You saved an image from a web page, it came down as .webp instead of .jpg, and now nothing will open it. The file is not broken — the browser rendered it perfectly a moment ago. The trouble starts the instant the file leaves the browser.
Why you keep running into WebP
Google released WebP in 2010. It holds the same visual quality in a smaller file than JPG and, unlike JPG, it can carry transparency. For a website that means faster pages and a smaller bandwidth bill, so most large sites now serve their images as WebP.
Browser support is a settled question: Chrome, Edge, Firefox and, since 2020, Safari all read it. But browsers are not the only place we use images. We drop them into documents, open them in editors, and upload them somewhere. That is where things break.
Four places it usually breaks
- The Windows 10 Photos app — not supported out of the box. Windows 11 handles it natively.
- Older editors — recent Photoshop releases open WebP directly; earlier versions need a plug-in installed.
- Upload forms — job boards, government portals and store product uploads often state 'allowed: jpg, png'. Renaming the file to .jpg will not help; the server inspects the contents and rejects it.
- Office documents and messaging apps — the image may simply fail to display.
In all four cases the file itself is fine; it just needs to be in a format the other side can read. Installing a codec works, but only on your own machine — the upload form still refuses it. Converting the file solves both.
JPG or PNG?
This is the part that matters most. WebP can carry a transparent background; JPG cannot. Convert a transparent WebP to JPG and every transparent pixel gets filled with a single colour — and if nothing specifies that colour, it is usually black. That is the story behind every 'I converted my logo and the background turned black' complaint.
| What you have | Convert to | Why |
|---|---|---|
| A photo, or any image with a full background | JPG | Smallest file, opens everywhere |
| A logo, icon, or transparent background | PNG | Keeps the transparency intact |
| Not sure whether it is transparent | PNG | Lossless, so nothing is thrown away |
If it has to be JPG and the original is transparent, use a converter that lets you pick the fill colour. For an image going into a white document, filling with white is what makes it blend in.
Two things to know before you convert
First, converting an animated WebP to JPG or PNG leaves you with a single frame. Neither format holds a sequence of images. If the motion matters, keep the WebP and use it somewhere that supports it.
Second, WebP to JPG means one more round of lossy compression. If the source was already lossy WebP, it degrades slightly further. One pass is not noticeable, but repeated round trips accumulate. If you need a master copy to keep editing, take PNG.
Converting in the browser means the file never leaves your device
Most converter sites upload your file to a server, convert it there and send it back. Usually that is fine, but not every file is one you want sitting on someone else's server — a photographed contract, an ID card. Switching converts WebP entirely inside your browser; the file never leaves the device. You can verify it by disconnecting from the internet and converting anyway.