JWT Decoder
Decode and inspect JWT tokens — header, payload, and signature — without verification.
Header
Payload
Signature
Token info
Frequently Asked Questions
What is jwt encoding?
JWT encoding is a method of representing binary or text data in an alternative format to ensure safe transmission over systems that may not support raw binary. It is widely used in HTTP headers, URLs, email attachments, and API payloads.
How do I token using JWT Decoder?
Paste your input into the text area and select the desired operation — encoded or decoded output appears instantly. You can also upload a file to process its binary contents directly.
Is jwt the same as encryption?
No. JWT encoding is a reversible representation format with no secret key — anyone can decode it. Encryption requires a key and is designed to keep data confidential from unauthorised parties.
What characters are supported?
The tool supports the full Unicode character set for text input and handles arbitrary binary data for file-based operations. There are no restrictions on the input character range.
Can I jwt files?
Yes. You can drag and drop or select a file to encode its contents. The output is displayed inline and can be copied or downloaded as a text file for use in other applications.