Developer Tools
40 free developer utilities. Format, convert, encode, and debug code.
JSON Formatter
Format and validate JSON data
JSON Visualizer
Visualize JSON as interactive tree
JSON CSV Converter
Convert between JSON and CSV
JSON to TypeScript
Convert JSON objects into TypeScript interfaces
CSS Grid Generator
Visual CSS grid layout builder
CSS Minifier
Minify and beautify CSS code
CSS Validator
Validate CSS syntax
Tailwind to CSS
Convert Tailwind classes to standard CSS
HTML Beautifier
Format HTML with proper indentation
HTML Encoder Decoder
Encode/decode HTML entities
HTML to Markdown
Convert HTML to clean Markdown
Markdown Preview
Preview markdown in real-time
Markdown to HTML
Convert Markdown to formatted HTML
SQL Formatter
Format SQL queries beautifully
Regex Tester
Test regular expressions live
Base64 Encoder
Encode/decode Base64 strings
JWT Decoder
Decode and inspect JWT tokens
URL Encoder Decoder
Encode/decode URLs
htaccess Generator
Generate Apache htaccess rules
Nginx Config Generator
Generate Nginx server configs
Gitignore Generator
Generate .gitignore files for any project
Git Commit Generator
Generate conventional commits
Cron Expression Generator
Build cron expressions visually
Timestamp Converter
Convert Unix timestamps
Unix Timestamp Converter
Convert between dates and epoch timestamps
UUID Generator
Generate random UUID/GUID identifiers
Diff Checker
Compare text differences
Binary Converter
Convert text to/from binary
ASCII Converter
Convert text to ASCII codes and back
Number Base Converter
Convert between number bases
SVG to React
Convert SVG files to clean JSX/React components
Keyboard Event Tester
Test JavaScript keyboard events and keyCodes
Core Web Vitals Checker
Check Core Web Vitals scores
Lighthouse Score Estimator
Estimate Lighthouse scores
Meta Tags Debugger
Debug and preview meta tags
Structured Data Generator
Generate Schema.org JSON-LD
Responsive Breakpoint Tester
Test responsive breakpoints
API Rate Limit Calculator
Calculate optimal API request rates
Env Validator
Validate .env files for issues
Database Schema Visualizer
Visualize SQL database schemas