Image to Base64
Convert an image to a Base64 data URL locally with FileReader — no upload.
The image is read only in your browser with FileReader. It is never uploaded to the server.
Base64 / data URL
About Image to Base64
Base64 data URLs let you embed small images directly in HTML, CSS, or JSON. This converter reads the file with the browser FileReader API. The image never leaves your device and is not saved on the server.
How to use
- Choose an image from your device.
- Copy the data URL from the output box.
- Paste it into CSS
url(), an<img src>, or an email template.
Tips
- Keep embeds small — large Base64 strings bloat HTML.
- Prefer external files for big photos; use Base64 for icons and tiny assets.
- There is an 8 MB client-side guard to keep the browser responsive.