Conversion
How to Convert an Image to Base64 (Data URI)
Encode any image as a Base64 data URI to embed directly in HTML, CSS, or JSON — no separate file needed.
2026-06-13 - 4 min read
What Base64 image encoding is for
A Base64 data URI lets you embed an image directly in your code so the browser doesn't make a separate network request — useful for small icons, email templates, and inlined assets.
Our tool outputs the raw data URI, a ready-to-paste CSS background line, or a complete HTML img tag.
When NOT to use Base64
Base64 increases file size by about 33% and can't be cached separately by the browser, so avoid it for large photos — use a normal image file instead.
It's ideal for tiny images under a few KB. Encoding happens entirely in your browser, so your file stays private.
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