Base64 Encoder / Decoder
Encode and decode Base64 strings with full UTF-8 support. Runs entirely in your browser (encoding only, not encryption).
Note: Base64 is an encoding format for transport compatibility, not a security or encryption mechanism.
Plain Text
Input: 0 chars, 0 bytes
Base64 Output
Result will appear here...
Output: 0 chars, 0 bytes
How To Use
- Choose Encode to convert plain text to Base64, or Decode to restore plain text.
- Paste your value into the input field and click the main action button.
- Copy the result and use it in API payloads, headers, or debug workflows.
Common Use Cases
- Encoding binary-like text payloads for JSON transport.
- Inspecting encoded data from browser storage or API responses.
- Debugging UTF-8 conversion issues in cross-platform integrations.
How To Use & FAQ
Q: Does this support Unicode text like Korean or emoji?
A: Yes. The tool uses UTF-8-safe encoding and decoding through TextEncoder/TextDecoder.
Q: Why do I get an invalid Base64 error?
A: The input is not valid Base64 or contains damaged characters such as missing padding.
Q: Is Base64 the same as encryption?
A: No. Anyone can decode Base64 back to plain text. Use real cryptography for confidentiality.
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