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Slugify
Slugify
Turn any string into a clean URL slug: Unicode normalised, diacritics stripped.
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FerrLens: outils côté front (privacy by design) !
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ferrlens-outils-cote-front-privacy-by-design
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The link encodes your inputs in the URL fragment. Nothing is uploaded.
Dev utilities
All tools
Number base converter
Convert between binary, octal, decimal and hex with arbitrary-precision integers.
Card / IBAN validator
Luhn check for credit cards (with issuer detection) and mod-97 check for IBAN.
Text stats
Characters, words, lines, sentences, reading time and approximate LLM token count.
Diff tool
Compare two blobs of text side-by-side or as a unified diff. Whitespace and case toggles.
HTTP status lookup
Search the full list of HTTP status codes: number, reason phrase, category and meaning.
User-Agent parser
Break down a User-Agent string into browser, engine, OS, device and bot heuristics.