Webp to Base64

What the WebP to Base64 tool does

This turns a WebP image into a Base64 string, with a ready HTML tag and CSS line that already hold it. Add your WebP, press Encode, and copy whichever output you need. WebP is the modern format you may have started seeing everywhere, and this is how you embed one straight into your code.

Everything runs in your browser, so the image stays on your device.

How to use it

1. Add your WebP. Drag it onto the drop area or click to choose it, and check the preview.
2. Press Encode. You get the raw Base64, an HTML image tag, and a CSS background line.
3. Copy what you need. Each box has its own Copy button.

What makes WebP a WebP

WebP is a newer image format from Google, and its whole reason for existing is to do what the older formats do, but in a smaller file. It is a bit of an all-rounder. It can compress in a lossy way like a JPG for photos, or losslessly like a PNG for graphics, it supports transparency the way PNG does, and it can even animate the way a GIF does. The headline is the size: for a comparable level of quality, a WebP is usually noticeably smaller than the equivalent JPG or PNG, often by a quarter or more. The one thing to keep in the back of your mind is reach. WebP is supported across all current browsers now, but very old browsers and some email clients do not understand it, so for an audience that might include those, a JPG or PNG fallback is the safe call.

Why WebP is the efficient one to inline

Inlining an image lives and dies by size, and that is precisely where WebP has the edge. Since Base64 adds roughly a third to whatever you feed it, starting from a smaller file means a smaller string at the end, so the same picture as a WebP inflates your HTML or CSS less than it would as a JPG or PNG. That makes WebP a sensible pick when you do want to embed something and you care about page weight. The usual guidance still holds, mind you: this pays off for small images, and the caching and first-paint trade behind it does not go away just because the file is lighter. So keep it to small WebPs, and lean on the full rundown on the Image to Base64 page. And if your visitors might be on something old enough not to support WebP at all, remember the embedded image will simply not show for them, so weigh that before committing.

How it works

The browser's FileReader reads your WebP and produces a data URI in the data:image/webp;base64, form, which the HTML and CSS outputs wrap around. Base64 rewrites the image's binary data as plain text so it can sit inside your code. The mechanics are walked through on the Image to Base64 page.

Questions people ask

How do I convert a WebP to Base64?

Add the WebP here and press Encode. You get the Base64 string plus ready-to-paste HTML and CSS, each with the image already embedded.

Why pick WebP for embedding?

Because it is usually smaller than the same image as a JPG or PNG. Since Base64 adds about a third to any file, a smaller starting file means a lighter result, so WebP keeps your page weight down.

Will an embedded WebP work everywhere?

In all current browsers, yes. Some very old browsers and certain email clients do not support WebP, and for them the embedded image will not display, so use a JPG or PNG if you need to cover those.

Does WebP keep transparency and animation?

Yes. WebP supports both, and since the whole file is encoded as text, transparency and any animation come through the conversion intact.

References

1. Masinter, L. (1998). RFC 2397: The "data" URL scheme. Internet Engineering Task Force (IETF). https://www.rfc-editor.org/rfc/rfc2397
2. Google Developers, WebP: A new image format for the Web. https://developers.google.com/speed/webp