PNG is a great lossless format for editing but a terrible one for publishing: a 1.5 MB PNG screenshot typically drops below 150 KB as WebP at 85% quality, with no visible difference and logos keeping their transparency.
Less weight means faster pages, better Core Web Vitals and less data spent by your users. It is the single highest-impact conversion for any site with screenshots, illustrations or UI images.
How it works
- 1
Drop your PNG files (one or hundreds).
- 2
WebP is preselected as output; tweak quality if you like.
- 3
Download the WebP files individually or as a ZIP.
PNG vs WebP
| PNG | WebP | |
|---|---|---|
| Compression | Lossless (large files) | Lossy or lossless (up to 90% less) |
| Transparency | Yes | Yes |
| Browser support | Universal | Universal since 2020 |
| Best for | Editing and originals | Publishing on the web |
Frequently asked questions
Does WebP keep the PNG’s transparency?
Yes. WebP supports an alpha channel just like PNG, so logos, icons and screenshots with transparent backgrounds convert without losing it.
How much do I save going from PNG to WebP?
For screenshots and graphics, typically 60–90%. For photos mistakenly stored as PNG, savings can exceed 90%.
Do all browsers support WebP?
Yes: Chrome, Firefox, Safari and Edge have supported it for years. Only very old desktop software may struggle — and you can always convert back.
Are my images uploaded to a server?
No. All processing happens inside your browser using the Canvas API: your files never leave your device, there are no upload queues, and the tool even works offline once the page has loaded.