Async JavaScript

Descripción

Eliminate Render-blocking Javascript in above-the-fold content with Async Javascript.

Render-blocking Javascript prevents above-the-fold content on your page from being rendered until the javascript has finished loading. This can impact on your page speed and ultimately your ranking within search engines. It can also impact your user’s experience.

Async JavaScript gives you full control of which scripts to add an ‘async’ or ‘defer’ attribute to or to exclude to help increase the performance of your WordPress website.

Instalación

Installation is very straightforward:

  1. Upload the zip-file and unzip it in the /wp-content/plugins/ directory
  2. Activa el plugin desde el menú ‘Plugins’ de WordPress
  3. Go to Settings > Async JavaScript menu to load settings page

Preguntas frecuentes

Installation Instructions

Installation is very straightforward:

  1. Upload the zip-file and unzip it in the /wp-content/plugins/ directory
  2. Activa el plugin desde el menú ‘Plugins’ de WordPress
  3. Go to Settings > Async JavaScript menu to load settings page
Which browsers support the ‘async’ and ‘defer’ attributes

The ‘async’ attribute is new in HTML5. It is supported by the following browsers:

  • Chrome
  • IE 10 and higher
  • Firefox 3.6 and higher
  • Safari
  • Opera
Where can I get help?

Async JavaScript is supported via the wordpress.org support forum.

Do you offer professional support/ configuration services?

We offer premium services for Async JavaScript and full web performance optimization services at https://autoptimize.com/

What about CSS?

As the name implies, Async JavaScript is built to enhance JavaScript loading only. Async JavaScript does not have any impact on CSS.

We recommend using the awesome Autoptimize plugin alongside Async JavaScript for CSS optimization.

I want out, how should I remove Async JavaScript?
  • Disable the plugin
  • Delete the plugin

Reseñas

Fantástic

Gran plugin para mejora la velocidad como la mejora en PageSpeed

Easy, effective, and well supported

Solved my JavaScript parsing issues quickly and effectively. Had some questions about settings, dev responded quickly and pointed me in the right direction. Improved my GTMetrix score, which was the whole intent. Great plugin, thanks!

Excellent Support

Frank was very helpful and helped me to solve my issues very fast ! I never worked with a better support service in the past.

Tried several but this one finally did the trick

When working on my page speed, this was the one piece I had the most challenges with. When I saw this plugin recommended by someone I know, well, I gave it a run and it did exactly what I needed. Great plugin!

Just registered to give 5 stars

Great work here guys! My page speed load decreased from 5 seconds to 2. Never thought that could be so easy. I have almost zero knowledge of script deferring, had to try a few settings, but asyncing did the magic and is totally compatible with my plugins and theme used. Thank you so much.

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Colaboradores y desarrolladores

“Async JavaScript” es un software de código abierto. Las siguientes personas han colaborado con este plugin.

Colaboradores

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Registro de cambios

2.18.06.13

  • fix integration issue with Autoptimize, thx for reporting ElephantDude!

2.18.05.24

  • don’t async (or defer) on AMP-pages
  • disable async/ defer by when ?aj_noptimize=1 is part of the URL

2.18.04.23

  • Re-arrange content on the different tabs of the settings page.
  • Continued refactoring of backend code, no functionality should be affected.
  • Remove all images from the project such as the animated hands and progress bar gif.
  • Remove empty rows that added unnecessary space.
  • Switch buttons to use WordPress button styles.
  • Fix broken Dashboard Widget from 2.18.03.15 and reduce font-size to fix text overflow.
  • Remove all CSS !important declarations for easier CSS styling.
  • Remove inline CSS styles.
  • Switch to a CSS based progress bar.
  • Spell check readme.
  • Remove almost all tables from files.
  • Refactor JavaScript.
  • Add wormeyman as a contributor (thanks man!).

2.18.03.15

  • bugfix: only load asyncjs’ JS & CSS on own settings page as reported by Marat Petrov
  • bugfix: check if jQuery chosen is correctly loaded before using it (based on same report, thanks Marat!)
  • update jQuery Chosen lib
  • small readme tweaks

2.18.03.10

  • ASync JS is now maintained by Frank Goossens (Optimizing Matters), thanks for the great job done David!
  • Moved all Pro features into the standard version.
  • Some code refactoring
  • Made strings ready for translations

2.17.11.15

  • MOD: Added User Agent to GTMetrix requests

2.17.11.03

  • MOD: Check for GTMetrix class existence prior to including class

2.17.10.18

  • FIX: Issue converting array for plugin & theme exclusions

2.17.09.30

  • FIX: Sanitise all $_GET and all $_POST
  • FIX: Add nonce to ajax calls

2.17.06.13

  • MOD: Dashboard Widget and Notices only available to Administrators

2.17.05.08

  • NEW: Added quick settings buttons to allow common settings to be quickly applied
  • NEW: Added current version info to help page

2.17.05.07

  • FIX: Some installs not saving plugin/theme exclusions due to theme incompatibility

2.17.05.06

  • MOD/FIX: On some WordPress installs is_plugin_active function being called too early. Moved is_plugin_active into a dedicated function called via admin_init as per codex: https://codex.wordpress.org/Function_Reference/is_plugin_active

2.17.05.05

  • FIX: Incorrect textarea identifier preventing exclusion save

2.17.05.04

  • FIX: Resolve early loading of plugin causing a fatal error due to function not available yet
  • FIX: CSS / JS not loading

2.17.05.03

  • MOD: Add text to advise running Wizard is not mandatory

2.17.05.01

  • massive Massive MASSIVE rewrite of Async JavaScript!!!
  • Now includes a Setup Wizard, Status page, Settings page and a help page.
  • Communicates directly with GTmetrix (account required)
  • Automatically transfers existing settings from Async JavaScript to Async JavaScript