Base64 Decoder
Decode Base64 back to readable text instantly, right in your browser.
🔒 Processed locally in your browser
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How to use
- Paste the Base64 string you want to decode into the input box.
- The decoded text appears instantly below.
- Use Copy to copy the result, or Reset to clear the input.
Features
- Instant, live Base64 decoding as you type
- Correctly handles Unicode text, including emoji and non-Latin scripts
- Clear error message for invalid Base64 input
- 100% client-side — your data never leaves your browser
Frequently asked questions
Does my data get uploaded anywhere?
No. Base64 Decoder runs entirely in your browser — your data is never sent to a server.
What happens if I paste invalid Base64?
You'll see a clear error message letting you know the input isn't valid Base64, instead of garbled output.
Does it work with non-English text and emoji?
Yes. The decoded bytes are interpreted as UTF-8, so Unicode text, emoji and non-Latin scripts are all decoded correctly.