A WebP you saved from a website becomes a JPG at JPEG quality 92. Transparent areas are filled with white, because JPG cannot keep them. Add several files if you need more than one, and an animated WebP becomes a still of its first frame. The file is uploaded, converted, and downloaded as a JPG.
Drop one WebP or several. A file that is not a WebP is rejected with the same error the other converters show.
2
Click Convert
Each file is uploaded and written as a JPEG at quality 92. See-through pixels are placed on white. An animated WebP keeps its first frame only.
3
Download the JPG
Download each JPG on its own, or use Download All. The result is a still photo file you can attach, print, or drop into a form.
PNG or JPG: which one?
Use JPG when the picture is a photo and the next step wants a file that opens everywhere. Use PNG when the see-through background is the point.
Feature
JPG
PNG
Best for
Photos, email, print, and upload forms
Logos, stickers, icons, and screenshots
Transparency
Filled with white
Kept, including soft edges
Animation
First frame only, as a still
First frame only, as a still
Compression
JPEG at quality 92
Lossless PNG of the decoded frame
File size
Usually smaller for a photo
Often larger, and not sharper
Where it opens
Almost any app, form, or printer
Editors, design tools, and most forms
Why your images save as WebP
Chrome, Edge, Firefox, and Safari can display WebP, so many sites send that format instead of a heavier JPG. Google documents WebP as a web image format built for smaller downloads, and MDN lists it among the image types browsers display. When you right-click and save, you keep the file the browser received.
A photo viewer, an older Word document, a government form, or a print dialog can still refuse .webp. The picture is fine. The container is the problem. A JPG is the file those places already accept.
When JPG is the right pick
Choose JPG for a photo you need to email, attach to a listing, drop into Word, or send through an upload form that lists JPG only. Quality 92 keeps the photo very close to the WebP. The file is usually smaller than a PNG of the same picture.
A logo, sticker, or icon with a clear background is a different job. White will show up behind the mark. Leave that file on the PNG page.
What changes in the conversion
Transparent pixels are flattened onto white. There is no background-color picker. Animated files become a still of the first frame, at the size of that frame, not a stacked strip of every frame. The JPEG is written at quality 92.
Several WebP files convert on their own. You get one JPG per file. A wrong file, or a renamed picture that is not really WebP, stops with the message to upload a valid WebP image.
On Windows, Paint can open many WebP files and save a JPEG. On a Mac, Preview’s Export dialog can write a JPEG. On a phone, Photos can sometimes share a JPEG copy. Those apps are enough for one picture. This page is the place when you have several WebP files and want the same white fill and quality 92 on each of them.