Image to Base64
Convert an image into a Base64 data URI you can paste straight into HTML, CSS or JSON. Choose a raw string, a full data URI, a CSS background rule or an img tag, and copy it or download it as a text file. Encoded in your browser.
- Runs entirely in your browser
- No sign-up, no watermark
- Free and unlimited
How to use Image to Base64
- 1
Drop a file onto Image to Base64, or click to choose from your device.
- 2
Set any options for how the file should be processed.
- 3
Press the action button — everything runs in your browser.
- 4
Download the result. Nothing is uploaded or stored.
What you get
- Raw Base64, data URI, CSS background or img tag output
- Copy small results straight from the page
- Download any size as a text file
- Runs locally — the image is never uploaded
What happens to your files
This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.
There is no account, no email, no watermark and no daily limit. Come back whenever you need it.
Frequently asked questions
- When should I inline an image as Base64?
- For tiny, frequently used assets like icons it saves a request. For anything larger it inflates your HTML or CSS by about a third and hurts caching, so a normal file is better.
- Is there a size limit?
- The tool accepts files up to a few megabytes. Very large images make an impractically long string, so keep Base64 for small graphics.