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K2 removing compression on uploaded images
- PhoenixOmega
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10 years 1 month ago - 10 years 1 month ago #142560
by PhoenixOmega
K2 removing compression on uploaded images was created by PhoenixOmega
Hello,
I am trying to increase my site's Google Pagespeed Insights score. One of the major gripes it's telling me is that the images that K2 is generating are not losslessly compressed. Here's an exact quote from it:
developers.google.com/speed/pagespeed/insights/
Image optimization is currently a "red" area, which means Google is severely penalizing my score because K2 isn't compressing the images like Google wants.
Now I am using my own tools to compress the original image to 75 kb, but after uploading to K2, the image grows to 127 kb, nearly twice the size of the image that I uploaded, even though it's the same size in pixel dimensions. Attached is the original image that I compressed, and then after that is the image that K2 generated, which as you can see is basically twice the size, which is not good for performance!
http://imgur.com/XljmYzR
http://imgur.com/dcxICBQ
Is there any way to upload an image and prevent K2 from stripping the compression I did?
I am trying to increase my site's Google Pagespeed Insights score. One of the major gripes it's telling me is that the images that K2 is generating are not losslessly compressed. Here's an exact quote from it:
Losslessly compressing /…e/4786bdc09cc2bea7a6f114db8b9ef4d3_L.jpg could save 26.8KiB (28% reduction).
developers.google.com/speed/pagespeed/insights/
Image optimization is currently a "red" area, which means Google is severely penalizing my score because K2 isn't compressing the images like Google wants.
Now I am using my own tools to compress the original image to 75 kb, but after uploading to K2, the image grows to 127 kb, nearly twice the size of the image that I uploaded, even though it's the same size in pixel dimensions. Attached is the original image that I compressed, and then after that is the image that K2 generated, which as you can see is basically twice the size, which is not good for performance!
http://imgur.com/XljmYzR
http://imgur.com/dcxICBQ
Is there any way to upload an image and prevent K2 from stripping the compression I did?
Last edit: 10 years 1 month ago by PhoenixOmega.
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- Joe Campbell
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10 years 1 month ago #142562
by Joe Campbell
Replied by Joe Campbell on topic K2 removing compression on uploaded images
Hi,
All images uploaded through K2 (other than the via the K2 Media Manager) is processed resulting in a change in:
- file name
- file size
- compression
- possibly dimensions (depending on what options you select)
To avoid this you can use image type extra fields. Please view my previous post that further explains:
www.joomlaworks.net/forum/k2-en/40376-solved-keeping-orginal-names-in-my-images#141480
You also may want to investigate the following online image compression tools:
compressor.io/
kraken.io/
I hope this helps,
Joe Campbell
All images uploaded through K2 (other than the via the K2 Media Manager) is processed resulting in a change in:
- file name
- file size
- compression
- possibly dimensions (depending on what options you select)
To avoid this you can use image type extra fields. Please view my previous post that further explains:
www.joomlaworks.net/forum/k2-en/40376-solved-keeping-orginal-names-in-my-images#141480
You also may want to investigate the following online image compression tools:
compressor.io/
kraken.io/
I hope this helps,
Joe Campbell
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- Krikor Boghossian
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10 years 1 month ago #142583
by Krikor Boghossian
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Replied by Krikor Boghossian on topic K2 removing compression on uploaded images
K2 users PHP's GD Library to compress images. Same as WP and other CMS's.
As for not losslessly compressed, this is not possible since .jpg is not a lossless format.
As for not losslessly compressed, this is not possible since .jpg is not a lossless format.
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- PhoenixOmega
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10 years 4 weeks ago #142784
by PhoenixOmega
Replied by PhoenixOmega on topic K2 removing compression on uploaded images
Thank you! This was extremely helpful.
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10 years 4 weeks ago #142795
by Krikor Boghossian
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Please search the forum before posting a new topic :)
Replied by Krikor Boghossian on topic K2 removing compression on uploaded images
You 're welcome.
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- Joe Campbell
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10 years 3 weeks ago #142973
by Joe Campbell
Replied by Joe Campbell on topic K2 removing compression on uploaded images
K2 Power Tip: Stop K2 from Processing Images - K2 Hack
www.joomlaworks.net/forum/k2-en/41036-k2-power-tip-stop-k2-from-processing-images-k2-hack#142970
www.joomlaworks.net/forum/k2-en/41036-k2-power-tip-stop-k2-from-processing-images-k2-hack#142970
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- quebecguitare
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7 years 7 months ago #163918
by quebecguitare
Thank you for your time!
Replied by quebecguitare on topic K2 removing compression on uploaded images
Hi,
I'm also trying to improve my Google PageSpeed Insights Scoring.
