Convert image to Base64 online
Upload one or several images and get their Base64 code ready to use in HTML, CSS or your code. Everything runs in your browser: no image is uploaded to any server.
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Frequently asked questions about Base64
What is Base64 and what is it used for?
Base64 is an encoding system that converts binary data (like an image) into a text string. It's used to embed images directly into HTML or CSS without external files, which is useful for icons, small logos or assets you want to bundle in a single file.
Does Base64 increase file size?
Yes. Converting an image to Base64 increases data size by roughly 33%. That's why it's recommended only for small images (icons, logos), not for large photos.
Is it safe to convert images here?
Completely. This tool runs 100% in your browser: the image is never uploaded to any server, so no one else can see it. You can even use it offline once the page is loaded.
What image formats can I convert to Base64?
You can convert PNG, JPG, JPEG, GIF, WebP, BMP, SVG and most image formats your browser can open. The result will be the Base64 code corresponding to the original image format.
How many images can I convert at once?
No limit. You can drag multiple images at once and get each one's Base64 code separately, with buttons to copy or download each result individually.