I was told thumb.php is evil (for lack of caching). I'm using special:redirect with the width=640 parameter. Daniel On Sep 4, 2014 5:49 AM, "Jean-Frédéric" <[email protected]> wrote:
> > > The first three we can get from pretty much either API, or extract >>> directly from >>> > a dump file. The latter is eluding us though, for two reasons. One is >>> that a >>> > file, like 30C3_Commons_Machinery_2.jpg, is actually in the /b/ba/ >>> directory - >>> > but where this /b/ba/ comes from (a hash?) is unclear to us now, and >>> it's not >>> > something we find in the dumps - though we can get it from one of the >>> APIs. >>> >> >> Yes, /b/ba ist based on the first two digits of the MD5 hash of the title: >> >> md5( "30C3_Commons_Machinery_2.jpg" ) -> ba253c78d894a80788940a3ca765debb >> >> But this is "arcane knowledge" which nobody should really rely on. The >> canonical >> way would be to use >> >> https://commons.wikimedia.org/wiki/Special:Redirect/file/30C3_Commons_Machinery_2.jpg >> >> Which generates a redirect to >> >> https://upload.wikimedia.org/wikipedia/commons/b/ba/30C3_Commons_Machinery_2.jpg >> >> To get a thumbnail, you can directly manipulate that URL, by inserting >> "thumb/" >> and the desired size in the correct location (maybe Special:Redirect can >> do that >> for you, but I do not know how): >> >> >> https://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/30C3_Commons_Machinery_2.jpg/640px-30C3_Commons_Machinery_2.jpg >> > > If I am not mistaken you can use thumb.php to get the needed thumb? > <https://commons.wikimedia.org/w/thumb.php?f=Example.jpg&width=100> > > (That’s what I used in my CommonsDownloader [1]) > > [1] < > https://github.com/Commonists/CommonsDownloader/blob/master/commonsdownloader/thumbnaildownload.py > > > > Hope that helps, > -- > Jean-Frédéric > > _______________________________________________ > Commons-l mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/commons-l > >
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