Developer tools
Base64 Encoder / Decoder
Encode text or decode Base64 as UTF-8, entirely in your browser.
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Why use it
Encode and decode Base64 text privately
- 01
UTF-8 text support
Encode and decode non-ASCII text without corrupting Unicode characters.
- 02
Helpful decode errors
Invalid Base64 and byte sequences that are not UTF-8 text are reported clearly.
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Supported files and limits
- Input
- Text or Base64
- Character encoding
- UTF-8
- Privacy
- Processed locally in your browser
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How to use the Base64 converter
- 1
Enter text
Paste the text or Base64 value into the input field.
- 2
Encode or decode
Choose a direction and copy the result.
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Frequently asked questions
Does this support Unicode text?
Yes. Text is encoded and decoded as UTF-8.
Is my input sent to a server?
No. Conversion runs locally in your browser.