Free Developer Tools
Free online developer tools including code formatters, data converters, encoders, decoders, and generators. All tools run entirely in-browser for maximum privacy and speed. No sign-up required, 100% private.
Code Formatters
JSON Formatter
Format, validate, and beautify JSON data. Supports minification and syntax highlighting.
HTML Formatter
Format, beautify, and minify HTML code. Fix indentation and improve code readability.
CSS Formatter
Format, beautify, and minify CSS code. Organize properties and improve readability.
JavaScript Formatter
Format, beautify, and minify JavaScript code. Fix indentation and add proper spacing.
SQL Formatter
Format and beautify SQL queries. Support for MySQL, PostgreSQL, SQLite, and more.
XML Formatter
Format, beautify, and minify XML code. Validate syntax and improve readability.
TypeScript Formatter
Format and beautify TypeScript code using Prettier. Customize indentation and style.
Developer Tools
Regex Tester
Test and debug regular expressions with real-time match highlighting and capture groups.
UUID Generator
Generate unique UUIDs (v4) instantly. Bulk generation and one-click copy supported.
JWT Decoder
Decode and inspect JWT tokens. View header, payload, and check expiration status.
CRON Expression Parser
Parse and validate CRON expressions. See when your scheduled tasks will run next.
Slug Generator
Generate URL-friendly slugs from text. Supports transliteration and custom separators.
Converters
YAML to JSON Converter
Convert YAML to JSON format. Perfect for config files, Docker Compose, and Kubernetes.
JSON to YAML Converter
Convert JSON to YAML format. Create readable config files for Docker and Kubernetes.
URL Encoder/Decoder
Encode and decode URLs for safe transmission. Handle special characters.
HTML Entity Encoder
Encode and decode HTML entities. Convert special characters to safe HTML entities.
JSON to CSV Converter
Convert JSON data to CSV format. Handles nested objects and arrays.
CSV to JSON Converter
Convert CSV data to JSON objects. Supports custom delimiters and type inference.
JSON to TypeScript
Convert JSON data to TypeScript interfaces or types automatically.
Text Tools
Lorem Ipsum Generator
Generate placeholder text for your designs. Choose words, sentences, or paragraphs.
Word Counter
Count words, characters, sentences, and paragraphs. Includes reading time.
Case Converter
Convert text between uppercase, lowercase, title case, and sentence case.
Markdown Preview
Live preview your Markdown with GFM support. See formatted output as you type.
Diff Checker
Compare two texts and highlight differences. Find additions and deletions.
Generators
Sitemap Generator
Generate valid XML sitemaps for your website. Set priority and frequency.
Favicon Generator
Generate favicons for all platforms from a single image. iOS and Android support.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Base64 Encoder/Decoder
Encode and decode Base64 strings instantly. Supports text and file encoding.
Image Tools
Background Remover
Remove backgrounds from images instantly using AI. Runs locally in your browser.
Image Compressor
Compress images without losing quality. Supports JPEG, PNG, and WebP.
Image Resizer
Resize images to exact dimensions or scale by percentage.
Image to Base64
Convert images to Base64 encoded strings for embedding in CSS or HTML.
CSS Tools
CSS Unit Converter
Convert between PX, REM, EM, PT, and viewport units with Tailwind reference.
Color Palette Generator
Generate beautiful color palettes. Export to CSS, Tailwind, or Hex code.
Shadow Generator
Create custom CSS box shadows with live preview and Tailwind export.
Gradient Generator
Build beautiful CSS gradients with an intuitive interface.
SEO Tools
Meta Tag Analyzer
Analyze meta tags for SEO. Check Open Graph, Twitter Cards, and meta data.
Twitter/X Card Validator
Preview how your links appear on Twitter/X. Validate meta tags and images.
Robots.txt Generator
Create and validate robots.txt files to control search engine crawlers.
Keyword Density Checker
Analyze content for keyword frequency and optimize for SEO.