Developer Tools

Generate fake credit card numbers for testing

Run JavaScript code online with instant results. Test JS snippets, debug code, and see console output in real-time

Compare and analyze JSON documents with visual diff highlighting. Find added, removed, and modified properties instantly in your browser.

Create short, shareable links from long URLs

Test REST APIs with a user-friendly interface

Encode and decode text using Base64 encoding

Minify and optimize CSS code to reduce file size

Quickly find your public IP address

Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512)

Format and validate JSON data

Decode and verify JSON Web Tokens instantly. View JWT header, payload, and signature. Debug authentication tokens securely in your browser.

Generate secure, random passwords with customizable options

Test and debug regular expressions

Encode and decode URLs with special characters and query parameters

Convert XML data to JSON format with validation and formatting