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Base64 Encoder
Encode text to Base64 or decode Base64 back to plain text. Upload files to get their Base64 representation.
Examples
See what this tool can do.
Embed an image in CSS
Encode a small icon to Base64 to inline it as a data URI.
Decode a token payload
Decode a Base64 string to read its contents.
Tips & tricks
Get the most out of it.
- 1Base64 is encoding, not encryption — it does not protect data.
- 2Use it to inline small assets or move binary data as text.
- 3Unicode text is handled correctly, including emoji.
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About Base64 Encoder
What this tool does
Base64 Encoder encodes text to Base64 and decodes it back, and can also turn an uploaded file into a Base64 string.
How to use it
- Enter text or upload a file.
- Choose Encode or Decode.
- Copy the result.
How it works
Text is converted using the browser's built-in Base64 functions with correct Unicode handling; files are read locally and encoded to a data string.
Important considerations
- Very large files produce very long strings and use more memory.
Privacy
This tool runs entirely in your browser. Nothing you enter is uploaded to a server.
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Frequently asked questions
No. It only re-encodes data as text; anyone can decode it. Never use it to hide secrets.