Category Archives: autoptimize

Warning: Divi purging Autoptimize’s cache!

A heads-up to Autoptimize users who are using Divi (and potentially other Elegant Theme’s themes); as discovered and documented by Chris, Divi purges Autoptimize’s cache every time a page/ post is published (or saved?).

To be clear; there is no reason for the AO cache being cleared at that point as:

  1. A new page/ post does not introduce new CSS/ JS
  2. Even if new CSS/ JS would be added somehow, AO would automatically pick up on that and create new optimized CSS/ JS.

Chris contacted Divi support to get this fixed, so this is in the ticketing queue, but if you’re using Divi and  encounter slower saving of posts/ pages or Autoptimized files mysteriously disappearing then his workaround can help you until ET fix this.

Hide-my-WordPress & Autoptimize compatibility glue

An “Autoptimize Critical CSS“-user saw some weirdness in how the site looked when optimized. The reason for this turned out to be not the critical CSS, but the fact that he used “Hide My WordPress Pro”, a plugin that changes well-known paths in WordPress URL’s to other paths (e.g. /wp-content/plugins -> /modules/ and /wp-content/themes -> /templates) and uses rewrite rules .htaccess to map requests to the filesystem. This resulted in Autoptimize not finding the files on the filesystem (as AO does not “see” the mapping in .htaccess), leaving them un-aggregated.

To fix something like that, a small code snippet that hooks into Autoptimize’s API can do the trick;

add_filter('autoptimize_filter_cssjs_alter_url', 'rewrite_hidemywp');
function rewrite_hidemywp($url) {
    if ( strpos( $url, 'modules/' ) !== false && strpos( $url, 'wp-content' ) === false ) {
        $url = str_replace('modules/','wp-content/plugins/', $url);
    } elseif ( strpos( $url, 'templates/' ) !== false && strpos( $url, 'wp-content' ) === false ) {
	$url = str_replace('templates/','wp-content/themes/', $url);
    }
    return $url;
}

The above is just an example (as in the Pro version of hide-my-wp you can set paths of your own liking and you can even replace theme names by random-ish strings), but with a small amount of PHP-skills you should be able to work out the solution for your own site. Happy optimized hiding!

Quick trick to disable Autoptimize on a page

So suppose you have one page/ post which for whatever reason you don’t want Autoptimize to act on? Simply add this in the post content and AO will bail out;

<!-- <xsl:stylesheet -->

Some extra info:

  • Make sure to use the “text”-editor, not the “visual” one as I did here to make sure the ode is escaped and thus visible
  • This bailing out was added 5 years ago to stop the PHP-generated <xsl:stylesheet from Yoast SEO from being autoptmized, if I’m not mistaking Yoast generates the stylesheet differently now.
  • The xsl-tag is enclosed in a HTML comment wrapper to ensure it is not visible (except here, on purpose to escape the HTML tags so they are visible for you to see).

Autoptimize 2.4 beta 3 includes image optimization!

We’re finalizing work on Autoptimize 2.4 with beta-3, which was just released. There are misc. changes under the hood, but the main functional change is the inclusion of image optimization!

This feature uses Shortpixel’s smart image optimization proxy, where requests for images are routed through their URL and automagically optimized. As the image proxy is hosted on one of the best preforming CDN’s with truly global presence obviously using HTTP/2 for parallelized requests, as the parameters are not in a query-string but are part of the URL and as behind the scenes the same superb image optimization logic is used that can also be found in the existing Shortpixel plugin, you can expect great results from just ticking that “optimize image” checkbox on the “Extra” tab :-)

Image optimization will be completely free during the 2.4 Beta-period. After the official 2.4 release this will remain free up until a still to be defined threshold per domain, after which additional service can be purchased at Shortpixel’s.

If you’re already running AO 2.4 beta-2, you’ll be prompted to upgrade. And if you’d like to join the beta to test image optimization, you can download the zip-file here. The only thing I ask in return is feedback (bugs, praise, yay’s, meh’s, …)  ;-)

 

New: Autoptimize CriticalCSS.com Power-Up released!

The Autoptimize criticalcss.com Power-up has just been released to the wordpress.org plugin repository!

This plugin integrates with and extends Autoptimize. It integrates with criticalcss.com, a premium service which uses a “headless” browser to extract real critical CSS. That way it  fully automates the extraction of high-quality critical CSS and the creation of rules for that critical CSS. It can work 100% automated, but also allows semi-automated jobs (where you enter a URL for which you want a specific rule, the power-up will do the rest) and manual rules (where you create the rule and add critical CSS yourself).