That 2 MB logo PNG is slowing your whole site down. Drop it in here and get a WebP back that's up to 70% lighter — with the transparent background pixel-for-pixel the same. And since it all happens in your browser, your file never goes anywhere.
For years, PNG was the only format you could trust with a transparent background. The trade-off was always the same: keep the transparency, carry the weight. PNG stores every pixel's full color data — even the parts your visitors never notice — which is why a simple logo can easily weigh 2 or 3 MB.
WebP splits the problem in two. The color information gets compressed smartly (the lossy part), while the transparency map — the part that keeps your edges clean on any background — is preserved exactly. That's how a file ends up 60–75% lighter while looking identical on your page. Sharp logos, crisp cutouts, no white boxes where transparency used to be.
The browser loads your file into memory and checks every pixel for transparency — all on your device, nothing sent anywhere.
Colors get compressed using your chosen setting, while the transparency layer is handled separately so edges stay clean — no halos, no jagged cutouts.
The finished WebP is packaged and offered for download straight from your browser — ready to swap into your website right away.
| Format Mode | Transparency | Typical File Size | Best For |
|---|---|---|---|
| WebP (Smaller File) | Full 8-bit Alpha | 25% – 35% of PNG | Product cutouts, web illustrations |
| WebP (Pixel-Perfect) | Full 8-bit Alpha | 70% – 75% of PNG | Brand logos, sharp line art |
| Standard PNG | Full 8-bit Alpha | Baseline (100%) | Keeping original master files |
Yes — that's the whole point of this tool. WebP handles transparency natively, and the tool checks your PNG for an alpha channel before converting. Your logo will sit cleanly on any background color, exactly like the original.
Go Pixel-Perfect (100%) when the graphic has razor-sharp details — thin line icons, small text, monochrome signatures — where even a hint of softening would show. For everything else with transparency, Smaller File is the better deal: dramatically lighter and visually identical in normal use.
PNG is a lossless format from the 1990s. It stores every pixel's complete color information without any modern prediction tricks, so files routinely end up three to five times heavier than a WebP showing the same image. Great for archiving, rough for websites.
Completely. Everything runs inside your browser using the HTML5 Canvas API. Unlike cloud converters that take custody of your file for a moment, here your image never leaves your device — close the tab and it's like it was never anywhere else.