[Commentor] LC-319 Ian Jacobs [Working Group decision] We keep this best practice as it is a classical problem in mobile web design and want to insist on this type of practical issue. On the 2nd point, we've included discussion on downloading items (under link_target_format). [Commentor reply] yes [Comment] 
* The first sentence of the second point here can be generalized to be "don't do things that the device can't handle." Because I don't think that is known in all cases, I suggest you delete the first sentence. Perhaps rephrase the point in terms of the default delivery context: "Very large or high-resolution graphics are unlikely to achieve their desired goal when rendered on devices with small screens. Avoid them unless there is no other way to provide the information in question." * In some cases, people may wish to download images for viewing on another device (e.g., I store something on my phone then view it on my desktop computer). You may wish to remind the author of that scenario.