Would you like to be able to set different values for the importance priority hint depending on Media Queries, for example when images are above or below the fold depending on viewport width?
Apparently, an image whose part above the fold is indeed the largest, but of which only a small part can be seen, can be considered an LCP element, even if another image has a larger part visible... 😭
You can see this for my photography site in this WebPageTest result:
https://www.webpagetest.org/vitals.php?test=230606_BiDcN4_4NJ&run=3&cached=0#lcp
Looks like we will soon have JPEG XL in Safari! 🥳
Do you know good tutorials and/or examples about dealing with responsive images that are fluid horizontaly, but with a fixed height?
Using object-fit: cover; in the CSS is easy, but how can we prevent loading many pixels that will be hidden, without using too many <source> in a <picture>?
Limiting the image density on mobile devices drasticaly improves performance, with no visual loss, so we did it!
I still wish it was much easier than dealing with <picture> and x descriptors for fluid images… 😞
With a <img maxdensity="2.5" …> attribute for example!
If you agree, comment:
https://github.com/whatwg/html/issues/4421
Largest Contentul Paint change in Chrome 112 to ignore low-entropy images
This may result in LCP times increasing, if a low-content background was being painted very early, or if a low-content placeholder was being used…