What is Base64 encoding?

Base64 encodes binary data as ASCII text, commonly used in data URIs and email attachments.

Can I encode images to Base64?

Yes, upload an image to get its Base64 data URI for use in HTML/CSS.

No. Base64 is encoding, not encryption. It provides no security.

Yes, Base64 encoding increases size by approximately 33%.

A-Z, a-z, 0-9, +, / and = for padding.

free

Encode and decode Base64 strings online. Also supports file to Base64 encoding for data URIs.

Plain text

📎 Encode a file

Base64 output

Select Encode or Decode.

Type or paste text, or upload a file for encoding.

The Base64 result appears instantly. Click Copy to clipboard.

Format, validate, and minify JSON data online. Syntax highlighting, error detection, and tree view.