Image to Base64 Converter
Encode any image as a Base64 data URI for embedding in code.
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About this tool
Image to Base64 Converter encodes your image as a Base64 data URI — a long text string you can paste directly into HTML, CSS, or JSON to embed the image without a separate file. Developers use this for small icons, email templates, and single-file demos.
Be aware that Base64 inflates size by about 33%, so it suits small images best; large photos are better kept as files. Encoding happens locally, and you can copy the result or download it as a .txt file.
How to use
- Upload an image (small files work best).
- The Base64 data URI appears in the text area automatically.
- Copy it with one click or download it as a .txt file.
- Paste it into your HTML, CSS, or code wherever an image URL goes.
Frequently asked questions
It is a way to inline file content as text, like data:image/png;base64,iVBOR... Browsers decode it back into the image, so no separate file request is needed.
Base64 represents every 3 bytes as 4 characters, adding roughly 33% overhead. That is the price of embedding binary data as text.
Files up to 25 MB are accepted, but Base64-encoding huge images produces enormous strings that can freeze editors — stick to small assets.
No. Encoding runs entirely in your browser.