Convert bulky PNGs to compact WebP images without losing transparency. Free in your browser — no sign-up, no watermarks.
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PNG files of screenshots and graphics are often huge. WebP keeps the transparency and the sharp edges while cutting the size dramatically — typically 60–80% smaller. Perfect for web assets, documentation screenshots and UI images.
PNG is a lossless image format that preserves every pixel exactly as it was saved. It supports full alpha transparency, which makes it the standard for logos, icons, screenshots and any graphic that must keep sharp edges and clean text. PNG files are larger than JPG for photos, but they never lose quality no matter how many times they are re-saved.
WebP is a modern image format developed by Google that compresses roughly 25–35% smaller than JPG at the same visual quality, and also supports transparency and animation. It is the default download format on many websites today. All current browsers display WebP, but some older apps, photo editors and printing services still reject it — which is the most common reason to convert it.
| PNG | WebP | |
|---|---|---|
| Type | Raster image | Raster image |
| Compression | Lossless | Lossy or lossless |
| Transparency | Yes (alpha) | Yes |
| Animation | No | Yes |
| Typical use | Logos, screenshots, graphics with text | Web images, downloads from websites |
PNG is the default format for screenshots, diagrams and interface graphics, but it’s a heavy way to publish them. Converting to WebP routinely cuts these images to a third or less of their PNG size while keeping text crisp, because WebP compresses the flat-color regions that dominate screenshots extremely efficiently. Transparency survives the trip too — alpha channels carry straight over.
The place to be careful is fine, single-pixel detail: at aggressive quality settings, hairline table borders and anti-aliased small text can soften slightly. Nudge the quality slider up until artifacts disappear — even at 90+, the WebP is usually far smaller than the source PNG. For documentation sites, knowledge bases and blog posts full of screenshots, this single conversion pass often saves more bandwidth than any other optimization on the page.
Yes — completely free, with no sign-up, no watermarks and no daily quota. Processing happens in this browser, so the practical limit is the memory available on your device.
Yes. Select or drop as many files as you like — each one is converted in sequence with its own progress status, and you can download the results individually or all together as a ZIP archive.
WebP uses lossy compression, so there is a quality/size trade-off you control with the quality slider. At the default 92% the difference is practically invisible while files stay small. For archival-grade copies choose PNG instead.
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