Image to Base64 - Free Offline Converter (No Upload)

Convert images to Base64 string in your browser. 100% offline - no upload, no account, no data sent to any server. Free.

No Upload 100% Private Free
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Drop your image here

Any image format: PNG, JPG, WebP, GIF, SVG...

Frequently asked questions

What is Base64 encoding used for?

Embedding images directly in HTML/CSS (data URLs), JSON APIs, or email bodies without needing separate file references.

Is this tool really offline?

Yes. FileReader API converts locally. Nothing is uploaded to any server.

What is the difference between Base64 and Data URL?

Data URL includes the MIME type prefix: data:image/png;base64,.... Base64 is just the encoded string without prefix.