How to convert PNG to WebP
Choose a quality level and inspect the resulting details.
- Add one or more PNG images.
- Set the WebP quality level.
- Convert and check transparency and sharp edges in the result preview.
- Download the WebP results.
Image converters
Convert PNG to WebP online
Convert PNG graphics to adjustable-quality WebP while preserving the alpha channel, then compare the real output size.
No server upload No signup Up to 25 MB per file
Drag files here
You can select multiple files at once.
PNG · Up to 25 MB per fileLocal browser processing — Source files are not sent to our server for conversion.
PNG versus WebP
Both formats can keep transparency, but WebP often stores web graphics more efficiently.
- PNG image
- PNG
- WebP image
- WEBP
- The browser encoder keeps the alpha channel but can change color detail.
- Lower quality may reduce size further but can soften tiny text or edges.
When to publish WebP
Use it for transparent web assets where PNG size is slowing delivery.
- Logos, product cutouts and UI graphics on modern websites.
- Large transparent illustrations or screenshots.
- Responsive image sets for mobile-first pages.
Protect transparent edges
Preview the image over light and dark backgrounds when edge quality matters.
- Use a high quality setting for pixel art, logos or very small text and verify the result.
- Lower quality may suit large illustrations and photographic PNGs.
No image upload required
The PNG is read and converted by your browser on the current device.
- Transparent artwork never enters a server-side processing queue.
- Close the tab to release any remaining temporary data.
FAQ
Frequently asked questions
Will WebP keep PNG transparency?
Yes. Transparent and semi-transparent pixels are preserved.
Is the output lossless?
No lossless switch is provided. The browser WebP encoder uses the selected quality, so verify exact graphics before replacing a PNG.
Why did my WebP become larger?
Very small or already optimized PNG files can occasionally be more compact. Compare the displayed sizes before replacing the original.