About Image to Base64
This converter reads your image and produces a Base64-encoded data URI that can be embedded directly in CSS, HTML or JavaScript, eliminating a separate network request for small icons and logos. It shows the encoded size so you can judge whether inlining is worthwhile.
As a rule of thumb, inline images smaller than about 2 KB, and keep data URIs out of HTML that needs to be cached separately. Everything is encoded locally, so no image is uploaded, and you can copy the raw string or a ready-made background-image or img tag snippet.
How to use Image to Base64
- Choose an image
Drop a small PNG, JPG, SVG or WebP file. The encoded data URI is generated immediately.
- Copy the snippet you need
Copy the raw Base64 string, a CSS background-image rule, or an HTML img tag with one click.
- Paste into your code
Use the snippet in your stylesheet or markup. Check the encoded size shown to keep your pages lean.
Frequently Asked Questions
When should I use Base64 instead of a normal image file?
Use Base64 for tiny assets such as icons, spacers and simple logos under about 2 KB, where removing an HTTP request helps. For larger images a normal file is smaller and can be cached and lazy-loaded, so keep those as separate files.
Does Base64 make the image bigger?
Yes, Base64 encoding adds roughly 33% overhead, and the data URI prefix adds a little more. That is why inlining is only recommended for very small images where the saved request outweighs the extra bytes.
Are my images uploaded to convert them?
No. The file is read with the FileReader API and encoded in your browser, so nothing is transmitted. This is convenient for internal icons and for assets you would rather not send to a third-party service.