DARK
< BACK TO TOOLS
ENCODER / DECODER
BASE64 // HEX // URL // JWT // CLIENT-SIDE ONLY_
PLAIN TEXT / BINARY INPUT
BASE64 OUTPUT
> Also handles Base64 URL-safe variant (- and _ instead of + and /). Paste either format to decode.
PLAIN TEXT INPUT
HEX OUTPUT
> Spaces and colons in hex input are ignored — paste colon-separated formats freely (AA:BB:CC).
PLAIN / DECODED URL
URL-ENCODED OUTPUT
> Full URL encoding via encodeURIComponent. Decodes %xx sequences. Safe for query parameters and payloads.
PASTE JWT TOKEN
> Decodes header and payload. Signature is displayed but NOT verified — this is a decode tool, not a validation tool.
> Check expiry (exp), issued-at (iat), and audience (aud) claims carefully. Never paste production tokens into third-party sites.

> reason42/tools — free, open, no tracking_

∙ cookieless analytics via cloudflare — no cookies, no fingerprinting ∙