For Gecko browsers, ext.math.css forces "display: none" on SVG and makes the MathML visible. It turns out that this is not enough to prevent the SVG images from downloading, as Gabriel noted in https://gerrit.wikimedia.org/r/#/c/165658/ for the PNG fallback.
It seems that there are some CSS tricks to really prevent hidden images to be loaded and we should give them a try:
http://timkadlec.com/2012/04/media-query-asset-downloading-results/
Version: master
Severity: normal
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Resolved | None | T67341 Release Math 2.0 | |||
| Resolved | None | T73929 SVG images should not be loaded when MathML is used | |||
| Resolved | fredw | T73912 Some code cleanup is needed after the removal of the PNG fallback | |||
| Resolved | None | T73748 Display MathML when MathPlayer is installed |
gerritadmin wrote:
Change 166179 had a related patch set uploaded by Frédéric Wang:
WIP - SVG images should not be loaded when MathML is used
gerritadmin wrote:
Change 166179 merged by jenkins-bot:
SVG images should not be loaded when MathML is used