WebP vs PNG
WebP can be lossless with alpha and is often smaller than PNG for the web. PNG remains the interchange format that every editor still handles without thinking.
Ship WebP (or AVIF) to browsers you have tested. Keep PNG as a master for UI assets when lossless editing matters. ConvertPass encodes WebP only when the browser can.
| Topic | WebP | PNG |
|---|---|---|
| Size | Often smaller, even in lossless mode, for many graphics. | Predictable, sometimes bulky. |
| Tooling | Fine in current browsers; some design tools still export PNG first. | Universal. |
| Animation | Animated WebP exists; support is a separate checklist. | APNG is uneven. GIF is the historical default. |
| Metadata | Possible, but canvas export drops it. | Text chunks are a feature and a leak. |
Related tools
- Image converter
Convert images on-device, with honest limits for animation and AVIF support.
- Image compressor
Reduce image weight in the browser and see the new file size before you download.
Related formats
Last reviewed 16 August 2026.