Use sparingly
Data URIs can reduce separate requests for tiny assets, but they increase source size and cannot be cached independently.
Developer · Free, no signup
Convert an image to a Data URI
Make a self-contained text representation for prototypes, small icons, or debugging. Large photos are usually better as files.
- No watermark
- Stays in your browser
- Real quality controls
Choose an image
Converted locally in this browser
Browser-only tool. The image or Base64 value is not uploaded.
Three clean steps
Get the result, then get on with it
The workspace keeps choices close to the file. Explanations stay down here.
- Choose images or drop them into the workspace.
- Set the result you need.
- Process, review, and download.
Worth knowing
Convert an image to a Data URI, with the tradeoffs visible
Solve the whole problem
Useful guides for this tool
01
How to embed a Base64 image in HTML or CSS
Create a Data URI, place it in HTML or CSS, and know when a normal image URL is the better choice.
Read and use the tool ↗02How to decode Base64 to an image safely
Normalize a Base64 value, detect the real image type from bytes, preview it safely, and download the result.
Read and use the tool ↗03Base64 images explained
Learn what Base64 is, why it adds overhead, when Data URIs help, and when normal image files are better.
Read and use the tool ↗04The best image format for the web
Choose image formats by content, compatibility, alpha, animation, and performance rather than fashion.
Read and use the tool ↗05Image optimization for Core Web Vitals
Improve image loading with responsive dimensions, stable layout space, compression, priority, and measured page testing.
Read and use the tool ↗