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Opened 9 years ago

Closed 9 years ago

#26765 closed defect (bug) (wontfix)

Twenty Ten and Eleven: reduce JPG file size even more

Reported by: lancewillett's profile lancewillett Owned by:
Milestone: Priority: normal
Severity: normal Version:
Component: Bundled Theme Keywords:
Focuses: Cc:


Reported via Twitter:

If you run all the 2010 and 2011 theme images through you'll save about 80kb with no visual differences.

Worth testing that tool out? Or seeing if we can just use a normal workflow (Photoshop save for web) to achieve the same effect without losing quality.

Attachments (2)

berries.jpg (59.1 KB) - added by GaryJ 9 years ago.
Original, currently in TwentyTen
berries.2.jpg (44.0 KB) - added by GaryJ 9 years ago.
After compression with JPEGmini

Download all attachments as: .zip

Change History (5)

9 years ago

Original, currently in TwentyTen

9 years ago

After compression with JPEGmini

#1 follow-up: @GaryJ
9 years ago

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.

#2 in reply to: ↑ 1 @obenland
9 years ago

  • Keywords close added; 2nd-opinion removed

Replying to GaryJ:

For such a relatively small total space saving, […] it may be that the slight blurring is enough to not bother with the change.

I agree. :) I think it is worth to try the tool in future themes though, if they come with default images. Nice find!

#3 @lancewillett
9 years ago

  • Keywords needs-patch close removed
  • Milestone 3.9 deleted
  • Resolution set to wontfix
  • Status changed from new to closed
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