Tooooolbox
100% private — no upload
PNG files are heavy — often the single biggest asset on a web page. WebP keeps the transparency PNG is known for while cutting file size by 30–70%. Drop your PNG files below; the conversion runs entirely in your browser.
PNG, JPG, GIF, WebP, HEIC up to 50MB per file
Choose filesWebP has both a lossless and a lossy mode, and the choice matters more here than in most conversions. Lossless WebP keeps every pixel exactly as PNG does while still coming out roughly 25% smaller — a free saving with no downside, ideal for logos, icons and UI assets that must stay crisp.
Lossy WebP goes much further, commonly 60–80% smaller than the source PNG, at the cost of discarding some information. For photographs stored as PNG — a common and expensive mistake — this is the setting that transforms the file, turning a 4MB PNG into a few hundred kilobytes with no visible difference.
Unlike JPEG, WebP has a full 8-bit alpha channel, so transparent and semi-transparent areas survive conversion exactly. Soft drop shadows, anti-aliased curves and faded edges all keep their smooth gradation instead of picking up the hard fringe you get when flattening onto a solid background.
That is what makes WebP a genuine replacement for PNG rather than a compromise. You keep the transparency that forced you to use PNG in the first place, and you drop most of the file size that came with it — which is why it has become the default choice for web graphics.
Yes — WebP fully supports alpha transparency, in both lossy and lossless modes. Logos, icons and UI graphics keep their transparent backgrounds after conversion.
Lossless WebP is typically 25–35% smaller than PNG. Lossy WebP at 85% quality can be 60–80% smaller — for most web graphics the difference is invisible.
For screenshots, logos and graphics with text, lossy WebP at 85–90% usually looks identical and saves far more. Reserve lossless for pixel-art or images you'll edit again later.
Yes. Image weight directly affects Largest Contentful Paint, a Core Web Vitals metric used by Google's ranking systems. Replacing large PNGs with WebP is one of the highest-impact page speed fixes.