[QA] resizing big images will get faster next week

Sumana Harihareswara sumanah at wikimedia.org
Fri Jul 19 17:38:18 UTC 2013


On 07/12/2013 07:59 PM, Sumana Harihareswara wrote:
> Thursday July 18th, we're going to deploy something new on the sites:
> VipsScaler - https://www.mediawiki.org/wiki/Extension:VipsScaler .
> 
> Upside: Resizing big images will be faster and more reliable, leading to
> fewer errors -- no matter whether you get a different size by clicking
> on a link like "Other resolutions: 320 × 239 pixels" or hand-editing the
> filename to
> https://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Thompson-Pond-2009.png/1000px-Thompson-Pond-2009.png
> .  Also, right now, there is an "area limit"- we don't let anyone upload
> a PNG to our site that's more than 50 megapixels.  The area limit will
> go away; that should be nice for Wiki Loves Monuments!  (There will
> still be a filesize limit, of bytes).
> 
> Downside: We'll see slight changes in visual quality, and a few images
> might break.  We've already tested this ourselves, but we'd love more
> testing ahead of time to check for bugs so we can fix them early next week.
> 
> There's a test page at https://test2.wikipedia.org/wiki/Special:VipsTest
> that you can use to test this and find bugs before we roll this out on
> Thursday the 18th.  I'm about to notify Commons on-wiki, but I'd
> especially welcome more help liaising with Commons on this.
> 
> Thanks to volunteer Bryan Tong Minh <bryan.tongminh at gmail.com> who wrote
> most of the code, and to WMF's Greg Grossmeier, Jan Gerber, and Tim
> Starling for working on this!

This launch is delayed till we can fix
https://bugzilla.wikimedia.org/show_bug.cgi?id=51370 .  Release Manager
Greg Grossmeier is ill right now but he'll have more information when he
returns to work.  Sorry for the delay.

-- 
Sumana Harihareswara
Engineering Community Manager
Wikimedia Foundation



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