Developer & API
28 All Tools
API / REST Client
Send GET/POST/PUT/DELETE requests to any REST API and inspect the response.
Webhook Tester
Get a unique URL and inspect incoming webhook requests live.
JWT Decoder & Verifier
Decode JWT header/payload and verify the HS256 signature.
JWT Generator
Create an HS256 JWT from a payload and secret.
Regex Tester
Test regular expressions live with match highlighting.
Cron Expression Parser
Explain a cron expression and show next run times.
UUID / ULID Generator
Generate UUID v4 and ULID in bulk.
JSON ↔ YAML Converter
Convert between JSON and YAML.
JSON to TypeScript
Generate TypeScript interfaces from JSON.
SQL Formatter
Beautify and format SQL queries.
HTTP Status Codes
Look up the meaning of any HTTP status code.
MIME Type Lookup
Find the MIME type for any file extension.
User Agent Parser
Parse browser, OS and device from a User-Agent string.
What Is My IP
See your public IP address and request headers.
DNS Lookup
Look up A, MX, TXT, NS and CNAME records for a domain.
HTML Minifier
Minify HTML to reduce size.
CSS Minifier
Minify CSS code.
JavaScript Minifier
Minify JavaScript code.
Code Beautifier
Beautify HTML, CSS and JS code.
Slug Generator
Convert text into a URL-friendly slug.
String Escaper
Escape strings for JSON, JS, SQL or HTML.
Chmod Calculator
Calculate Linux file permissions (755, 644).
Color Converter
Convert colors between HEX, RGB and HSL.
Number Base Converter
Convert binary, octal, decimal and hex.
Meta Tag Generator
Generate SEO title, description and OG meta tags.
Robots.txt Generator
Build a robots.txt file easily.
.htaccess Redirect Generator
Generate 301/302 redirect rules.
Text to Binary/ASCII
Convert text to binary, ASCII or hex.