Free developer tools, all in one place
A fast set of developer utilities that run entirely in your browser — no signup, no uploads, no limits. Base64 encodes and decodes text, URL Encode handles percent-encoding, the Hash generator creates MD5, SHA-1, SHA-256 and SHA-512 digests using your browser's built-in Web Crypto, UUID generates v4 identifiers, the JWT Decoder reveals a token's header and payload, and the Timestamp converter switches between Unix epoch and human dates.
Are these tools free and private?
Yes — completely free with no signup, and everything is computed locally on your device, so your data is never sent anywhere.
Does the JWT decoder verify the signature?
No — it decodes the header and payload for inspection only. It does not validate the signature.