Base64 ↔ File

Convert files to Base64 and back

About this tool

Convert files to Base64 and Base64 back to a file. It's useful for embedding images and files directly in HTML, CSS, JSON or emails, without needing an external link.

Pick a file to generate the Base64 string, or paste a string to download the matching file. Processing happens in the browser.

How to use

Select a file to convert it to Base64, or paste a Base64 string.
Copy the generated string or download the resulting file.

Frequently asked questions

Which file types work?

Any file: images, PDFs, fonts and other binaries.

Are files sent to servers?

No, the conversion is done locally in your browser.

Does Base64 increase the size?

Yes, about 33% larger than the original; that's the cost of representing binary as text.