Professional Developer Tools

A collection of essential tools for developers. Fast, secure, and works entirely in your browser.

All tools run locally in your browser. No data sent to servers.

Tools designed by developers, for developers. Modern and efficient.

No subscriptions, no limits. Free forever.

Text Processing

Format, validate, and minify JSON data with syntax highlighting

Count words, characters, sentences, and estimate reading time

Convert text between 11 different case styles

Encode and decode Base64 strings with standard and URL-safe variants

Decode and inspect JSON Web Tokens

Generate and validate UUIDs (v4) with batch generation support

Create customizable QR codes for URLs, text, and more

Convert between Unix timestamps, ISO 8601, and human-readable dates

Convert between CSV and JSON formats with custom delimiter support

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes

Check SSL certificate validity and expiration dates

Scan HTTP security headers and get recommendations

Analyze password strength with entropy calculation

Analyze IP addresses with geolocation data

Query DNS records using Google DNS over HTTPS

Test regular expressions with real-time matching