Image to Base64
Convert any image into a Base64 string for inline embedding.
What is image to Base64?
Base64 turns an image into a long string of letters and numbers that can be embedded directly inside HTML or CSS. Instead of pointing to a file URL, the image lives inline as text. Browsers decode it back into pixels on the fly.
Why embed images as Base64?
Inline Base64 saves an HTTP request, which used to matter a lot. For tiny icons, signatures in emails, and one off favicons it still makes sense. Email templates also love Base64 because the image survives copy paste better than a remote URL.
How do you use this tool?
- Drop the image into the upload area.
- The tool produces three flavors automatically. Raw Base64 is just the encoded data, data URI includes the format prefix, and CSS url is ready to drop into a stylesheet.
- Copy the version you need.
When should you avoid Base64 for images?
Avoid it for big hero images and photo galleries. Base64 strings are about thirty three percent larger than the original file, plus they cannot be cached separately by the browser. For anything bigger than a few kilobytes, a normal image URL is faster.
Got more questions?
Does this work for any image format?
Will Base64 images appear in Google Images?
Is the output safe to commit to a repo?
Why does the file size grow when using Base64?
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