Security · Encoding
Crypto & Encoding Kit
Inspect tokens and transform data without pasting secrets into a stranger's server. Everything here runs through the browser's native Web Crypto and text APIs — fully offline.
⚠ Decoding only — this does not verify the signature (that needs the secret/key). Never paste production tokens you don't control; though this page is offline, treat tokens as live credentials.
Computed with SubtleCrypto.digest. MD5 and SHA-1 are intentionally omitted — they're cryptographically broken and shouldn't be used for new work.
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