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Progressive JPEGs
06-06-2013, 08:35 AM (This post was last modified: 06-06-2013 12:02 PM by GreenGecko.)
Post: #1
Progressive JPEGs
Been working in tandem with ngx_pagespeed to get a new site tuned, and am a bit annoyed seeing that big old F underneath the progressive heading.

Any chance that you can mimic the pagespeed functionality of ignoring images < 10KB in your scoring?

EDIT. Sorry Patrick, That came over as being far grumpier than I had intended!
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06-06-2013, 08:45 AM
Post: #2
RE: Progressive JPEGs
Yeah, I can see about not including files < 10KB in the overall grade (but still flag them if you go look). Any chance you have a link to a test result just so I can make sure nothing else is going on? I assume there are no larger JPEG's on the page, otherwise they should negate the < 10KB ones.
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06-06-2013, 10:28 AM
Post: #3
RE: Progressive JPEGs
http://www.webpagetest.org/result/130605_Q8_1MHC/

(not my code lol)
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06-06-2013, 11:59 PM
Post: #4
RE: Progressive JPEGs
The vast majority of those are over 30 KB: http://www.webpagetest.org/result/130605...ssive_jpeg

It looks like it is mostly meta-data with a bunch of stuff from the Camera and Photoshop: http://www.webpagetest.org/jpeginfo/jpeg...7278-1.jpg
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06-07-2013, 12:01 AM
Post: #5
RE: Progressive JPEGs
Oh, and for added measure, they have thumbnails embedded in the thumbnails ;-)

Better lossless optimizations that can strip out most of the meta-data but maintain copyright (so it is safe to apply universally) is next on my list to nail down.
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06-07-2013, 06:24 AM
Post: #6
RE: Progressive JPEGs
ok, it is now only warning for and grading JPEGs > 10KB
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