PNG is lossless and often large. WebP can shrink it substantially while keeping transparency, which makes it a great choice for web graphics and UI assets.
Conversion is done locally in your browser, so your files are never uploaded.
How to convert PNG to WebP
- Drop your .png files above.
- Set the quality level.
- Download your WebP files (or a ZIP).
Big savings, transparency kept
PNG is lossless and often heavy, especially for photographs or detailed graphics saved as PNG. WebP shrinks those dramatically while preserving the alpha channel, so transparent areas stay transparent. It’s an easy way to make heavy PNG assets web-friendly without losing the see-through background.
Lossy or near-lossless
The quality slider lets you choose. For flat graphics, icons, and logos you can lower it a lot and still look pixel-perfect; for photographs, 75–85 keeps excellent detail at a fraction of the PNG’s size. Either way the file is usually far smaller than the original.
Best for which images
WebP gives the biggest wins on:
Photos or screenshots that were saved as large PNGs.
Web graphics and UI assets where load speed matters.
Transparent images you still want to keep small.
PNG vs WebP at a glance
| PNG | WebP | |
|---|---|---|
| File size | Large (lossless) | Much smaller |
| Transparency | Yes | Yes |
| Quality | Lossless | Lossy or near-lossless |
| Best for | Editing, archival | Fast web delivery |
Frequently asked questions
Does WebP keep PNG transparency?
Yes, WebP supports transparency, so the alpha channel is preserved.
Is WebP smaller than PNG?
Usually much smaller, especially for photographic or detailed images.
Will I lose quality?
WebP can be lossy, but at a high setting the difference is invisible; flat graphics often look identical even at lower settings.
WebP or AVIF for PNGs?
Both beat PNG on size. WebP has slightly wider support; AVIF compresses a touch more. Either is a big upgrade.
Are my files uploaded?
No — conversion runs in your browser.
Can I batch convert?
Yes, and download a ZIP.
Related: PNG to AVIF · WebP to PNG · JPG to WebP