Convert PNG to WebP
This is the best conversion on this site for anyone publishing images to the web. WebP keeps the alpha channel that makes PNG useful for logos and icons, while producing files a fraction of the size. Unlike converting PNG to JPG, you give up nothing structural.
Files are decoded and re-encoded inside this browser tab. Nothing is uploaded — you can disconnect from the internet after this page loads and conversion still works.
Everything runs in your browser. Drop in a folder of assets and take the batch back as a ZIP.
How to convert PNG to WebP
- Drag your PNG files onto the box above, or click it to browse.
- Each file converts in place — no upload, no queue.
- Download them one by one, or grab the whole batch as a ZIP.
Why this beats PNG to JPG for web use
Converting a PNG to JPG shrinks the file but destroys transparency and softens text. WebP does neither. It supports a full alpha channel, so a cut-out logo stays cut out, and its compression handles sharp edges far better than JPEG does, so screenshots and diagrams stay legible.
The size reduction is substantial. A PNG screenshot that weighs several hundred kilobytes routinely drops to a few tens of kilobytes as WebP with no visible difference. For flat graphics the saving is often even larger, because WebP has a lossless mode that outperforms PNG on exactly the content PNG was designed for.
What this does for page speed
Images are usually the heaviest thing on a page, and page weight drives Largest Contentful Paint, which Google uses as a ranking signal. Converting your PNG assets to WebP is among the cheapest performance wins available — no code changes, no build pipeline, just smaller files.
The robust way to deploy them is a picture element with a WebP source and the original PNG in the img tag as a fallback. Browsers that understand WebP take it, and anything that does not falls back silently. That also protects you from the non-browser consumers of your images, like feed readers and email clients.
Where PNG still wins
Keep PNG when the file is leaving the web. Desktop software support for WebP is inconsistent — recent Photoshop, GIMP and the Windows Photos app handle it, but plenty of enterprise and older software does not. Print workflows in particular still expect PNG or TIFF.
Also keep the PNG originals as your masters. WebP conversion at this quality setting is lossy, and you do not want to be re-converting a WebP back and forth later.
Frequently asked questions
Does WebP keep transparency?
Yes. WebP supports a full alpha channel, including partial transparency at anti-aliased edges. This is the main advantage over converting to JPG.
How much smaller will my files be?
It varies with content, but reductions of 60 to 90 percent are common for screenshots and flat graphics. Photographs saved as PNG shrink even more dramatically.
Is the conversion lossless?
No — it runs at quality 0.92, which is visually indistinguishable for almost all content but does discard some data. Keep your PNG originals as masters.
Will WebP work everywhere on my site?
In every current browser, yes. Serve it inside a picture element with a PNG fallback to cover older software, feed readers and email clients.
Are files uploaded to a server?
No. Conversion happens in your browser, which is why there is no queue and no file count limit.