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Hash Compare — Compare & Verify Hashes

Compare two hashes or verify text against a hash — safely, right on your device.

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JWT Decoder Decode the header and payload of a JSON Web Token. Warns about expiration. Does not verify the signature (offline). JWT Verify (HS256) Verify a JWT's HMAC-SHA256 signature using your secret — locally, so the secret never leaves your browser. JWT Builder (HS256) Create and sign a JWT with HMAC-SHA256 — handy for generating test tokens. Signing happens locally. Hash (SHA) Compute SHA-1/256/384/512 hashes using the Web Crypto API, entirely on your device. Base64 Encode/Decode Encode/decode Base64 with full UTF-8 support (works correctly with any language). Password / Token Generate strong passwords and secret tokens (API keys, NEWS_INGEST_TOKEN, etc.) using secure crypto — nothing leaves your browser.
🔒 Hash Compare — Compare & Verify Hashes runs entirely in your browser — the data you enter is not sent to any server. Free, no sign-up required. See145 free dev tools more.