Image to Base64 Converter
Choose an image file and this tool encodes it as a Base64 data URI, ready to paste into an <img> src, a CSS background-image, or a JSON payload. Everything happens locally in your browser: the image is never uploaded anywhere.
No image selected yet — choose a file to get started.
Your image never leaves your browser
This converter reads the file locally using the browser's File API and never uploads it anywhere — the encoding happens entirely on your device, so it works offline and keeps your images private.
How it works
A Base64 data URI embeds the image's raw bytes directly inside a string, prefixed with its MIME type (e.g. data:image/png;base64,...). You can drop that string anywhere a URL is expected — an <img> tag, a CSS background-image, or a JSON field — with no separate file to host.
Tip
Base64 encoding inflates file size by roughly a third, so it works best for small icons, logos, or thumbnails rather than large photos — for bigger images, linking to a regular file is usually faster.
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