[csswg-drafts] `[css-media-5]` - `prefers-reduced-data` question: special behavior when turned off and on post page load? (#9475)

argyleink has just created a new issue for https://github.com/w3c/csswg-drafts:

== `[css-media-5]` - `prefers-reduced-data` question: special behavior when turned off and on post page load? ==
During TAG review (found here https://github.com/w3ctag/design-reviews/issues/705) a question/concern was brought up that should pass through the CSSWG for discussion:

> should the `prefers-reduced-data` media query specify special behavior when users toggle from a low data preference to a high data preference?

**The use case:**  
given a page has loaded and the user was in reduced data mode, then later turns reduced data off, what should happen?
1) we treat the media query like any other where users have control, and reevaluate the page, likely causing downloads
2) add spec prose that prevents automatic reevaluation only when users change their setting from low data to high data post page load; making users explicitly refresh to see the non-reduced data page and thus being in control of additional downloads
3) something else?

**The concern:**  
A user might not expect/want the page to reevaluate, and be surprised when potential MBs of data begin downloading for the non-reduced data page. Maybe they thought they cached it and were good to turn off their reduced data setting and read or browse.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/9475 using your GitHub account


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Received on Monday, 16 October 2023 22:02:08 UTC