Free Image to Base64 Converter
Upload an image and get its Base64 data URI and raw Base64 string instantly — ready to paste into your HTML or CSS. Runs privately in your browser.
Click to upload or drag and drop
PNG, JPG, GIF, SVG, WebP · up to 5MB
What is an Image to Base64 converter?
This tool turns an image file into a Base64 text string so you can embed it directly in your code instead of linking to a separate file. Inlining small images as data URIs can cut network requests and is handy for email templates, single-file demos, and CSS backgrounds.
Drag in a PNG, JPG, GIF, SVG, or WebP and you'll get both a ready-to-use data URI and the raw Base64. Everything is processed locally with the browser's FileReader, so your images are never uploaded. Keep in mind Base64 adds about a third to the file size, so it's best for small assets.
Frequently asked questions
Why convert an image to Base64?
Base64 lets you embed an image directly in HTML or CSS as a data URI, removing a separate network request. It's useful for small icons, email templates, and inlining images where you can't host a separate file.
What's the difference between the data URI and raw Base64?
The data URI includes a prefix like 'data:image/png;base64,' and can be dropped straight into an <img> src or CSS background. The raw Base64 is just the encoded bytes, for when you need the string on its own.
Are my images uploaded to a server?
No. The conversion happens entirely in your browser using the FileReader API — your image never leaves your device.
Is there a size limit?
You can convert images up to 5MB. Note that Base64 makes data roughly 33% larger, so it's best suited to small images.