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Pre-render certain thumbnail sizes on upload
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This is planned for better support of MediaViewer, but there doesn't seem to be any ticket about it yet.

Thumbnail generation is slow; for MediaViewer, thumbnails which have not been rendered yet take almost twice as long to load for the average user (an extra 700ms). If the original file is very large, thumbnail generation can take ridiculously long (although bug 67525 will address that). To provide good user experience, we need pre-generated thumbnails in some standard sizes, which frontend applications can rely on.

A related, but outdated, RfC:

Version: 1.24rc
Severity: enhancement
See Also:



Event Timeline

bzimport raised the priority of this task from to Medium.Nov 22 2014, 3:28 AM
bzimport set Reference to bz67698.
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Tgr created this task.Jul 8 2014, 10:51 PM

Change 157157 had a related patch set uploaded by Gergő Tisza:
Add ability to pre-render thumbnails at upload time

Tgr added a comment.Dec 4 2014, 11:29 PM

Once this becomes final, the documentation at (and probably somewhere on, maybe ?) should be updated.

Jdforrester-WMF moved this task from Untriaged to Backlog on the Multimedia board.Sep 4 2015, 6:35 PM
Restricted Application added subscribers: Steinsplitter, Matanya, Aklapper. · View Herald TranscriptSep 4 2015, 6:35 PM
Gilles closed this task as Resolved.Sep 7 2015, 5:52 AM
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