Convert an image to a Base64 data URI for inline embedding.
Processed locally — your image is never uploaded.
How do you convert an image to a Base64 data URI?
The file is read as a data URI in the form data:[mime];base64,[encoded bytes], where Base64 encoding adds about 33% to the byte size. A small PNG icon becomes data:image/png;base64,iVBORw0KGgo… ready to paste inline. Inlining saves a network request, which suits tiny images. Everything runs in your browser.
Understanding your result
Inlining saves a network request, which suits tiny images. For larger files the Base64 string gets big, so a normal image file is usually better.
Formula and method
The file is read as a data URI: data:[mime];base64,[encoded bytes]. Base64 encoding adds about 33% to the byte size.
Worked example
A small PNG icon becomes data:image/png;base64,iVBORw0KGgo… ready to paste inline.
How to use this tool
- Choose an image file.
- Copy the generated data URI.
- Paste it into an img src or a CSS background.
Common mistakes to avoid
- Inlining large images, which bloats your HTML or CSS and slows parsing.
About the Image to Base64
Convert an image into a Base64 data URI you can embed directly in HTML or CSS, with no separate file request. Everything runs in your browser.
Who should use this tool
Developers inlining small images, icons or email assets to cut HTTP requests.
Frequently asked questions
Is my image uploaded?
No. The file is read locally in your browser and never sent to a server.
When should I use a data URI?
For very small, rarely-changing images. For anything large, a regular image file is more efficient and cacheable.