Encoder / Decoder
Encode and decode Base64, URL, HTML entities, Hex, JWT and Unicode.
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Output
Free · No account · Open source friendly
6 formats
Base64, URL, HTML, Hex, JWT, Unicode.
Encode & decode
Switch direction anytime.
JWT decoder
Inspect header and payload instantly.
Instant
No submit — paste and click.
Frequently asked questions
What is Base64 used for?▼
Encoding binary data (images, files) as text — used in emails, data URIs, and APIs.
Can I decode JWT tokens safely?▼
Yes — we only decode the header and payload. The signature is shown but not verified here.
Is URL encoding the same as percent encoding?▼
Yes — URL encoding (also called percent encoding) replaces special characters with %XX sequences.
What is Unicode encoding?▼
It converts characters to \uXXXX sequences — useful for escaping special characters in source code.