[wp-trac] [WordPress Trac] #26765: Twenty Ten and Eleven: reduce JPG file size even more

[WordPress Trac]

#26765: Twenty Ten and Eleven: reduce JPG file size even more
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 Reporter:  lancewillett             |       Owner:
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  3.9
Component:  Bundled Theme            |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  needs-patch 2nd-opinion  |
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Comment (by GaryJ):

 Of all the header images in both themes, the berries image seemed to have
 the highest compression (saving about 25% of bytes) when using JPEGmini
 Pro. When flicking between the two, there does seem to be a slight blur on
 the already out-of-focus picture, which is the first time I've noticed any
 visual discrepancy, but looking at the new image alone, I don't think
 anyone would be able to spot the difference if they weren't looking for
 it.

 Other images reduced by a factor of 1.0 to 1.2, so they were already
 fairly optimised. For such a relatively small total space saving, compared
 to the overall size of WP download, and of individual images (of which
 only one will generally be used at a time anyway), it may be that the
 slight blurring is enough to not bother with the change.

 If the original photos were exported at 100 JPEG quality, and then run
 through JPEGmini, you might get better savings for better quality. One of
 the advantages of JPEGmini is that it programatically decides on the
 resulting quality, instead of a designer who just has it set to a default
 of 80, for instance.

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Ticket URL: <https://core.trac.wordpress.org/ticket/26765#comment:1>
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