PageSpeeds low ranks for galleria.io images
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Hugo Torres
Sep 17, 2017, 12:25:54 AM9/17/17
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In a site having galleria.io images, pagespeed ranks the images as bad and resizable because only one is shown in real size at a time.
Carlos Lizaga Anadon
Sep 18, 2017, 11:04:55 AM9/18/17
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Hi Hugo,
You're rendering as thumbnails images [x]s like 5s on <img> containers that are 80 × 100 pixels while the image has 220 × 274 pixels.
Basically you're placing an oversized image into the document for a downscale.
It is only complaining about one m image which is the 3m because it can still be compressed:
That is a at least a 10% size reduction with no aggressive compression so it could be even more (like 15-17%).
What is the problem with pagespeed's algorithm?
Best,
Carlos.
You're rendering as thumbnails images [x]s like 5s on <img> containers that are 80 × 100 pixels while the image has 220 × 274 pixels.
Basically you're placing an oversized image into the document for a downscale.
It is only complaining about one m image which is the 3m because it can still be compressed:
$ guetzli --verbose ~/Desktop/3m.jpg ~/Desktop/3m-guetzli.jpg
ls -lh ~/Desktop/3m*
-rw-r--r-- 1 carlos.lizaga xxx\xxx 77K 18 sep 17:01 /Users/carlos.lizaga/Desktop/3m-guetzli.jpg
-rw-r--r--@ 1 carlos.lizaga xxx\xxx 85K 18 sep 17:00 /Users/carlos.lizaga/Desktop/3m.jpg
That is a at least a 10% size reduction with no aggressive compression so it could be even more (like 15-17%).
What is the problem with pagespeed's algorithm?
Best,
Carlos.
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