convertallfiles.app
Image converter

Convert PNG to WebP

PNG's lossless DEFLATE compression keeps pixels perfect but makes websites heavy — a hero image or logo exported as PNG can weigh several megabytes. WebP is the modern replacement: it keeps the alpha channel PNG is loved for while typically cutting file size by a quarter to a third (and far more with lossy encoding). This converter re-encodes your PNG as WebP inside your browser, transparency intact, so your pages get lighter without a server ever seeing the image.

Drop your file here or click to browse

.png — up to 200 MB. Processed locally; never uploaded.

How to convert PNG to WebP

  1. Drop the .png file onto the box above, or click to browse.
  2. The PNG header signature is verified before conversion.
  3. Pick a quality — 85% is a strong default for web images; go higher for crisp graphics.
  4. Click Convert. The image is re-encoded as WebP on your device.
  5. Download the .webp and reference it from your site — every modern browser displays it.

Frequently asked questions

Does WebP support transparency like PNG?

Yes — both lossy (VP8) and lossless (VP8L) WebP carry an 8-bit alpha channel. Your transparent logos and icons survive the conversion intact.

How much smaller is WebP than PNG?

Google's figures put lossless WebP at about 26% smaller than PNG; with lossy WebP at 85% quality the savings on web graphics are often 60–80%. Either way, every current browser (Chrome, Firefox, Safari 14+, Edge) displays it.

Will it work in older browsers?

WebP is safe for the open web today — global support is above 96%. If you must serve truly ancient browsers, keep the PNG as a <picture> fallback.

Is the image sent to a server for conversion?

No. The encoder runs in a Web Worker inside your browser tab. Nothing is uploaded, which also makes the conversion instant on a fast machine.