https://bugzilla.wikimedia.org/show_bug.cgi?id=28135

           Summary: Review and deploy VipsScaler extension
           Product: Wikimedia
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: Normal
         Component: Extension setup
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected]
        Depends on: 25990


Review and deploy the VipsScaler extension on Wikimedia so that large PNGs can
be properly scaled. The VipsScaler supports conditional scaling, so it is
possible to configure it to scale only images that match a certain condition
(i.e. area > 12.5M)

Such a condition would look like:

$wgVipsConditions[] = array( 'mimeType' => 'image/png', 'minArea' => 12.5e6 );

Note that a the development version 7.25 needs to be installed on the image
scalers because older versions do not handle certain PNGs properly. 

Unfortunately there are a lot of dependent phase3 revisions in BitmapHandler,
so this can probably not be done until deployment of 1.18.

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