How to Convert an Image to Base64
Base64 encoding turns an image's binary data into a plain text string that can be dropped directly into HTML or CSS — as a data: URI — instead of linking out to a separate image file. It's not something most people need often, but when you do need it, it's usually for a specific, practical reason: embedding a small icon or logo directly into a single-file HTML document, avoiding an extra network request for a tiny image, or working inside a system that only accepts inline text and won't let you reference an external file.
Steps
- Open the Image to Base64 Converter and upload your image.
- Copy the generated Base64 string, or the full
data:URI if that's what the tool provides. - Paste it directly into your HTML
<img src="...">attribute or CSSbackground-imageproperty.
Why this isn't the right call for most images
Base64 text is roughly 33% larger than the original binary file, and inline images can't be cached separately by the browser the way a normal linked image file can. For anything bigger than a small icon, or anything that appears on multiple pages, a regular linked image file is almost always the better choice — smaller total transfer, and the browser caches it once instead of re-downloading the inflated text version on every page.