Does the Base64 tool upload my text?
No. Encoding and decoding happen locally in your browser, and your input is not uploaded.
Your text stays in your browser. Nothing is uploaded.
Base64 Encoder / Decoder
Encode readable text to Base64 or decode Base64 back into UTF-8 text without sending your input anywhere.
Your text stays in your browser. Nothing is uploaded.
Encode or decode Base64
Private Base64 conversion for quick checks
Use this Base64 encoder and decoder for snippets, configuration values, short payloads, test strings, and everyday troubleshooting when you need a fast local conversion.
The tool handles Unicode text through UTF-8 and reports invalid decode input clearly. Everything runs in your browser, so your text is not uploaded.
How to use this tool
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Choose encode or decode
Select whether you want to turn text into Base64 or convert Base64 back into readable text.
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Enter your input
Paste plain text, Unicode text, or a Base64 string into the input box.
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Copy the result
Review the live output and copy the converted result when it looks right.
FAQ
Does this support Unicode text?
Yes. The Base64 conversion uses UTF-8 encoding, so emoji and non-ASCII characters are handled safely.
What happens if the Base64 input is invalid?
The tool shows an error message instead of crashing, so you can fix the input and try again.
Is Base64 encryption?
No. Base64 is an encoding format, not encryption. Anyone can decode it if they have the encoded text.