Is it a google idea to find those pictures in the cache take the newly compressed pictures provided by Google Google PageSpeed Insights Scoring and crush the old one?
Any better advice?
If this is a good idea, I can't seems to find these pictures in the /media/k2/items/cache folder.
They are either named differently or I don't have the right path.
Thanks
I'm also trying to improve my Google PageSpeed Insights Scoring.
Is it a google idea to find those pictures in the cache take the newly compressed pictures provided by Google Google PageSpeed Insights Scoring and crush the old one?
Any better advice?
If this is a good idea, I can't seems to find these pictures in the /media/k2/items/cache folder.
They are either named differently or I don't have the right path.
Thanks
Possible Optimizations
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 446.6KiB (61% reduction).
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Compressing https://www.quebecguitare.ca/…04828d9f9f9abb89cb004_Genericnsp-712.jpg could save 626B (11% reduction).Thank you for your time!
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- Krikor Boghossian
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7 years 7 months ago #163922
by Krikor Boghossian
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Please search the forum before posting a new topic :)
Replied by Krikor Boghossian on topic K2 removing compression on uploaded images
Hello,
In order to have better compression you need another library apart from PHP's GD library.
This can't be done server-wise since K2 only supports GD.
You can look at libjpeg or pngcrush but these are cli tools mostly.
In order to have better compression you need another library apart from PHP's GD library.
This can't be done server-wise since K2 only supports GD.
You can look at libjpeg or pngcrush but these are cli tools mostly.
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- quebecguitare
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7 years 7 months ago #163926
by quebecguitare
Thank you for your time!
Replied by quebecguitare on topic K2 removing compression on uploaded images
Is it possible to only replace the cache files like I suggested, since most of the content is static anyway?
Thank you for your time!
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7 years 7 months ago #163930
by Krikor Boghossian
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Replied by Krikor Boghossian on topic K2 removing compression on uploaded images
You can download them use an app for image compression like ImageOptim and reupload them
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- quebecguitare
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7 years 7 months ago #163931
by quebecguitare
Thank you for your time!
Replied by quebecguitare on topic K2 removing compression on uploaded images
Do I re upload them in the cache directory?
Could you confirm the path according to what has been crawled in the Google PageSpeed Insights reference I pasted in my first post?
Could you confirm the path according to what has been crawled in the Google PageSpeed Insights reference I pasted in my first post?
Thank you for your time!
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- Joe Campbell
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7 years 7 months ago - 2 years 10 months ago #163932
by Joe Campbell
Replied by Joe Campbell on topic K2 removing compression on uploaded images
Last edit: 2 years 10 months ago by JoomlaWorks.
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7 years 7 months ago #163939
by Krikor Boghossian
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Replied by Krikor Boghossian on topic K2 removing compression on uploaded images
Do you recommend it Joe?
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7 years 7 months ago #163943
by Joe Campbell
Replied by Joe Campbell on topic K2 removing compression on uploaded images
I have yet to use it as a plugin - I used the web app version - I even wrote an article about it:
www.cloudaccess.net/fresh/blog/entry/2017/03/24/top-3-online-image-optimizers.html
www.cloudaccess.net/fresh/blog/entry/2017/03/24/top-3-online-image-optimizers.html
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7 years 7 months ago #163960
by Krikor Boghossian
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Replied by Krikor Boghossian on topic K2 removing compression on uploaded images
Kudos buddy :)
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- Ali
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3 years 8 months ago #179405
by Ali
Replied by Ali on topic K2 removing compression on uploaded images
i see something i picture compress
after convert image with K2 image resolution change to 96
for normal image ( in monitor tv or any digital device ) must or better be 72
more than 72 = no different because monitors not support it
and this change need more size for example
with photoshop
image 600 * 900 with resolution 96 = 150k
image 600 * 900 with resolution 72 = 100k
compress for web 96 = 53k
compress for web 72 = 36k
now this is be nice if in K2 you change something after conver image resolution change to 72 or add some code like other pluging for optimize images then save
after convert image with K2 image resolution change to 96
for normal image ( in monitor tv or any digital device ) must or better be 72
more than 72 = no different because monitors not support it
and this change need more size for example
with photoshop
image 600 * 900 with resolution 96 = 150k
image 600 * 900 with resolution 72 = 100k
compress for web 96 = 53k
compress for web 72 = 36k
now this is be nice if in K2 you change something after conver image resolution change to 72 or add some code like other pluging for optimize images then save
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3 years 7 months ago #179451
by JoomlaWorks
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Replied by JoomlaWorks on topic K2 removing compression on uploaded images
There is a CLI script for that: github.com/getk2/rebuildK2imageCache
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