The favicon introduced by https://gerrit.wikimedia.org/r/#/c/82119/ for bug 53653 is slightly bigger: Bin 4286 -> 7886 bytes and seems to include 3 icons:
docroot/bits/favicon/wikivoyage.ico: MS Windows icon resource - 3 icons, 16x16, 256-colors
That used to only ship 1 icon:
git checkout d6cdbbb^
$ file docroot/bits/favicon/wikivoyage.ico
docroot/bits/favicon/wikivoyage.ico: MS Windows icon resource - 1 icon
Looking at our favicons, there are several of them providing more than one icon. I am wondering whether it is really needed.
$ find . -name '*.ico' -type f -exec file {} \;
./docroot/bits/favicon/black-globe.ico: MS Windows icon resource - 3 icons, 48x48, 256-colors
./docroot/bits/favicon/chapcom.ico: MS Windows icon resource - 1 icon
./docroot/bits/favicon/commons.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/community.ico: MS Windows icon resource - 4 icons, 32x32, 256-colors
./docroot/bits/favicon/incubator.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/internal.ico: MS Windows icon resource - 1 icon
./docroot/bits/favicon/labs.ico: MS Windows icon resource - 3 icons, 16x16, 256-colors
./docroot/bits/favicon/mediawiki.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/office.ico: MS Windows icon resource - 4 icons, 16x16, 256-colors
./docroot/bits/favicon/piece.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/spcom.ico: MS Windows icon resource - 1 icon
./docroot/bits/favicon/testwikidata.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/toollabs.ico: MS Windows icon resource - 3 icons, 16x16, 256-colors
./docroot/bits/favicon/usability.ico: MS Windows icon resource - 3 icons, 48x48, 256-colors
./docroot/bits/favicon/wikibooks.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/wikidata.ico: MS Windows icon resource - 2 icons, 16x16, 16-colors
./docroot/bits/favicon/wikimania.ico: MS Windows icon resource - 1 icon
./docroot/bits/favicon/wikinews.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/wikipedia.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/wikiquote.ico: MS Windows icon resource - 1 icon
./docroot/bits/favicon/wikisource.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/wikispecies.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/wikiversity.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/wikivoyage.ico: MS Windows icon resource - 3 icons, 16x16, 256-colors
./docroot/bits/favicon/wiktionary/en.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/bits/favicon/wiktionary/si.ico: MS Windows icon resource - 1 icon
./docroot/bits/favicon/wmf.ico: MS Windows icon resource - 2 icons, 16x16, 256-colors
./docroot/press/favicon.ico: MS Windows icon resource - 1 icon
./docroot/test/favicon4.ico: MS Windows icon resource - 3 icons, 48x48, 256-colors
./docroot/ukwikimedia/favicon.ico: MS Windows icon resource - 1 icon
Version: wmf-deployment
Severity: minor