Encode and decode Base64

Convert text and files to standard or URL-safe Base64, recover UTF-8 text and rebuild files without sending them to a server.

✓Local processing in this tool

Variant

Text or Base64 input

Result

File → Base64

Up to 25 MB to display the result as text.

Choose file

Include Data URI prefix

Output filename

MIME

Uses TextEncoder and TextDecoder to handle Unicode text correctly.

↔

Encodes and decodes text, supports URL-safe Base64, Data URI and file conversion.

□

The entered content is not sent.

Base64 is a textual representation of binary data. It is not encryption and provides no confidentiality: anyone with the content can decode it.

Does Base64 encrypt text?

No. It only changes how the content is represented.