Drop the PNG file into the box above, set the output format to WebP, and download the result: that is how to convert PNG to WebP on this page, at quality 80 by default, with any transparent background carried straight through to the WebP's alpha channel, no signup needed for files up to 25 MB and batches up to 30 images.
PNG to WebP is one of the few conversions on this page that is not a real compromise. WebP keeps an alpha channel the same way PNG does, so a transparent background survives the conversion completely, something a PNG to JPG conversion cannot do at all, since JPEG has no transparency support. What changes is the file size: PNG has to store every pixel losslessly, so for the full mechanics of why, see the guide to PNG.
A PNG saved from a photo, a screenshot, or a busy graphic often runs several times heavier than it needs to, and WebP's lossy encoding at quality 80 typically cuts that down hard with no visible difference on a photograph. For where WebP sits next to AVIF and where each format wins, see the WebP and AVIF guide.
How to Convert PNG to WebP
Drag the PNG file onto the box above, or click to pick it, and set the output format to WebP before you download. There is nothing to install, so you convert PNG to WebP online without any software. This PNG to WebP converter runs right in your browser. At quality 80 the re-encoded WebP looks the same as the source at normal zoom on a photograph, and EXIF data is stripped the moment the file comes back, no setting to find.
Three defaults do the whole job: quality 80, WebP as the target, EXIF gone. Re-running the same file at a different quality or output format afterward never costs anything extra, and every converted file downloads straight back to your device.
Why Convert Instead of Just Compressing the PNG
Compressing a PNG without changing its format only goes so far, because PNG compression is lossless: it can pack the same pixels more efficiently, but it cannot throw any of them away, so a photographic or gradient-heavy PNG stays heavy no matter how well it gets optimized. Converting to WebP switches to a lossy encoder, the same quality-80 default behind the 497 KB JPG that becomes a 214 KB WebP on this site's own homepage, a 56.9 percent cut. A PNG holding that same kind of photographic content sees savings in the same range once it goes through the same lossy encoder, because the ceiling was never the compression algorithm, it was the format's lossless guarantee. If the file just needs to get smaller and has no hard-edged graphic content to protect, this conversion is close to a free win.
What Happens to Transparency and Hard Edges
Transparency comes through untouched. WebP supports an alpha channel exactly like PNG does, so a logo, icon, or graphic with a transparent background keeps that transparency after conversion, unlike a PNG to JPG conversion, which forces every transparent pixel to a solid color, almost always white. The honest tradeoff shows up on flat graphics with hard edges: text, thin lines, and sharp color boundaries are exactly what a lossy encoder is not built for, since it is tuned to hide loss in the soft gradients of a photograph, not preserve a crisp edge.
At the default quality of 80 that can show up as faint softening or color bleed right at an edge, usually visible only zoomed in, but real on a logo with fine text. A photographic PNG, or a screenshot of a real scene without sharp graphic elements, converts with no visible difference at all.
What an Icon or Screenshot Library Saves at Scale
One file is one thing, a design system or a documentation folder is usually dozens or hundreds of PNGs at once, and the type of PNG changes what the conversion actually buys. A photographic PNG, the kind a camera app or a phone screenshot produces, behaves like the homepage demo: quality 80 on a lossy encoder cuts a big chunk of redundant pixel data, since a lossless format never discarded anything to begin with. A flat-color icon or logo has less redundant detail to start with, so the percentage saved is smaller in absolute terms, even though the transparency comes through exactly the same either way. A screenshot with small text sits in between: quality 80 keeps the text legible, and the file still shrinks, just not as dramatically as a full photograph would.
| Source PNG type | What quality 80 does to size | Transparency in the WebP |
|---|---|---|
| Photographic PNG (camera, screenshot of a photo) | Cuts hard, a similar order to the homepage demo (56.9 percent) | Fully preserved |
| Flat-color icon or logo PNG | Smaller cut in absolute terms, less redundant detail to remove | Fully preserved |
| Screenshot with small text or UI lines | Shrinks meaningfully, text stays legible at quality 80 | Fully preserved |
That last column is the actual point of this conversion over a PNG to JPG one: every row keeps its transparency, where a JPG output would flatten every one of them to a solid background instead.
What This Conversion Costs, and Where the Limits Are
No account needed on this page: up to 25 MB per file, 30 files a batch, as many times as you come back. A free account raises that to 100 images a month with a usage dashboard. For a full asset library or an automated pipeline, Pro is 12 dollars a month flat: 10,000 images, files up to 50 MB, batches of 100, no per-image fee at any volume.
Converting the same file again later, at a different quality or a different output format, never counts against the total twice. Full tier details are on the pricing page, and developers can point their own conversion code at the same engine through the API reference.
| Plan | Per file | Per batch | Monthly cap |
|---|---|---|---|
| No signup | 25 MB | 30 images | none applied |
| Free account | 25 MB | 30 images | 100 images |
| Pro, 12 dollars a month | 50 MB | 100 images | 10,000 images |
What Happens to Your File Afterward
Nothing sticks around. Files run through the browser tool are deleted within an hour, on a cleanup sweep that runs every 15 minutes, and before that the only way to reach one is a signed link that expires in 15 minutes on its own, never a public bucket anyone could browse. Every file also gets its EXIF metadata stripped automatically, the same as any other conversion here, including GPS coordinates, camera model, and timestamp if the original PNG carried any. Nothing uploaded here trains a model or gets looked at by a person.