https://bugzilla.wikimedia.org/show_bug.cgi?id=51449

Nemo <federicol...@tiscali.it> changed:

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--- Comment #1 from Nemo <federicol...@tiscali.it> ---
Are there default options that we can rely upon instead of guessing best
settings on our own? It seems 7.36.0 added something that may of use,
optimize_coding option; and 7.38 some more.
http://libvips.blogspot.it/2013/11/tips-and-tricks-for-vipsthumbnail.html has
some info

«$ vipsthumbnail 42-32157534.jpg -o x.jpg[optimize_coding,strip]
$ ls -l x.jpg
-rw-r--r-- 1 john john 3600 Nov 12 21:27 x.jpg
Tiny! About half the size of where we started with no quality loss.»

(Compared to itself, not to imagemagick.)

Note that thumb weight is now a concern, especially on mobile which is an
increasing portion of Wikimedia traffic:
https://www.mediawiki.org/wiki/Talk:Requests_for_comment/Reducing_image_quality_for_mobile#Fundamentals

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