Keep full alpha transparency while reducing file sizes by up to 50% by converting PNG images to WebP locally.
Drop your transparent or opaque PNG images into the tool.
Choose the compression quality slider for optimal balance.
Download your WebP images with full transparency preserved.
Alpha channels and transparent cutouts remain 100% intact.
Cut PNG file sizes in half while preserving crisp edges.
Instant local conversion on your device hardware.
Unlike JPG, WebP fully supports transparent backgrounds while offering compression that outperforms PNG by 25% to 50%. Our client-side PNG to WebP converter preserves full alpha transparency while drastically shrinking your asset sizes for faster website performance.
Yes! WebP has native support for 8-bit alpha channel transparency just like PNG, but with significantly smaller file size.
You might also find these complementary free tools useful:
Convert PNG images to standard JPG format directly in your browser with customizable background color and quality controls.
Shrink image file sizes without sacrificing quality by converting JPG and JPEG photos to modern WebP format locally.
Reduce image file size by up to 85% while preserving visual clarity directly in your browser without uploading your photos.
Convert iPhone HEIC photos into lightweight, next-generation WebP images for websites and apps with zero server uploads.