PNG to WebP converter

WebP is the conversion for people who need a PNG to get smaller without losing its transparent background. It runs entirely on your own device.

Converting to WebP. Drop one picture or a whole pile of them.

Drop your pictures here

or click to browse. iPhone photos, JPG, PNG, WebP and AVIF, with no size cap. Up to 50 at a time. Stays on your device.

Nothing is uploaded

The conversion runs on your own device. Turn your network off once it starts and it still finishes.

No cap on the file

There is no server bill to protect here, so the only limit is your own device, not a plan tier.

No signup, no watermark

No account, no trial, and no upgrade prompt on the download. Ads pay for the site.

Up to 50 at a time

Drop a pile of pictures in together. More than one result arrives as a single zip.

Why convert PNG to WebP?

PNG is the format the web overuses. It gets picked because it is safe and lossless, and then a page ends up carrying several megabytes of images that could have been a few hundred kilobytes with nothing visibly different.

WebP is the direct replacement, because it does the one thing that used to force the choice: it stores transparency. Before WebP, wanting a transparent background meant accepting PNG file sizes.

For interface assets, icons and illustrations, this conversion routinely takes 70 to 90 percent off the file with no visible change.

What changes in the file

  • Transparency is preserved, including soft edges.
  • The file gets much smaller. Flat graphics and illustrations gain the most; photographs saved as PNG gain enormously.
  • Very old software will not open it. This is a conversion for files headed to the web, not for a file you are about to hand to an unknown person.

How to convert

  1. Check that WebP is the selected format above. It is picked for you on this page.
  2. Drop your PNG images into the box, or click it to browse.
  3. Download the result. It never left your device.

Frequently asked questions

Is WebP lossless like PNG?

It can be, but this page writes lossy WebP, which is what makes it small. For flat graphics the difference is usually invisible. If you need bit-exact output, stay on PNG.

Will search engines penalise WebP images?

The opposite. Google recommends modern formats and measures page speed as a ranking signal. Smaller images help.

What about AVIF?

AVIF is smaller again, especially for photographs, and also keeps transparency. It is newer, so support outside browsers is thinner. WebP is the safer choice of the two today.

Other conversions

  • PNG to JPG For the screenshot that is too big to attach.
  • HEIC to WebP Keeps HEIC-like file sizes, but the web can actually read it.
  • JPG to WebP Roughly a third off a photo, with no visible change.

Or open the image converter to pick any combination, and the image compressor when the problem is size rather than format.