex) instantly with our universal base converter.
URL Encoder / Decoder
Instantly encode or decode URL components using percent-encoding for safe web links.
❤️ Health & Fitness
Health and fitness calculators
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Find out your weight category based on WHO guidelines.
BMR Calculator
Calculate your Basal Metabolic Rate (BMR) accurately to determine how many calories your body burns at rest.
Body Fat Calculator
Estimate your body fat percentage accurately using the U.S. Navy tape measure method.
Calorie Calculator
Calculate your daily calorie needs for weight loss, maintenance, or muscle gain.
Ideal Weight Calculator
Calculate your ideal body weight accurately based on height, gender, and scientifically-backed formulas.
Pace Calculator
Calculate your exact running pace, total time, or race distance for effective marathon training.
💻 Developer
Developer utilities
Box Shadow Generator
Visual CSS box-shadow generator. Adjust sliders for offset, blur, spread, and copy the CSS instantly.
Chmod Calculator
Visual checkbox UI for calculating Unix file permissions. Converts between symbolic, octal, and numeric modes.
Cron Expression Parser
Translate complex cron expressions into human-readable English and preview upcoming run dates.
CSS Filter Generator
Visual CSS image filter generator. Adjust blur, brightness, contrast, hue, and copy the CSS instantly.
HTTP Status Code Reference
Searchable reference guide for all HTTP status codes, complete with descriptions and API usage tips.
JWT Decoder
Safely decode and inspect JSON Web Tokens (JWT) natively without sending data to servers.
RegEx Tester
Interactive RegEx playground to test, debug, and highlight matching regular expressions in real-time.
Screen Info
Instantly detect your exact screen resolution, viewport size, and device pixel ratio (DPR).
Storage Viewer
Inspect, edit, and delete localStorage and sessionStorage keys instantly within your browser.
String Escaper
Quickly escape and unescape text strings for safe use inside JavaScript, JSON, HTML, CSV, and SQL.
Tailwind Color Reference
Searchable reference cheat sheet for all Tailwind CSS v3 and v4 default color palettes.
URL Builder
Interactively construct and test complex URLs from individual components like host, path, and queries.
URL Parser
Instantly deconstruct complex URLs into parts: protocol, host, port, path, and queries.
User Agent Parser
Analyze User-Agent strings to detect browser version, operating system, layout engine, and device type.
📝 Text Tools
Text manipulation utilities
Case Converter
Transform text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
Deduplicate Lines
Instantly remove duplicate lines from text lists while preserving their original order.
Fancy Text Generator
Convert normal text into Unicode stylistic variants like bold, cursive, script, and fraktur.
Find & Replace
Advanced text Find & Replace tool with support for Regex, live matching, and capture groups.
Markdown Previewer
Live side-by-side Markdown editor with instant HTML rendering and copy functionality.
Palindrome & Anagram Checker
Detect text palindromes and check if multiple phrases are perfect anagrams instantly.
Remove Line Breaks
Instantly strip all line breaks and hard returns from your text to collapse it into a single paragraph.
Reverse Text
Instantly flip your text backwards. Reverse letter order, flip entire words, or reverse lines.
Text Diff
Compare two text documents side-by-side to highlight additions, deletions, and differences instantly.
Text Repeater
Duplicate any string of text instantly. Set your repetition count and custom separator.
Text Sorter
Instantly organize lists by sorting lines alphabetically, numerically, or by string length.
Text to Slug
Instantly auto-generate clean, SEO-friendly URL slugs by removing spaces and special characters.
Upside Down Text
Instantly flip your text upside down using specialized Unicode character equivalents.
Word & Character Counter
Accurately count words, characters, sentences, paragraphs, and estimate reading time in real-time.
Zalgo Text Generator
Corrupt your text by adding creepy, glitchy Zalgo combining Unicode diacritic marks instantly.
🔀 Converters
Convert between formats
Color Converter
Convert colors precisely between HEX, RGB, HSL, and CMYK formats with our live preview swatch.
Color Palette Generator
Instantly generate harmonious, mathematically precise color schemes from a single seed color.
Contrast Checker
Validate foreground/background color accessibility against strict WCAG AA and AAA standards.
Gradient Maker
Visual CSS gradient builder. Create multi-stop linear, radial, and conic backgrounds instantly.
Number to Words
Instantly spell out numbers into written English text. Perfect for legal documents and writing checks.
Roman Numeral Converter
Instantly convert modern numbers to classic Roman numerals (and vice versa) accurately.
Word to Number
Instantly convert English number words into digits and digits back to written words.
🔐 Cryptography
Hashing and encryption tools
✨ Formatters
Format and beautify data
⚡ Generators
Generate data, IDs, and passwords
Lorem Ipsum Generator
Generate classic Lorem Ipsum placeholder text by paragraphs, sentences, or word count.
Password Generator
Generate cryptographically secure, random passwords locally in your browser.
Placeholder Image Generator
Instantly generate custom SVG placeholder images offline with no external CDN dependency.
ULID Generator
Generate sortable, universally unique identifiers (ULIDs) instantly in your browser.
UUID Generator
Generate cryptographically secure v4 (random) and v7 (timestamp-ordered) UUIDs instantly.
🤖 AI Tools
Use AI models to get stuff done - directly in browser!