Hi,<p>Based on [1], it seems like at least 95% of web users support WebP as an image format.<p>Is it time to drop support for legacy image formats (PNG, JPEG), or should I still provide them as alternatives (using <source>)?<p>--<p>[1] https://caniuse.com/webp
The thing that holds me back is that WebP isn't supported on iOS 12. I know it's miniscule but there are still iPad Air 1 and iPhone 6 etc in service. I don't want to switch until I no longer need a fallback JPEG.
I provide both. Webp by default, and the original format for others. Like duffyjp, I maintain support for iOS 12. I don't find it reasonable for images or text not to load on those devices.
As much as I love the idea of WebP, it hardly seems like it's going to replace jpg, png, or gif in full swing. WebP is great to ensure your image is optimized to the fullest, but I'm not sure too many people really care about the few extra KB a JPG might have. The only time it may matter is when you have a GIF and WebP can reduce it by several MB.