Plugin Reviews

WP Deferred Javascripts

Defer the loading of all javascripts added with wp_enqueue_scripts, using LABJS (an asynchronous javascript library).

9 reviews
Average Rating
3.8 out of 5 stars
Version 2.0 broke do_not_defer
By , for WP 4.1

Version 2.0 broke do_not_defer without warning, please rollback to the previous (working) version. Very poor quality control.

It Works!
By , for WP 3.9.1

I have installed it together with other plugins to improve my site speed. They all work wonderfully.

I used it on one of my blogs and the speed score is now 91/100. And I even wrote about your great plugin together with the other two over [Link redacted]

By ,

Temps d'affichage nettement amélioré !
Et d'un point de vu utilisateur ça n'a pas de prix !

By , for WP 3.8

It eliminates render-blocking JavaScript for google PageSpeed

Works, but no effect on JS load times
By ,

What would really be useful is if WP had an option to register scripts with an option to set the defer/async attributes within the script HTML tag:


Works as advertised
By , for WP 3.6.1

This is the very first plugin that managed to load my scripts asynchronously, without breaking my site.

All I had to do was to exclude 'jquery' and 'cycle' from deferral, in my functions.php of my child-theme...

function scripts_to_not_defer(){
	return array('jquery', 'cycle');

due to a slider plugin I'm using.

I took off one star because of 2 things:

  1. No back-end settings (e.g. for the exclusions).
  2. It forcefully appends query strings with the current wp version at the url of the scripts.

The second one is not a biggie, but it hurts the GTmetrix PageSpeed ratings.

It can be easily fixed though by replacing...

$ver = ( ! empty( $wp_scripts->registered[ $d ]->ver ) ) ? $wp_scripts->registered[ $d ]->ver : get_bloginfo( 'version' );


$ver = ( ! empty( $wp_scripts->registered[ $d ]->ver ) ) ? $wp_scripts->registered[ $d ]->ver : null;

That is: null instead of get_bloginfo( 'version' )

Please also note, that the line to be fixed appears twice inside the plugin's php file.

I haven't tested the plugin extensively, but I'm quite happy I finally found one that works.

Plugin indispensable
By , for WP 3.5.2

Temps de chargement divisé par deux.

Not working after 1.1
By , for WP 3.5.1

Updates are frequent and annoying. Defer parsing of JavaScript problem was fixed in version 1.0 of this plugin. Now starting from 1.1 to 1.5.2 the problem persists. What a waste.

Should have never updated.

By , for WP 3.5.1

Bon boulot. Merci.

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