Force compression for the images with Pagespeed module

[Abhishek]

Hello,

I am testing Page Speed module on basic Apache 2.4 installation

Not all images are getting compressed/optimized here http://3.91.72.64/ I am specifically looking to optimize 25 MB image on the page. 

Is there a way to force compression?

Am I missing something?

Thank you in advance for looking into this.

-Abhishek

[Longinos]

Hi

Whit the debug filter enabled ( http://3.91.72.64/?PageSpeedFilters=+debug) the MAUIheader.jpeg image get this message:

<!--Uncacheable content, preventing rewriting of http://3.91.72.64/images/MAUIheader.jpeg-->

Disabling pagespeed module ( http://3.91.72.64/?PageSpeed=off) these file don´t have a cache-control header.

Pagespeed need that files have a public cacheable header to work.

The other images have a very short time (like cache-control: max-age=169) so pagespeed need to reoptimize the image everi 169 seconds.

[Abhishek Mohite]

Thank you so much for your reply

I added cache-control header in httpd.conf file as below

<FilesMatch "\.(ico|jpg|jpeg|png|gif|svg|woff|js|css)$">
        Header set Cache-Control "max-age=604800, public"
</FilesMatch>

Following filters are enabled for the PageSpeed module. Since one of the images was 25 MB, I had to increase value for the property ModPagespeedMaxCacheableContentLength and the PageSpeed module seems to be processing this file. Is there a way to compress this huge image to a smaller size and send it to the browser. I also used height and width attributes for the <img> tag here http://3.91.72.64/ and was expecting it to render a smaller image in terms of dimensions and file size but does not seem to be working.

ModPagespeedEnableFilters extend_cache
ModPagespeedEnableFilters inline_images
ModPagespeedEnableFilters collapse_whitespace
ModPagespeedEnableFilters rewrite_images
ModPagespeedEnableFilters recompress_images
ModPagespeedEnableFilters responsive_images,resize_images
ModPagespeedMaxCacheableContentLength 66777216

Thank you for your help.

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Regards,
Abhishek

[Longinos]

Hi

Maybe you can try to use some of these filters:

strip_image_color_profile

strip_image_meta_data

To make the file more flat

And some of those others

resize_images

or

resize_rendered_image_dimensions

https://www.modpagespeed.com/doc/reference-image-optimize#resize_images