Base64 to Webp

What the Base64 to WebP tool does

You have a Base64 string that is a WebP image, and you want the file back. Paste it in, press Convert, and the image appears in a preview, ready to download as a .webp, with HTML and CSS snippets alongside if you need them.

The work happens in your browser, so the image stays on your device.

How to use it

1. Paste your Base64. The bare string works, and a full data:image/webp URI does too.
2. Press Convert. The image shows in the preview.
3. Download it as a WebP, or copy the HTML or CSS version.

It comes back as WebP, and stays WebP

Worth being straight about this one. The tool decodes your Base64 back into a file, it does not convert between formats, so what you get out is a WebP, the same as what went in. That has a small practical edge to it that the other formats do not. WebP is modern and efficient, but it is not understood everywhere. Current browsers handle it fine, but some older software and a few image viewers still will not open a .webp at all. So when you download the file here, keep in mind it is a WebP, and if you need to hand it to something that cannot read one, you would have to convert the image itself into a JPG or PNG, which is a separate job from decoding. For getting a WebP that was stored as Base64 back into a usable file, though, this is exactly the tool.

When you would reach for it

WebP shows up as Base64 on modern sites and apps that lean on it to keep image weight down. A content system or CDN might store and return images as WebP strings, an API might hand one back, or you might pull a WebP data URI out of a page built for performance. When you want the actual .webp file out of that string, to save it or reuse it, this decodes it for you. The full mechanics are on the Base64 to Image page.

How it works

The tool wraps your Base64 in a WebP data URI, points an image at it so the browser decodes and shows the picture, and offers that same data back as a file. The complete walk-through is on the Base64 to Image page.

Questions people ask

How do I convert a Base64 string to a WebP?

Paste the Base64 and press Convert. If it is a WebP, the image appears in the preview and downloads as a .webp file.

The downloaded WebP will not open in my image viewer. Why?

Some older software does not support WebP. The file is a valid WebP, but the viewer cannot read the format. Open it in a current browser, or convert the image to JPG or PNG for older tools.

Can it turn a WebP into a JPG or PNG?

No. It decodes Base64 back into a file without re-encoding, so the result stays WebP. Changing the format is a separate image conversion.

Where do Base64 WebPs come from?

Usually from modern sites, apps, CDNs, or APIs that use WebP to keep images small. This pulls the .webp file back out of the string.

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