Developer Tools
Small sharp utilities for developers - test regex, generate UUIDs and passwords, hash data, convert timestamps. No accounts, no tracking.
Password Generator
Generate strong random passwords with Web Crypto - length, character sets, entropy meter.
Regex Tester
Test regular expressions live with match highlighting, capture groups and a cheatsheet.
UUID Generator
Generate bulk v4 UUIDs with Web Crypto - uppercase/lowercase, hyphens on/off, copy all.
Hash Generator
Hash text or files with MD5, SHA-1, SHA-256, SHA-384, SHA-512 - in your browser.
Timestamp Converter
Convert Unix timestamps (seconds/ms auto-detect) to dates and back, UTC/local, relative time.
Markdown Previewer
Write Markdown and see a live preview side by side, with safe rendering in your browser.
Meta Tag Generator
Generate SEO meta tags, Open Graph and Twitter Card markup from a simple form, with a live Google SERP preview and character counters.
Developer Tools FAQs
- Yes - all developer tools are completely free with no sign-up and no usage limits.
- Yes. Both use the Web Crypto API (crypto.getRandomValues / crypto.randomUUID), the browser's secure random source - never Math.random().
- Password Generator, Regex Tester, UUID Generator, Hash Generator and Timestamp Converter.
- No. Hashing, generation and testing all happen locally in your browser.