Free tool

PNG to WEBP converter transparency kept, size cut.

Drop PNG files and download WebP versions that keep the transparency and lose most of the weight. Logos, screenshots and UI graphics for a faster site.

PNG to WEBP converter at a glance

content.win converts images entirely, with no queue and no limit on how many you convert. It is one of the few free converters that opens HEIC from an iPhone on every browser, not only Safari.

Works with
JPG, PNG, WebP, HEIC and HEIF, GIF, BMP, SVG, AVIF. Several at once.
Comes back as
JPG, PNG or WebP, with a quality setting.
Runs
In your browser.
Limits
No daily limit and no cap on how many files. Images up to 24 megapixels.
Price
Free. No account, no watermark.

How to convert PNG to WebP

  1. Drop the PNG files in. Logos, icons, screenshots, illustrations. Several at once is fine.
  2. Pick a quality. Quality 85 to 90 keeps graphics and text crisp. Transparency comes across as it is.
  3. Download and use. Ready for any site builder or a plain img tag.

Why PNG to WebP is the biggest win on a page

The size gap is huge
PNG stores every pixel exactly, so screenshots and illustrations run to megabytes. As WebP the same image is often 70 to 90 percent smaller with no visible change.
Transparency survives
The reason people kept PNG was transparency. WebP keeps it, at a fraction of the size, which JPG never could.
Page speed
Large PNGs are the most common cause of a failing Largest Contentful Paint. Converting them is the fix page-speed tools suggest first.

When to keep the PNG

  • Master files you will keep editing. WebP at quality 85 is lossy; keep the PNG as the source and publish the WebP.
  • Images that go to people rather than pages. Older apps, some email clients and print shops still want PNG or JPG.
  • Pixel art and screenshots where every pixel must be exact: use WebP quality 100, which is lossless, or keep the PNG.

Questions people ask

Does PNG to WebP keep transparency?

Yes. Transparent areas stay transparent, which is what makes WebP the right replacement for PNG on web pages.

How much smaller will the file be?

For screenshots and illustrations, usually 70 to 90 percent smaller at quality 85. For flat graphics with few colors the gain is smaller but still real. The tool shows both sizes.

Is WebP lossy?

At most qualities, yes, slightly, and invisibly on most graphics. Quality 100 is lossless if every pixel must be kept.

Do browsers show WebP?

All current browsers on desktop and phone.

Can I convert many at once?

Yes. Drop them all and download them together.