What does this tool do?
| Direct answer | Image to Base64 produces a data URI you can paste into CSS url() or HTML src attributes. |
| Key fact | Base64 inflates size by ~33% — best for small icons, not photos. |
| Processing | Runs locally in your browser; no data is sent to a server. |
How to use
- Drop an image into the box.
- Click Convert to Base64.
- Copy the data URI.
Example
Input
icon.png (2.1 KB)
Output
data:image/png;base64,iVBORw0… (2.8K characters)
Who is this for?
This tool was built for people who need a fast answer in the browser — no install, no account, no data leaving the device.
Web developers optimizing images for Core Web Vitals, designers preparing assets, and bloggers shrinking photos — files never leave your device.
Frequently asked questions
When should I embed images as Base64?
Small icons and logos — it saves an HTTP request at modest size cost.
How much bigger is Base64?
About 33% larger than the binary original.
Any browser limit?
Data URIs over a few MB may slow parsing; keep them small.