Developer Tools
Free online developer tools including JSON formatter, Base64 encoder, regex tester, UUID generator, and more. 25 powerful tools for developers.
JSON Formatter
Format, beautify, and validate JSON instantly. Paste raw JSON and get a clean, indented, human-readable output with syntax error detection.
JSON Minifier
Minify and compress JSON by removing whitespace and comments. Reduce JSON payload size instantly for faster API responses and smaller storage footprint.
JSON to CSV Converter
Convert JSON arrays to CSV format instantly. Transform nested JSON data into spreadsheet-ready CSV files with automatic header detection.
JSON to YAML Converter
Convert JSON to YAML format instantly online. Transform JSON config files, API schemas, and data structures into clean, readable YAML syntax.
Base64 Encoder / Decoder
Encode text or decode Base64 strings instantly online. Convert between plain text and Base64 encoding for data URLs, authentication headers, and API tokens.
URL Encoder / Decoder
Encode or decode URLs and query strings instantly. Convert special characters to percent-encoding and back for safe URL transmission and debugging.
HTML Encoder / Decoder
Encode special characters to HTML entities or decode HTML entities back to plain text. Prevent XSS and display HTML code safely in web pages.
UUID Generator
Generate UUID v1, v4, and v5 universally unique identifiers instantly. Create single or bulk UUIDs for databases, APIs, and distributed systems.
Regex Tester
Test and debug regular expressions in real time. Highlights matches, capture groups, and supports JavaScript regex flags for instant pattern validation.
JWT Decoder
Decode and inspect JSON Web Tokens (JWTs) instantly. View header, payload, and signature without a secret key. Debug authentication tokens safely.
Hash Generator
Generate cryptographic hashes for any text using MD5, SHA-1, SHA-256, SHA-512, and more. Verify data integrity and create checksums instantly online.
HTML to Markdown Converter
Convert HTML to clean Markdown syntax instantly. Transform web content, blog posts, and documentation from HTML tags to readable Markdown format.
Markdown to HTML Converter
Convert Markdown to HTML instantly online. Transform README files, blog posts, and documentation written in Markdown into clean HTML output.
CSS Minifier
Minify and compress CSS code instantly online. Remove whitespace, comments, and redundant code to reduce CSS file size and improve page load speed.
JavaScript Minifier
Minify and compress JavaScript code online. Remove whitespace, comments, and shorten variable names to reduce JS bundle size and improve load time.
HTML Minifier
Minify HTML by removing whitespace, comments, and optional tags. Reduce HTML document size to improve page load speed and server response times.
SQL Formatter
Format and beautify SQL queries instantly online. Clean up minified or messy SQL with proper indentation, keyword capitalisation, and clause alignment.
XML Formatter
Format and beautify XML documents instantly online. Validate XML structure, add proper indentation, and make raw XML human-readable with one click.
Cron Expression Generator
Generate and explain cron expressions with a visual builder. Create cron job schedules for Linux, AWS EventBridge, GitHub Actions, and more.
Color Converter
Convert colors between HEX, RGB, RGBA, HSL, HSLA, and HSV formats instantly. Pick colors visually and get all format values at once for CSS and design work.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds timestamps with timezone conversion for debugging and development.
IP Address Lookup
Look up any IP address to find its geolocation, ISP, country, city, and timezone. Instantly check your own IP or investigate any public IP address.
HTTP Status Codes
Complete HTTP status code reference with explanations, use cases, and examples. Look up any HTTP response code from 1xx informational to 5xx server errors.
Diff Checker
Compare two texts or code files side by side and highlight differences. Find added, removed, and changed lines instantly with colour-coded diff output.
Code Beautifier
Beautify and format code in JavaScript, TypeScript, HTML, CSS, JSON, and more. Auto-indent and clean up messy code with configurable style options.