Question 1

What is Base64 encoding?

Accepted Answer

Base64 is a binary-to-text encoding scheme that converts binary data (like images) into a string of ASCII characters. It is widely used to embed images directly in HTML, CSS, or JSON without requiring a separate HTTP request.

Question 2

Is my image data private?

Accepted Answer

Yes. All conversion is performed entirely in your browser using the native FileReader API. Your images are never uploaded to any server.

Question 3

What output formats are supported?

Accepted Answer

Six formats are supported: Data URI (data:image/...;base64,...), Raw Base64 (base64 only), CSS Background (url('...')), HTML img tag, JSON value, and Markdown image syntax.

Question 4

What is the maximum file size?

Accepted Answer

Each image file must be 5 MB or smaller. Base64 encoding increases data size by approximately 33%.

Question 5

Can I convert multiple images at once?

Accepted Answer

Yes. Select multiple files via the file picker or drop zone, or paste multiple image URLs separated by :: or new lines. Files are processed in parallel batches of 5.