Convert PNG to WebP
This is the one conversion that's close to a free win. WebP gives you substantially smaller files than PNG and — unlike JPG — it keeps transparency. For images on a site you control, there's very little reason not to.
Convert PNG to WebP now
Smaller files, transparency intact. Free, batch-capable, nothing uploaded.
Open the converter →How to convert
- Open the converter — output is preset to WebP.
- Drop in your PNGs, or the whole image folder from your site.
- Add a long-edge resize if the originals are larger than they're displayed.
- Export.
Why bother
Images are almost always the heaviest part of a web page. Shrinking them is the single most effective page-speed change most sites can make, and page speed feeds directly into Core Web Vitals and search ranking.
WebP typically lands 25–35% below a comparable JPG, and much further below a PNG photograph. Across a page of images that adds up fast.
Resize first. The biggest wins usually aren't the format at all — they're the 4000px PNG being displayed in a 600px slot. Set a sensible long edge and you'll often save more than the format change does.
Where not to use it
WebP is a format for images you serve. Don't send WebP files to clients or upload them to platforms that haven't confirmed support — you'd just be handing someone else a problem. For that, use JPG.
Common questions
Does transparency survive?
Yes — WebP has a full alpha channel, so transparent PNGs come through with transparency intact. This is exactly where WebP beats JPG.
Do all browsers support it?
Every current major browser displays WebP. Only genuinely ancient versions are a concern, and for most sites that's a rounding error in the analytics.
Is WebP lossy or lossless?
It can be either. For photographs lossy is the right choice and gives the big savings; for flat graphics and logos, lossless WebP still usually beats PNG on size.
Can I convert my whole images folder at once?
Yes — drag the folder in, including subfolders, and export as a zip. See batch converting a folder.