Convert PNG to WebP
Your files stay on this device. Nothing is uploaded, nothing is stored on a server.
Drop your files here
or pick them from your device
How it works
- Drop your .png files onto the bench, or pick them from your device.
- Choose a quality level. 90 keeps edges and text crisp; lower makes smaller files.
- Press Convert, then download the WebP files singly or as a .zip.
This conversion exists for one reason: page weight. WebP typically stores the same picture in a good deal less space than PNG, and images are usually the heaviest thing on a web page. Swapping a few large PNGs for WebP is one of the cheapest ways to make a site feel faster, and it counts directly towards the loading scores search engines measure.
Support is no longer the objection it once was. Every current browser reads WebP, and has for several years. What still lags is everything that is not a browser — email clients, older desktop software, some CMS uploaders, and a few social platforms. So the sensible place for WebP is inside your own website, where you control how the image is served. It is a poor choice for a file you are emailing to a colleague or sending to a printer.
Transparency comes across intact, which is what makes this different from converting a PNG to JPG. A cut-out logo, an icon with soft edges, a badge meant to sit on a coloured background — all of it keeps its alpha channel, so nothing gains an unwanted white rectangle.
One honest caveat about quality. This tool writes lossy WebP, the same family of compression as JPG, so it is not a byte-perfect copy of your PNG. At quality 90 the difference on flat graphics and screenshots is extremely hard to see, and the file is usually far smaller. If you need a guaranteed pixel-identical copy — a design master, an image you will keep re-editing — keep the PNG.
Questions people ask
- Do all browsers support WebP now?
- Every browser in current use does, including Safari, and has for several years. The gaps are outside the browser: some email clients, older desktop applications and a few upload forms still do not accept it.
- Is transparency kept?
- Yes. WebP has an alpha channel just like PNG, so transparent and semi-transparent pixels come across unchanged. No background colour is filled in.
- Is this a lossless conversion?
- No. This tool produces lossy WebP, so a small amount of detail is discarded — very little at high quality settings, more as you lower the slider. If you need an exact copy of the PNG, do not convert it.
- How much smaller will my files get?
- It depends heavily on the image. Screenshots, illustrations and logos often drop by half or more. PNGs that are actually photographs can shrink far more than that. A tiny icon may barely change.
- Should I use WebP for everything on my site?
- For photographs and illustrations, yes. Keep PNG or SVG for anything that must stay pixel-exact, and remember that people who right-click and save your image will end up with a file some of their software cannot open.
- Are the images uploaded to a server?
- No. Your browser does the encoding on this page. The files stay on your device and nothing is stored anywhere after you close the tab.