WebP keeps the transparency PNG is used for while producing a much smaller file, so it is the better choice for logos, icons and graphics on a web page.
Unlike converting a transparent PNG to JPG — which fills the transparent areas with white — WebP preserves the transparent background intact.
Batch convert a set of graphics at once, entirely on your device, with an optional size cap.
How to use it
Add your PNG graphics, icons or screenshots.
Press Convert — the transparent background is preserved.
Download the smaller files, as a ZIP for a batch.
Supported formats and limits
Input
PNG images
Output
WebP with transparency intact
Typical saving
Often large for flat colour, logos and screenshots
Transparency
Kept — the main reason to choose WebP over JPG
Where it runs
In your browser; nothing uploaded
Not for: Print or archival masters — keep the original PNG for those and use WebP on the web.
Frequently asked questions
Are my files uploaded to a server?
No. This conversion runs entirely inside your browser using your own device’s processing power. The file never leaves your computer or phone, which is why it also works when your connection drops.
Is the transparency kept?
Yes. WebP supports an alpha channel, so transparent areas stay transparent — the main reason to choose it over JPG.
How much smaller will the file be?
For graphics and screenshots the saving is often large, since WebP compresses flat colour and transparency far more efficiently than PNG.