PNG to WebP, with transparency kept intact
PNG files are honest but heavy. Converting to WebP usually cuts them by 60 to 80 percent while keeping the alpha channel exactly as it was.
- No upload
- No sign-up
- No watermark
- Unlimited files
- 100% local processingRuns in your browser. Files never leave your device.
- No uploads, no queueInstant results, even on large batches.
- No watermarksClean output, yours to use anywhere.
- Blazing fastModern browsers and the Canvas API make it quick.
How to convert PNG to WebP
Drop your PNG files onto the drop zone. Transparent PNGs are fine, and so are batches.
Set the quality. 85 is a good default; raise it to 90 or above for flat graphics and logos.
Convert, then check the size saving shown against each file.
Download individually, or take the whole batch as a ZIP.
Why it runs in your browser
- FastRuns locally at the speed of your own device.
- 100% privateYour files never leave your device. Ever.
- No limitsNo file size caps and no daily quota.
- LighterNo round trip means less data moved for the same result.
What you should know
PNG stores every pixel losslessly, which is exactly right for a logo and exactly wrong for a photograph. A screenshot exported as PNG can easily run to three or four megabytes when the same image as WebP would be a few hundred kilobytes and look identical on screen. On a page with a dozen such images, that difference is the gap between a fast site and a slow one.
The reason people hesitate is transparency. JPEG cannot store an alpha channel, so converting a transparent PNG to JPEG fills the background with black or white and ruins it. WebP does support alpha, at both lossy and lossless settings, so a transparent PNG converts to a transparent WebP with no visible change and a much smaller file.
At quality 85 the difference from the original is not visible at normal viewing size on almost any image. If the PNG is a flat graphic with large areas of solid colour, push the quality higher, to 92 or so, because lossy compression is more noticeable on hard edges than it is on photographic detail.
Questions people ask
Does converting PNG to WebP keep transparency?
Yes. WebP supports an alpha channel, so transparent areas in the PNG stay transparent in the WebP. Nothing is flattened onto a background colour.
How much smaller will my files be?
For photographic PNGs, typically 60 to 80 percent smaller. For flat graphics and logos the saving is smaller, often 30 to 50 percent, because PNG already compresses those efficiently.
Will the quality drop?
WebP at quality 85 is visually lossless for almost all content. If you need a guaranteed pixel-identical result, use quality 100, which produces a larger but still smaller-than-PNG file.
Do all browsers support WebP?
Yes. Chrome, Edge, Firefox and Safari have all supported WebP for years, including on iOS. You no longer need a JPEG or PNG fallback for general web use.
Images are one line item
Compressing them is the cheap half of page speed. If the rest of the site is still slow, or the traffic is not converting once it arrives, that is the part we actually get paid for.
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