mod_pagespeed working only partially on Wordpress

[Dániel Berkó]

Hi,

I have a Magento and a Wordpress page on my server. I installed mod_pagespeed recently and it seems to work flawlessly on Magento, but some of the modules doesn't seem to work on my Wordpress site. Things like convert_jpeg_to_webp and convert_to_webp_lossless doesn't seem to work while rewrite_javascript work. My Pagespeed.conf: http://pastebin.com/AWRVAFne

I'm slightly puzzled why the same configuration works on one site, but not the other.

[Jeff Kaufman]

Could you post a link to an image that you would expect to be being
converted to webp but isn't?

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[Dániel Berkó]

Sure, this .png for example:

http://www.magentotidehunter.co.uk/blog/wp-content/uploads/2015/09/Pinterest_light.png

[Jeff Kaufman]

That image is strange: without PageSpeed it's being served
Cache-Control: max-age=2592000 but it also looks like it has changed
over time? Specifically, if I fetch:

http://www.magentotidehunter.co.uk/blog/wp-content/uploads/2015/09/Pinterest_light.png

I get a 256x256 image with 4081 bytes. If I fetch:

http://www.magentotidehunter.co.uk/blog/wp-content/uploads/2015/09/Pinterest_light.png?PageSpeed=off

I get a 35x35 image with 1625 bytes. If I fetch:

http://www.magentotidehunter.co.uk/blog/wp-content/uploads/2015/09/Pinterest_light.png?a=b

I get a 35x35 image with 1509 bytes.

So it looks like the image was bigger, you replaced it with a smaller
one, but PageSpeed still has the bigger one cached. If you clear your
PageSpeed cache this should clear up.
https://developers.google.com/speed/pagespeed/module/system#flush_cache

When I fetch http://www.magentotidehunter.co.uk/blog/wp-content/uploads/2015/09/Pinterest_light.png?PageSpeed=off
and link it from some html on my site, when I fetch it from Chrome I
see:

<img src=xtest.png.pagespeed.ic.VQ2XZlFLOI.webp>

This looks right to me.

What does your image link look like in the html?

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[Dániel Berkó]

I flushed the cache by using the following command:

/var/cache/mod_pagespeed/cache.flush

Now the properly sized image is being featured, but the images still won't get converted to .webp

The image link looks like this:

<img class="social_ball_pinterest" title="Pinterest" src="http://www.magentotidehunter.co.uk/blog/wp-content/uploads/2015/09/Pinterest_light.png" alt="" width="35" height="35" />

Would I have to specify the domain for Pagespeed? I went trough the documentation and found the part about Mapping Domains. I wondered if that could be the issue.

I also checked for .htaccess files, but the single one I found in the wordpress folder had nothing inside it in regards to the pagespeed module.

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[Jeff Kaufman]

I found the image in it's context:

http://magentotidehunter.co.uk/blog/2015/09/12336

It has:

<img class=social_ball_pinterest title=Pinterest
src="http://www.magentotidehunter.co.uk/blog/wp-content/uploads/2015/09/Pinterest_light.png"
alt="" width=35 height=35 />

When I append ?PageSpeedFilters=+debug to the url I see:

<!--The preceding resource was not rewritten because its domain
(www.magentotidehunter.co.uk) is not authorized-->

So the problem is that PageSpeed handling a request for
magentotidehunter.co.uk sees something on www.magentotidehunter.co.uk,
and refuses to rewrite it. If these are both yours and refer to the
same server, which I expect they do, then you can fix this by adding:

ModPagespeedDomain www.magentotidehunter.co.uk

to your config.

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>> >
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>

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[Dániel Berkó]

Didn't know about this ?PageSpeedFilters=+debug, its pretty neat. Thank you for your help.

On the slider of the blog we have some images which are delivered from a CDN. I tried appending the debug line above but I saw nothing under Sources.

I've added the following to the configuration file:

ModPagespeedFetchHttps enable

ModPagespeedMapOriginDomain http://scontent.cdninstagram.com https://scontent.cdninstagram.com

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>
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