zxcvbn

Tech stack & purpose

Zxcvbn-ts is a TypeScript rewrite of the original zxcvbn password strength estimator that evaluates password security through pattern matching and dictionary lookups. The library analyzes passwords against multiple dictionaries (common words, language-specific vocabularies, and user-provided inputs), detects keyboard patterns and variations through Levenshtein distance calculation, and optionally cross-references passwords against known breached password databases via the Pwned Matcher. Built with TypeScript and distributed as modular npm packages, zxcvbn-ts supports integration into Vue, Nuxt, React, Angular, and Fastify applications, with language packages available for English, German, and common terms, and performs password analysis efficiently even with large dictionaries of over 100,000 words.

Community & reference links

• Leet speak

Languages

Contributors (top 30 of 89)

• MrWook450 commits
• Dan Wheeler324 commits
• Andrew Burdo6 commits
• mimi899995 commits
• studds4 commits
• Nathan Malkin4 commits
• Antoine Grondin3 commits
• Luis Miranda3 commits
• Tom Sommer3 commits
• gabberr3 commits
• Allan Lewis3 commits
• Sam2 commits
• Caleb McQuillin2 commits
• Max Isom2 commits
• Giovanni Bajo2 commits
• Hannes Rüger2 commits
• Zach2 commits
• Rohit Jha2 commits
• Daniel Wolf2 commits
• Bagas Wastu2 commits
• mrsendova2 commits
• Harrison Pinto2 commits
• Zlatan Vasović2 commits
• Rian Hunter2 commits
• Eric Demers1 commits
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  Oskar1 commits · 7 followers
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  Nathan Rebours1 commits · 121 followers
• Stoney Shou1 commits
• Michael Berezovsky1 commits
• Martin Trobäck1 commits