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en.Wikivoyage: increase default image thumb size to 270 and change user prefs thumb size choices
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Description

Author: rogerchrisman

Description:
For English Wikivoyage please:

  1. Change user preferences image thumbnail size choices to 120px, 150px, 180px, 220px, 270px, 300px, 350px, 400px, 450px and 500px.

Related docs: http://www.mediawiki.org/wiki/Manual:$wgThumbLimits

  1. And increase default image thumbnail size on en.Wikivoyage to 270px.

Related docs:

Local discussion and consensus is at http://en.wikivoyage.org/wiki/Wikivoyage_talk:Image_policy#Proposal_to_change_default_thumbnail_size

Thank you


Version: wmf-deployment
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=41712

Details

Reference
bz47332

Event Timeline

bzimport raised the priority of this task from to Medium.Nov 22 2014, 1:14 AM
bzimport set Reference to bz47332.
bzimport added a subscriber: Unknown Object (MLST).

Oh, thanks for posting the link, Dereckson; I assumed it would be pretty easy for us to set a different thumbnail size for a wiki.

Quoting hashar from bug 41712, comment 14:

It is not reasonable for us to handle different thumbnail sizes per wiki for
the following reasons:
  - we keep thumbnails forever currently, the more we have the more disk space
  it takes
  - different sizes lower the cache hit rate which in turns cause...
  - ... a CPU cost on the cluster to generate a thumbnail, varying the sizes
  cause more and more thumbnails generations
  - whenever a file is updated, we have to purge each thumbnails ever
  generated.

I'm afraid this is a WONTFIX until decided otherwise, per bug 27839 and bug 41712, then. (I'm also adding this to [[m:Limits to configuration changes]] for future reference; also un-assigning myself from this bug.)

We are all sorry about the wontfix :( That simply does not scale for us right now but we might end up with a nice solution one day.

Related URL: https://gerrit.wikimedia.org/r/59739 (Gerrit Change Ie8da7ea68dc3e2518d5f84e085992ae9f2f0a86e)

https://gerrit.wikimedia.org/r/59739 (Gerrit Change Ie8da7ea68dc3e2518d5f84e085992ae9f2f0a86e) | change ABANDONED [by Dzahn]

Since this is already marked WONTFIX I'm not sure if this is the right place to comment, but English Wikivoyage is trying to standardize on a larger thumbnail size (270px), which seems more appropriate for a travel guide where images play a larger role in illustrating the article content.

We're trying to figure out if we need to run a bot to standardize image sizes, so before doing so I'd like to better understand the logic behind not changing the default thumbnail size and whether or not that option really is a non-starter. If the concern is performance, wouldn't the same performance issue be encountered whether the default thumbnail size is "270px" or whether we manually change all images to be "thumb|270px"? If so, wouldn't it make more sense to change the default thumbnail size so that users who add new images with the "thumb" syntax don't have that image generated twice (once when they first add it, and again when it gets resized to the standard sizing)? That would have the added benefit of making our image syntax simpler since we wouldn't need to manually specify sizes for each and every image.