Convert PNG to WebP
Noticeably smaller for the web, at the same apparent quality.
or drop your PNG anywhere on this page
PNG → WebP
Transparency survives the switch
To convert PNG to WebP, select or drop your PNG on this page, keep Balanced or pick another Image quality, and press Convert to WEBP. The WebP is made in your browser, so nothing is uploaded, and it keeps the name of the PNG: logo.png is saved as logo.webp.
See-through areas stay see-through. A logo on a clear background, an icon, or a window screenshot with a soft shadow comes out with the same transparency, half see-through edges included. In our tests in Chrome and Firefox, the transparency of every pixel matched the PNG exactly. Only a JPG fills those areas with white.
This free PNG to WebP converter works online in current Chrome, Edge and Firefox, with no daily limit. Need a PNG again later? Convert WebP to PNG: the transparency comes back with it, though detail the WebP left out does not.
How to convert PNG to WebP
- 1Select or drop your PNG
It stays on your device.
- 2Choose your options
We show the route and its fidelity grade up front.
- 3Download your WebP
Nothing was uploaded, so there is nothing to delete.
Lossless pixels with transparency. Screenshots, logos, anything with an edge.
The web’s efficient format. Smaller than JPEG, refused by older software.
WebP compresses the picture, so fine detail is lost. It looks right at normal size.
What lossy WebP trades for a smaller file
WebP can be saved in two ways: lossless, which keeps every pixel, or lossy, which drops small details to save space. This page always makes lossy WebP, at every setting, because that is where the big savings are. That is why the route is graded Very good rather than Exact: the picture looks the same at normal size, but its pixels are no longer identical.
How much you save depends on the picture. Photos shrink the most, because PNG stores them inefficiently. Screenshots shrink by about half. A small logo of a few flat colours, which PNG already packs tightly, can come out larger: our 2.9 KB logo became 4.7 KB at Balanced. For a file like that, keep the PNG, or make it smaller with Compress PNG, which keeps it a PNG with its transparency.
Choosing a quality setting
Image quality has three settings, and each one trades file size against detail. These are the sizes our three test PNGs came out at in Chrome:
| Image quality | Photo (6.2 MB PNG) | Screenshot (114 KB PNG) | Logo (2.9 KB PNG) |
|---|---|---|---|
| Smaller | 344 KB | 51 KB | 4.3 KB |
| Balanced (the default) | 518 KB | 60 KB | 4.7 KB |
| Best | 1.3 MB | 89 KB | 6.1 KB |
Balanced suits most photos and graphics for a website. Smaller gives the lightest file, for pages that must load fast. In our screenshot the text stayed sharp at all three, and Best kept the closest match to the PNG, so pick it for small text and fine lines. Firefox gave sizes within 1% of these for the photo and the screenshot.
Whatever the setting, the WebP keeps the width and height in pixels of the PNG. The hidden camera and GPS details in our test photo were dropped, so the WebP you publish carries no location.
WebP or JPG: which suits your PNG
A JPG cannot hold transparency, so PNG to JPG puts a white background behind see-through areas. WebP keeps them, and in our tests it also made the smaller file at the same setting:
- The photo: 518 KB as WebP and 622 KB as JPG, both at Balanced.
- The screenshot: 60 KB as WebP, but 122 KB as JPG, larger than the PNG itself.
- The logo: 4.7 KB as WebP and 11.9 KB as JPG, on a white rectangle.
JPG wins on reach. Web browsers show WebP, but older software, some photo editors and some upload forms still refuse it. For a picture going on a website, WebP is the lighter choice; for email or an upload form, a JPG is the safer one.
To batch convert PNG to WebP, add up to 100 PNGs in one go. Your device works through them in turn and names each WebP after its PNG. Download all (ZIP) saves the lot as whatafile-converted.zip, and every file also has a Download button of its own.
Starting from another format? Convert JPG to WebP for photos, convert GIF to WebP to keep an animation moving, or convert SVG to WebP for a logo drawn as an SVG.
Questions people ask
How do I convert PNG images to WebP in bulk?
Select or drop up to 100 PNGs on this page, pick an Image quality and press Convert to WEBP. They convert one after another on your device. Save each WebP on its own, or all of them at once with Download all (ZIP). A single PNG works the same way.
Will my transparent PNG stay see-through as a WebP?
Yes. Transparent and half see-through areas are kept exactly: in our tests the transparency of the WebP matched the PNG pixel for pixel. Only a JPG fills them with white.
Can I convert PNG to WebP without losing quality?
Not on this page: the WebP it makes is lossy at every setting, so some fine detail goes. At normal size a photo or a screenshot looks the same, and Best keeps the most. If every pixel must stay exact, keep the PNG.
How much smaller is a WebP than the PNG?
It depends on the picture. At Balanced, our 6.2 MB PNG photo came out at 518 KB, about a twelfth of the size, and a 114 KB screenshot at 60 KB, about half. A tiny logo of flat colours grew, from 2.9 KB to 4.7 KB.
Should I convert my PNG to WebP or to JPG?
WebP for a website: it keeps transparency, and it made smaller files than JPG in our tests. JPG for email, upload forms and older software, which may refuse a WebP. A JPG fills transparent areas with white.
Is converting PNG to WebP free?
Yes, and there is no daily limit. The conversion runs in your browser, so it costs us nothing to run.
What happens to my files?
Nothing leaves your device. The PNG is read and the WebP is made inside your browser, so there is nothing on our servers to delete.
Will the WebP look exactly like the PNG?
This pair grades as “Very good”. We show the exact route and that grade before you convert, so there are no surprises about what survives the trip.
Do I need to install anything?
No. Pick or drop a file here, it is converted in your browser, and you save the result.
How large can my file be?
As large as your browser can handle: pictures up to about 90 megapixels on a typical computer, less on a phone.
Can I convert several files at once?
Yes. Add up to 100 files at a time and they convert one after another on your device.
Related conversions
PNG
PDFPNG to PDF
Screenshots into a single PDF page, at full resolution.
PNGJPEGPNG to JPG
Make a heavy screenshot small enough to send. Loses transparency.