Tools→
Free Online Developer Tools
Secure, offline-first browser utilities for developers. Start with a free password generator and Diceware passphrase generator designed for privacy: calculations happen locally, and generated values never leave your device.
Free Password & Passphrase Generator
Generate strong random passwords and Diceware-style passphrases in your browser. Private, offline-first, and powered by the Web Crypto API.
Web Crypto APIDiceware passphraseEditable symbolsCustom word lengths
2026Metadata & Open Graph Tag Generator
Build a complete set of SEO, Open Graph, and Twitter Card meta tags for any page, with a live preview of how the link will unfurl.
Open Graph tagsTwitter CardsJSON-LD outputLive link preview
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