Convert any image to a base64 data url instantly. Drop your image and immediately get the raw Base64 string and the full data:image/...;base64,... format ready for HTML and CSS. Useful for embedding images inline, building email templates, or testing API payloads. Files never leave your browser.
Drop an image file onto the drop zone or click to browse and select a file. This image to base64 converter instantly reads the file using the browser's FileReader API and outputs both the raw Base64 string and the full data URL. No upload is required — the conversion happens entirely in your browser.
A Base64 data URL is a string that encodes an image (or any file) directly into a URL. It has the format: data:image/jpeg;base64,YOURBASE64STRING. This allows images to be embedded directly in HTML, CSS, or JSON without needing a separate file. The data URL includes both the image type and the encoded data.
Copy the data URL output and use it as the value of the CSS background-image property: background-image: url("data:image/jpeg;base64,..."). This embeds the image directly in the stylesheet. It is best suited for small images like icons, as large base64 data urls increase CSS file size significantly.
There is no hard limit imposed by this tool — conversion happens in your browser and is limited only by available memory. However, Base64 encoding increases file size by approximately 33%, so a 1 MB image becomes ~1.33 MB of Base64 text. Very large images (over 5 MB) may be slow to display as a data URL.
No. This image to base64 converter processes everything locally in your browser using the FileReader API. Your image is never uploaded to any server. You can verify this by opening DevTools → Network tab and dropping an image — there will be zero outbound requests.