Drop PNG files here

or choose them from your device, or paste with Ctrl+V. Nothing leaves your browser.

Convert a PNG to WebP for a smaller file

WebP was designed to replace both PNG and JPG on the web, and it usually wins on size: a WebP is often 25–35% smaller than the equivalent PNG while keeping full transparency. If you're optimising a site or an app's assets, converting PNGs to WebP is one of the easiest bandwidth savings there is.

You can convert losslessly — a perfect copy at a smaller size — or turn the quality down for an even smaller lossy WebP that still supports transparency, which JPG never could.

What this does — and what it doesn't

  • Very old browsers and some desktop software don't open WebP. It's ideal for the web, but if a recipient needs maximum compatibility, JPG or PNG is the safer choice.
  • Lossy WebP, like JPG, discards some detail to save space; use a higher quality setting for images with sharp text or edges.

Related conversions

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PNG to WebP — frequently asked questions

Is WebP smaller than PNG?
Usually noticeably — often 25–35% smaller for the same image, and more if you allow lossy compression. It keeps transparency either way, which is why it's a strong replacement for PNG on the web.
Does WebP keep transparency?
Yes, both lossless and lossy WebP support a full alpha channel, so transparent PNGs stay transparent after conversion.
Can I convert several images at once?
Yes. Drop or choose as many files as you like: they are all converted with the same settings, you see each result's size before downloading, and Download all gives you one ZIP. To shrink files without changing their format, the Image Compressor is the better fit.
Are my images uploaded anywhere?
No. The conversion runs entirely in your browser using the canvas API and, for some formats, WebAssembly — the image never leaves your device. Most conversions keep working with the internet switched off once the page has loaded. A few (HEIC, TIFF, AVIF and PNG to SVG) download a helper file from this site the first time you use them; if you are offline at that moment you are told so, not blamed for a broken file. There is no upload endpoint to send anything to.
Is it really free?
Yes — no account, no watermark, no daily limit, and no paid step at download. It's free because there's no server doing the work, so it costs us almost nothing to run.

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