Developer Tools
A fast collection of developer utilities: format and validate JSON, encode and decode Base64 and URLs, decode JWTs, generate UUIDs and hashes, convert timestamps, test regular expressions, and more. Client-side and private.
JSON Formatter & Validator
Beautify, minify and validate JSON.
JSON ⇄ CSV Converter
Convert between JSON and CSV both ways.
CSV to JSON Converter
Turn CSV rows into clean JSON.
Base64 Encoder & Decoder
Encode and decode Base64 instantly.
URL Encoder & Decoder
Percent-encode and decode URLs.
JWT Decoder
Decode JWT header and payload claims.
User Agent Parser
See what is my user agent — or parse any UA string.
What Is My IP Address?
See your public IP, location and ISP instantly.
UUID Generator
Generate UUID v4, v7 and NanoIDs in bulk.
Hash Generator
Generate SHA hashes from any text.
HTML Minifier
Strip whitespace and comments from HTML.
SQL Formatter
Beautify and indent SQL queries.
Unix Timestamp Converter
Convert epoch timestamps to dates and back.
Regex Tester
Test regex with live match highlighting.
Color Converter
Convert HEX, RGB and HSL with live preview.
PX to REM Converter
Convert pixels and rem with a custom root size.
JSON ⇄ YAML Converter
Convert between JSON and YAML both ways.
JSON ⇄ XML Converter
Convert between JSON and XML both ways.
CSV ⇄ Markdown Table Converter
Turn CSV into Markdown tables and back.
JWT Encoder
Sign JWTs with an HMAC secret.
Cron Expression Generator
Build crontab schedules and preview next runs.
Redirect Generator
Build .htaccess and Nginx redirect rules.
Diff Checker
Compare two texts line by line.
Markdown to HTML
Convert Markdown to HTML with live preview.
HTML to JSX Converter
Convert HTML markup into React JSX.
CSS Minifier & Beautifier
Minify or beautify CSS instantly.
JavaScript Minifier
Shrink JavaScript with real AST-based minification.
Number Base Converter
Convert binary, octal, decimal and hex.
Mock Data Generator
Generate fake JSON or CSV test data.
htpasswd Generator
Create Apache .htpasswd entries with bcrypt or SHA-1.
.env.example Generator
Strip secrets to build a .env.example.
ZIP Extractor
View and extract files from a .zip archive in your browser.