Why you keep getting WebP files
Most websites now send images as WebP, because it is smaller than JPG for the same look and every current browser shows it. The trouble starts when you save one of those images and try to use it somewhere else. This guide explains where WebP files come from, what you gain and lose by converting to JPG, and how to deal with transparency, animation and files that are WebP in disguise.
When your browser asks a website for an image, it says which formats it understands. If WebP is on the list, many sites send WebP. Save the image and you get exactly what was sent, even though the same picture may exist on the server as a JPG. The next form, app or printer that expects JPG then refuses it.
| WebP | JPG | |
|---|---|---|
| Compression | Lossy or lossless | Lossy only |
| Transparency | Yes | No |
| Animation | Yes | No |
| Size for the same look | Usually smaller | Usually larger |
| Browsers | All current ones | All |
| Forms, portals, printing services, older apps | Patchy | Accepted almost everywhere |
| Best for | Web pages | Sharing, uploads, printing, older editors |
A worked example
Suppose you saved a 1200 by 1200 pixel product photo from an online shop as a 140 KB WebP. Converted to JPG, it might come out at roughly 200 to 300 KB at the default 92 percent, and around 150 to 200 KB at 85 percent. With Also limit file size set to 100 KB, it lands under 100 KB, with quality lowered first and the dimensions only if needed. These figures are illustrative; the result card shows the real size and the change in percent.
The JPG is larger because JPG is the less efficient format, not because detail was added. Converting cannot bring back detail the WebP already discarded, so if the site offers a larger version of the image, for example by opening it in its own tab or a zoom view, save that one before converting.
How to convert WebP to JPG
- Drop the WebP files onto this page, press Choose files, or copy an image in your browser and paste it with Ctrl+V (Cmd+V on a Mac).
- JPG is already selected. Keep Quality at 92 percent, or at 90 percent or higher for images you will edit again.
- Choose a Background colour for any transparent areas. White is the default.
- If the destination has a size limit, turn on Also limit file size and type it.
- Press Convert, check the result with Compare before and after, and download each file or the whole batch as a ZIP.
The new file keeps the original name with a .jpg extension. Up to 50 files convert in one batch on the free plan.
Choosing the quality
A WebP from a website has usually been compressed once already. Converting it to JPG compresses it a second time, and the two sets of artifacts add up. That is why the default is 92 percent rather than something lower: at that setting the second round is effectively invisible on photos.
Lower the quality only when you need a smaller file, and in that case prefer Also limit file size, which finds the highest quality that fits your limit instead of making you guess.
Animated WebP
Some WebP files are short animations, like a GIF. JPG cannot hold animation, and this converter takes only the first frame of an animated WebP. If you need the animation, keep the WebP; it plays in every current browser and in most messaging apps. If you need it as a GIF, you will need the frames as separate images first, which GIF Maker can then assemble.
Troubleshooting
- Transparent areas turned white: JPG cannot store transparency, so those areas are filled with the Background colour. Pick the colour of the page the image will be placed on, or convert to PNG to keep the transparency.
- A logo or diagram looks smudged: it was probably a lossless WebP with sharp edges. Raise the quality to 95 percent or more, or convert to PNG.
- Renaming did not help: changing .webp to .jpg in the file name does not change the data inside, and many apps reject the file or show an error. This converter reads the actual data, so a renamed WebP converts correctly.
- Colours shift slightly: the JPG is written as standard sRGB without an embedded colour profile. Most web images are sRGB already, so this is rarely visible.
- This browser cannot encode WebP: you only see this when converting to WebP, not from it. WebP to JPG works in every supported browser.
When not to convert
- Images for your own website. WebP is smaller and loads faster; converting to JPG makes pages heavier.
- When the destination already takes WebP. Recent versions of Windows, macOS and the major photo editors open WebP, and many upload forms accept it; try the original first.
- Graphics with transparency that you will place on several backgrounds. Convert to PNG instead.
- Animated WebP files you want to keep animated.
Converting locally versus uploading
An upload-based converter needs every file sent to its server and then downloaded again, which adds waiting time for each image and a copy of your files on someone else's machine. Here a folder of saved WebP images is converted inside your browser tab, nothing is sent anywhere, and a batch starts the moment you press Convert. The free plan handles 50 files per batch up to 200 MB each. Pro raises that to 500 files and 1 GB per file, and the installed app works without a connection.