PNG to WebP
Convert PNG images to WebP — usually the smallest of the three, with transparency support.
- Your files never leave your device
- Free, no sign-up
- No watermark, no file limit
About this tool
This is the conversion with the biggest payoff for a website: WebP keeps the transparency that PNG has, while producing a far smaller file. A logo or screenshot can drop by 60–80% with no visible change.
Your images never leave your device. Each file is decoded by your browser, drawn to a canvas and re-encoded in the new format in memory. Nothing is uploaded, which matters when the image is an ID document, a signature or a private photograph.
How to use this tool
- Add your PNG images.
- Leave transparency enabled — WebP keeps it.
- Set the quality: 85% for photographs, 95% for logos and sharp-edged graphics.
- Press Convert to WebP.
What the PNG to WebP does
PNG and WebP both support transparency, so nothing is lost structurally in this conversion. The difference is efficiency — WebP compresses much harder, and for flat-colour images such as logos, icons and screenshots the saving is dramatic.
Because PNG is lossless and WebP here is not, there is some loss. At 90% quality it is invisible for photographs; for a logo with hard edges, use 95% or higher.
Typical savings
PNG → WebP, transparency preserved throughout:
Logo, flat colour 450 KB → 60 KB (−87%)
UI screenshot 2.4 MB → 380 KB (−84%)
Photograph 5.1 MB → 620 KB (−88%)
The saving is large because PNG stores every pixel
exactly, and almost no image needs that.
Use 95%+ for logos and icons: hard edges are where
lossy compression shows first.
Worked example
Example: site assets
| Input | 8 PNG logos and icons, 3.1 MB |
| Quality | 95%, transparency kept |
| Output | 8 WebP files, about 480 KB |
| Saving | roughly 85% |
Transparency intact throughout, so they still sit on any background.
What your result means
Transparency survives — this is the main reason to choose WebP over JPG here.
Savings of 60–85% are normal.
If edges look soft on a logo, raise the quality to 95–100%.
Things to watch out for
- Ideal for websites. Not suitable for government uploads, which generally want JPG or PNG.
- Use 95% or higher for logos, icons and anything with sharp edges or text.
- Keep the PNG as your master copy — WebP here is lossy and cannot be turned back into the original.
- Deselect "keep transparency" only if you specifically want a solid background.
- For print, keep the PNG. WebP is a web format.
Limitations of this tool
- The WebP encode is lossy, so the PNG remains the higher-fidelity file.
- Some non-browser software and upload forms reject WebP.
- Animated PNG produces a single frame.
- Images are capped at 8000 px on the longest side.
Frequently asked questions
Does WebP keep PNG transparency?
Yes. WebP supports transparency, and it is preserved by default. That is the main advantage over converting to JPG.
How much smaller will it be?
Commonly 60–85% smaller. Flat-colour images such as logos and screenshots save the most.
Is this lossless?
No, this encodes lossy WebP. At 95% the difference is invisible even on logos. Keep the PNG as your master.
Should I use WebP for my website?
Yes, for photographs and graphics. Every current browser supports it and pages load noticeably faster on mobile connections.