Paste a Base64 string. The tool decodes to UTF-8 text.
Base64
Text
How it works
Whitespace is stripped, then bytes are decoded and interpreted as UTF-8.
Padding is optional; standard Base64 alphabet is supported.
Use cases
Inspect API tokens, debug data URLs, or reverse quick encodings.
Not encryption
Decoding reveals the original bytes. Treat decoded content like any sensitive text.
Common questions
- Why does decoding fail?
- Wrong alphabet, missing padding, or invalid byte sequences for UTF-8.
- Binary output?
- This tool shows UTF-8 text. For arbitrary binary, use a hex or file workflow.
- URL-safe Base64?
- Standard and URL-safe variants (hyphen and underscore forms) are accepted after normalization.
- Data sent to a server?
- No. Everything runs locally.