Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to text, privately in your browser. Free with no upload.
Base64 encoder and decoder
Encode text to Base64 or decode Base64 strings back to readable text, with full Unicode/UTF-8 support. Useful for data URIs, tokens, email attachments and debugging. Runs entirely in your browser.
How to encode or decode Base64 online
- Paste your text or Base64 string into the box.
- Choose Encode or Decode.
- The result is generated instantly in your browser.
- Copy the output. Nothing is uploaded to a server.
Frequently asked questions
Is my data uploaded to encode Base64?
No. Encoding and decoding run in your browser, so your data stays private.
Can I decode Base64 back to text?
Yes. Paste a Base64 string, choose Decode, and get the original text.
Does it handle Unicode text?
Yes. Text is handled as UTF-8 so accented and non-Latin characters work.
Is it free?
Yes. The tool is completely free with no sign-up.