Base64 Encoder/Decoder
Encode text to Base64 and decode it back.
Processed locally in your browser — your files never leave your device.
How to use
- 1Paste text (to encode) or Base64 (to decode).
- 2Click Encode or Decode.
- 3Copy or download the result.
Unicode-safe Base64 encoding and decoding. Strict validation rejects malformed input with a clear message instead of garbage output.
Frequently asked questions
Does it handle non-English text?
Yes. Text is encoded as UTF-8 first, so emoji and Arabic/French text round-trip correctly.
Is my data uploaded?
No. Everything happens entirely in your browser.