Base64 Decoder
Decode Base64 strings back to readable UTF-8 text in your browser. Friendly error messages for invalid input.
Processed in your browser · No upload
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Decoding runs in your browser. Your Base64 input is never uploaded.
FAQ
- What happens if my input is not valid Base64?
- You will see a clear error message instead of a crash. Fix the input and try again.
- Does it support Unicode?
- Yes. The decoder treats input as UTF-8 so emoji and non-ASCII characters round-trip correctly.
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