Does WebP support progressive or interlaced display?

No, WebP currently does not support progressive or interlaced display like Progressive JPEG or PNG.

Here's why WebP doesn't use this approach:

• Complexity and Resource Usage: Progressive and interlaced decoding require multiple passes through the image data, which can increase CPU and memory usage. This can be especially taxing on slower devices.
• Focus on Efficiency: WebP prioritizes efficient compression and fast decoding for smoother webpage loading

Alternatives for WebP:

• Incremental Decoding: While not technically progressive, WebP uses incremental decoding. This means that the browser can display a partial image as soon as enough data is received, allowing for a smoother user experience on slower connections.
• Serving Different Image Formats: You can leverage techniques like srcset in HTML to offer both WebP for supported browsers and a baseline JPEG for browsers that don't support WebP. This ensures a good user experience for everyone.

Here are some resources for further reading:

• Understanding Progressive JPEG and WebP Formats: https://www.shopify.com/partners/blog/progressive-jpeg-and-webp
• Frequently Asked Questions | WebP - Google for Developers:
  https://developers.google.com/speed/webp