WP Deferred JavaScripts
This plugin defer the loading of all JavaScripts added by the way of wp_enqueue_script(), using LABJS. The result is a significant optimization of loading time.
Consider an alternative
WP Deferred JavaScripts shows warning signs in 2026 — compare the alternatives below before installing. It runs on 800+ sites, is rated 3.2/5 and was last updated 10 years ago, and scores 35/100 on our health check.
- Small user base (800+ active installs)
- Mixed reviews — 3.2/5 from 35 ratings
- No update in 10 years
- Only tested up to WordPress 4.6 (latest is 7.1)
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where WP Deferred JavaScripts stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| deferring | >100 |
| javascript | >100 |
| labjs | #1 |
| optimization | >100 |
| performance | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 3.2 from 35 reviews
About WP Deferred JavaScripts
From the official readme · v2.0.5Description
This plugin defer the loading of all JavaScripts added by the way of wp_enqueue_script(), using LABJS. The result is a significant optimization of loading time.
It is compatible with all WordPress JavaScript functions (wp_localize_script(), js in header, in footer…) and works with all well coded plugins.
If a plugin or a theme is not properly enqueuing scripts, your site may not work. Check this page: Function Reference/wp_enqueue_script on WordPress Codex.
LABjs (Loading And Blocking JavaScript) is an open-source (MIT license) project supported by Getify Solutions.
We performed a range of tests to determine the potential benefit of loading time. On wabeo we executed webwait (150 calls by test). Result is this plugin could improve your loading time by 25%!!
More information in the Screenshots section.
You can find more information about WP Deferred JavaScripts and technical information about asynchronous scripts on authors blogs.
Installation
-
Upload the WP Deferred JavaScripts plugin to your blog and activate it.
-
Enjoy ^^
Changelog
2.0.5
- Solve problem encountered on this support topic
2.0.4
- do_not_defer can now accept scripts URI.
- New settings sub-pannel to exclude scripts from deferring, without using the plugin filter.
- Tested up to WordPress 4.4.2
2.0.2
- Minor bugfix: now the plugin catches some data added lately and include it in the plugin script tag (instead of letting the data create its own tag).
2.0.1
- Small code improvement.
- Prefix functions with
wdjsinstead ofsfdjs.
2.0.0
- Overall code rewrite, by Grégory Viguier.
- New hooks.
- LabJS is loaded now loaded asynchronously.
- Conditional script are now supported.
- Bug fix: 404 error on scripts without source.
- Script dependency that should not be deferred are now excluded automatically.
- WP Deferred JavaScripts is compatible with SF Cache Busting.
1.5.5
- Solve a problem when uri script contain “&”.
- Solve a bug while waiting dependencies.
Screenshots
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
FAQ
WP Deferred JavaScripts: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Sep 27, 2026
Is WP Deferred JavaScripts free?
Yes. WP Deferred JavaScripts is free to download and use from the official WordPress.org plugin directory.
Is WP Deferred JavaScripts safe to use in 2026?
WP Deferred JavaScripts shows warning signs in 2026 — compare the alternatives below before installing. It runs on 800+ sites, is rated 3.2/5 and was last updated 10 years ago, and scores 35/100 on our health check.
How many websites use WP Deferred JavaScripts?
WP Deferred JavaScripts is active on 800+ WordPress websites and has been downloaded 159,690 times since it launched in January 2013. It was downloaded 112 times in the last 30 days.
Does WP Deferred JavaScripts work with WordPress 7.1?
WP Deferred JavaScripts is officially tested up to WordPress 4.6.30, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
When was WP Deferred JavaScripts last updated?
The latest version, 2.0.5, was released on September 1, 2016 (10 years ago).
Who makes WP Deferred JavaScripts?
WP Deferred JavaScripts is developed and maintained by Willy Bahuaud.
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