Base64 & JWT Inspector
POPULARDecode and encode Base64 strings, images, and inspect JSON Web Token (JWT) payloads.
4.9
rating
310K users
Instant
Developer utility for Base64 encoding/decoding text and files, along with JWT token parsing to inspect headers, claims, and expiration timestamps.
How to use
- 1 Choose Base64 mode to encode or decode text strings and files.
- 2 Switch to JWT Decoder tab and paste your JWT bearer token.
- 3 View parsed Header, Payload claims, and human-readable Expiration timestamp.
Features
- JWT token expiration status badge (Valid vs Expired).
- UTF-8 safe Base64 encoding and decoding.
- Base64 Data URI generator for images.
Benefits
- Debug OAuth and Auth0 tokens easily.
- Embed small images as Base64 inline strings in CSS or HTML.
Frequently asked questions
Does the JWT decoder verify signatures?
The decoder parses header and payload client-side for inspection without requiring secret keys.
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