Developer tool
Encode or Decode Base64 Text
Encode UTF-8 text as Base64 or decode Base64 back to readable text with local validation.
Runs locally in your browser
Your text is not uploaded.
Simple steps
How it works
- 01
Enter text or a Base64 value.
- 02
Choose Encode or Decode.
- 03
Copy the converted result.
Good to know
Frequently asked questions
Does Base64 encrypt data?
No. Base64 is an encoding format, not encryption or access control.
Is Unicode text supported?
Yes. Text is encoded as UTF-8 before conversion.
What happens with malformed Base64?
The tool reports invalid encoding instead of returning a partial result.
Does the conversion use a server?
No. Encoding and decoding happen locally in your browser.
Can I encode files here?
This tool converts text only. Use Image to Base64 for image data URLs.