Convert PNG to WebP
Drop PNG files and download WebP at the same dimensions, with transparency kept. PNG is reliable but heavy, especially for photos and detailed graphics. WebP trades that weight for much smaller files while still supporting an alpha channel.
The encode is lossy, tuned for visual quality on the web. The pixels are not identical to the PNG, so for an exact archival copy keep the original. For shipping assets to a site, the size saving is the point.
When WebP helps
- Performance. Replacing heavy PNG assets with WebP lowers page weight.
- Transparent UI. Icons and overlays keep their alpha channel at a fraction of the size.
- Modern stacks. Astro, Next.js, and similar frameworks serve WebP well.
Compatibility note
Current versions of the major browsers render WebP. Older software and some email clients do not, so keep PNG where the file must open anywhere.
Batch and privacy
Add multiple files, convert, and use Download all as ZIP for the whole set. Conversion runs in your browser through Web Workers, in parallel; nothing is uploaded, and metadata is dropped when the image is re-encoded.