Developer Tools

Format, convert and minify code; colours and CSS generators.

AI Prompt Optimizer Enhance basic prompts into structured, high-detail prompts for ChatGPT, Claude, and Midjourney. Aspect Ratio & Resolution Calculator Calculate 16:9, 9:16, 4:5, and custom image/video dimensions with visual aspect ratio preview. Bcrypt Password Hash Generator Generate and verify salted Bcrypt and Argon2 password hashes directly in your browser. Chmod Calculator Work out Linux file permissions (755, 644…). Color Contrast Checker Check text and background contrast against WCAG. Color Palette Generator Make tints and shades from one base colour. Color Picker Pick a colour and copy its HEX, RGB and HSL codes. CRON Expression Parser Explain a cron schedule in plain English. CSS Beautifier Indent and tidy up CSS code. CSS Border Radius Generator Create rounded corners with live CSS code. CSS Box Shadow Generator Generate CSS box-shadow code with a live preview. CSS Flexbox Playground Visually build, align, and distribute CSS Flexbox and Grid layouts with live code generation. CSS Glassmorphism Generator Design modern frosted glass UI elements with real-time blur, border, transparency sliders, and instant CSS copy. CSS Gradient Generator Create linear and radial CSS gradients. CSS Minifier Make CSS smaller by removing spaces and comments. CSV to JSON Converter Turn CSV rows into JSON. cURL to Python, JS & Node Converter Convert raw cURL commands from DevTools into Python requests, JavaScript fetch, Axios, and PHP code. Docker Run to Docker Compose Converter Convert any docker run command into a clean, ready-to-use docker-compose.yml configuration file instantly. Dummy Credit Card Generator (Luhn Test Cards) Generate valid Luhn-compliant test credit card numbers for Visa, Mastercard, and RuPay for payment gateway testing. HEX to RGB Converter Convert HEX colour codes to RGB and HSL. HTML Beautifier Indent and tidy up HTML code. HTML Minifier Make HTML smaller by removing spaces and comments. JavaScript Beautifier Indent and tidy up JavaScript code. JavaScript Minifier Make JavaScript smaller (safe minify with Terser). JSON Diff & Compare Tool Side-by-side comparison of two JSON payloads with added, modified, and removed key difference highlighting. JSON Formatter & Validator Format, validate and minify JSON in your browser. JSON Minifier Remove all spaces from JSON. JSON to CSV Converter Turn a JSON array into a CSV / Excel table. JSON to TypeScript Converter Convert raw JSON into strongly-typed TypeScript interfaces and Zod validation schemas. JSON to YAML Converter Convert JSON to YAML. JWT Decoder Read the header and payload of a JSON Web Token. Markdown to HTML Converter Convert Markdown to HTML with a live preview. MD5 / SHA Hash Generator Create MD5, SHA-1, SHA-256 and SHA-512 hashes. PX to REM & Tailwind CSS Converter Convert pixel values to root EM (rem) and view instant CSS and Tailwind utility class sizing references. Regex Tester Test a regular expression and see every match. RGB to HEX Converter Convert RGB values to a HEX colour code. RSA Key Pair Generator (PEM) Generate 1024-bit, 2048-bit, or 4096-bit RSA Public and Private Key pairs in standard PEM format 100% privately in your browser. SQL Formatter Make SQL queries easy to read. SQL Minifier Put a SQL query on one compact line. SVG to JSX React Converter Convert raw SVG markup into clean, production-ready React JSX components or Tailwind data-URIs. UNIX Timestamp Converter Convert UNIX timestamps to dates and back. UUID / GUID Generator Generate random v4 UUIDs in bulk. XML Formatter Format and validate XML. XML Minifier Remove spaces and comments from XML. XML to JSON Converter Convert XML documents to JSON. YAML Formatter & Validator Check YAML for errors and format it neatly. YAML to JSON Converter Convert YAML to JSON and check it for errors.