Takis Bouyouris

Hello, again,

One thing that is tricky with solutions that tamper with images is “how” you test them in order to trigger any results at all! Usually, I prefer the webpagetest.org service, as it has a lot more settings than any other of its kind. And, of course, because it is an open solution.

But, yeah, CDNs are a special case in their own right.

Thank you for using our plugin. We will try to do our best to add more features and CDN support in the future!

Cheers,
Takis

Hello, @drdisability,

Thank you for your message!

It seems that your file system is setup in a way that does not allow write permissions to files and directories that the Adaptive Images plugin needs in order to function properly. The issues are:

1. The directory /var/www/wp-content/cache cannot be created. We need to be able to create directories and subdirectories in there, in order to save resized versions of images.

2. The .htaccess file is not writeable. We need to be able to write in it, in order to redirect image requests to the plugin, so that it can handle them.

Is this something you can configure for yourself? If not, then you should consult your hosting provider for assistance.

Let me know how it goes and if i can help any further!

Cheers,
Takis

Hello, my friend,

NginX requires manual changes in its configuration file both when installing and when uninstalling the Adaptive Images plugin. The NginX configuration file cannot be automatically edited by the plugin itself, like the htaccess file in Apache.

So, you need to add the bit of code that you have already added when installing the plugin and then remove that bit of code when uninstalling it, because it is no longer useful.

You can make some tests and test this process if you would like in advance. Other than that it should all work smoothly.

Let me know how it goes!

Cheers,
Takis

Hello, my fiend,

Thank you for your message!

The Adaptive Images plugin can only work with a CDN in an experimental mode. This is briefly explained in the plugin settings page. The reason for this is quite technical and has to do with the way images are being delivered via a CDN (a CDN actually intercepts all image requests and handles them before the WordPress installation).

The experimental mode is enabled by checking the CDN support mode in the plugin settings page. It is experimental in the sense that, in some web page requests, it might not get the chance to resize all images and some of them might be downloaded in their original version. We are still working on this issue and are planning to solve it in future releases.

You are welcome to enable this setting, do your tests and let us know how it worked out!

One important note: if the CDN uses a different subdomain for delivering static assets and, thus, images, then the Adaptive Images plugin cannot work at all and the images will be downloaded in their original versions. This is a very strict case that cannot yet be handled technically in any way.

Also: no issues have been detected in combination with Litespeed and the Litespeed plugin!

Lastly, our tests so far have shown that no additional significant CPU or RAM requirements are necessary due to the usage of the Adaptive Images plugin!

Cheers
Takis

Hello, @alx359,

The settings suggested apply when NginX is used as the main server of your WordPress installation. When NginX is used as a proxy it is not necessary. Apache is configured automatically, because the Adaptive Images plugin can usually write to the htaccess file directly.

In your case NginX is working somehow like a caching server, like a small CDN.This is a tricky situation for the Adaptive Images plugin, because, in certain setups, it has no means of handling the image requests, because NginX intercepts them. For this we have an experimental mode which you can activate by enabling the CDN Support in the Adaptive Images plugin settings page. Perhaps you could check it out and let me know how it works out for you.

If you would like to share your website url with me here, I could also check and see how your images are finally delivered and if the Adaptive Images plugin actually works.

Cheers,
Takis

Hello, @jrp1,

Thank you very much for your comments, I appreciate the feedback!

About webp:

You are probably right. I expect most effort to be required in testing more than integrating. Definitely one of the priorities for future features.

About the thumbnail sizes:

It was a design decision from the beginning to not rely on the rest of the WordPress installation (theme, plugins, tweaks settings) and also to not affect it at all (apart from the inevitable addition to the htaccess file). I wanted to isolate things as much as possible and make the Adaptive Images plugin work as transparently as possible. This does pose a little bit of redundancy theoretically in the image cache, but in practice not so much, because this cache only creates the images necessary and only when they are required and, well, these images are utlimately really small compared to the rest of the WordPress media folder.

Cheers,
Takis

Hello, my friend,

Thank you for the heads-up!

I believe that this issue has to do with the way WAMP has set up the server on localhost. I have never come across such an issue on an online server. And, to be honest, the Adaptive Images features are not so relevant on localhost anyway.

Could you test this in your online environment and see if you can reproduce it in some way? I’d be more than happy to take a look at it there, where the conditions are closer to the real world.

Cheers,
Takis