How to use it
- Press Choose files or drop your .webp images on the box. A copied image can be pasted with Ctrl+V.
- Keep Save as on PNG to keep transparent backgrounds exactly as they are, or switch to JPG for a smaller file.
- With JPG, pick the Background for transparent parts and set the Quality.
- Each image converts as soon as it's added. Save it with Download, or get everything at once with Download all.
Why saved web images turn out to be WebP
WebP is an image format for the web, documented on Google for Developers. It can compress an image lossily, like JPG, or losslessly, like PNG, and it supports transparency and animation. Google lists native support in Chrome, Safari, Firefox, Edge and Opera.
Because WebP files are smaller than comparable JPG and PNG files, many websites send WebP to the browsers that show it. Right-click a picture and save it, and you often get a .webp file even though it looked like any other photo or logo. Browsers display it happily; the trouble starts with programs and upload forms that accept only JPG or PNG.
PNG keeps transparency, JPG fills it in
A WebP with a see-through background, such as a logo, an icon or a cut-out product shot, stays see-through as PNG, because PNG has a full alpha channel for transparency.
JPG has no alpha channel. When you choose JPG, every transparent or half-transparent pixel is blended onto the colour in Background for transparent parts, white unless you change it. Pick the colour of the page, slide or document where the image will sit, and the soft edges around the shape will blend in instead of showing a pale outline.
PNG or JPG: which one to choose
Both open in practically every program. The difference is what they keep:
| PNG | JPG | |
|---|---|---|
| Transparency | Kept | Filled with the background colour you choose |
| Compression | Lossless: every pixel stays as the WebP shows it | Lossy: fine detail is simplified to save space |
| Good for | Logos, icons, screenshots, graphics with text | Photos |
| File size | Larger | Smaller, and adjustable with Quality |
| Photo details (EXIF) | Not saved | Not saved on this page |
Why the PNG is bigger than the WebP
Expect the PNG to be larger than the WebP you started with. Google's own comparison shows lossless WebP files coming out smaller than PNGs of the same image, so converting back gives that saving up. The file isn't damaged; it simply stores every pixel without WebP's compression.
PNG also can't bring back detail that a lossy WebP already removed. You get an exact copy of what the WebP shows, not of the picture before it was compressed for the website.
Every PNG made here is optimised losslessly with OxiPNG, so it's as small as it can be without changing a pixel. If the size matters more than transparency, choose JPG. A PNG has no quality setting, so Make every file smaller than under More options can only meet a PNG limit by reducing the pixel size.
Questions
- Does converting WebP to PNG lose quality?
- No. PNG is lossless, so the PNG contains exactly the pixels the WebP displays, transparent areas included. Only a choice of JPG adds compression.
- Can I turn the transparent background white?
- Yes: choose JPG under Save as. Transparent parts become white by default, or any colour you pick in Background for transparent parts.
- Can I make WebP files from PNG or JPG here?
- This page saves PNG and JPG. The image converter also saves WebP and AVIF, and reads many more formats.
- Why won't my program open WebP when my browser does?
- Browsers have supported WebP for years, but not every editor, office program or upload form has caught up. Saving a PNG or JPG copy is the simplest fix.
- Are my images sent to a server?
- No. The WebP decoder and the PNG optimiser run in your browser, and the results are saved straight to your device. Many online converters upload your file to their server; this one doesn't.