Please use the same quality settings for the Wiktionary favicon as the Wikipedia one, so Firefox can use it for the icon in the search box when you install the opensearch plugin.
Firefox has a size limit of 10kB for the icons (see https://dxr.mozilla.org/mozilla-central/rev/2d7b8b5dd174bd9db5894c6cb770e05f83e95ee3/toolkit/components/search/nsSearchService.js#101 ) Currently, the Wikipedia favicon is 2.7 kB (2,734 bytes) while the Wiktionary one is 15.1 kB (15,086 bytes). Just opening them in GIMP and re-exporting them, it appears Wikipedia is using 8 bpp, 1-bit alpha, 256-slot palette, without compression, while Wiktionary is using 32 bpp, 8-bit alpha, no palette, without compression. Just exporting Wikitionary's with the same setting as Wikipedia's gets it to 7.4 kB (7,406 bytes), safely under the limit.
The only change is to the alpha fade in the corners, but it's not really noticeable without enlarging, and Wikipedia's doesn't have it (might need to manually adjust them though).
github reckons it's 14.7 KB
But yeah, wikipedia's is i under 3KB, so something is definitely wrong here. And we should fix all three of the wiktionary ones in one go
I would also suggest we look at, and fix most of them... Only wikipedia and wikiversities look to be small...
reedy@ubuntu64-web-esxi:~/git/operations/mediawiki-config/static/favicon$ du -h * 16K arbcom_dewiki.ico 16K black-globe.ico 16K commons.ico 16K community.ico 16K incubator.ico 16K internal.ico 16K labs.ico 16K mediawiki.ico 16K office.ico 16K piece.ico 16K spcom.ico 16K testwikidata.ico 16K toollabs.ico 16K usability.ico 16K wikibooks.ico 16K wikidata.ico 16K wikimania.ico 16K wikinews.ico 4.0K wikipedia.ico 16K wikiquote.ico 16K wikisource.ico 16K wikispecies.ico 16K wikitech.ico 4.0K wikiversity.ico 16K wikivoyage.ico 52K wiktionary 16K wmf.ico