Image to Base64 Converter
Turn an image into a Base64 data URI with ready and CSS snippets, or paste Base64 to preview and download the image.
About Image to Base64 Converter
This image to Base64 converter online turns a PNG, JPG, SVG or other image into a Base64 string and a ready data URI. Copy the raw Base64, the full data URI, an HTML img tag or a CSS background snippet, whichever your code needs. It is handy for embedding small icons in HTML, CSS, emails or JSON.
It also works the other way as a Base64 decoder: paste a Base64 string or data URI, preview the image and download it as a file. Everything happens in your browser, so your images and data are never uploaded, and the tool is free with no sign-up.
How to use Image to Base64 Converter
- Drop an image (or try the sample) on the Image → Base64 tab.
- Copy the data URI, raw Base64, <img> tag or CSS snippet.
- To decode, switch tabs and paste a Base64 string or data URI.
- Preview it and download the image file.
Frequently asked questions
Why is Base64 bigger than the file?
Base64 encodes every 3 bytes as 4 text characters, so it is about 33% larger. Use it for small icons and email templates, not large photos.
Can I paste Base64 without the data: prefix?
Yes. The decoder detects PNG, JPG, GIF, WebP and SVG from the first bytes.
How do I convert an image to Base64?
Drop the image on the Image to Base64 tab. The data URI and raw Base64 appear instantly, ready to copy.
How do I decode Base64 back to an image?
Switch to the Base64 to Image tab, paste the string or data URI, check the preview and click download to save the image file.
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