Flying Scripts: Delay JavaScript to Improve Site Speed & Performance
Flying Scripts delay the execution of JavaScript until there is no user activity. You can specify keywords to include JavaScripts to be delayed. There is also a timeout which executes JavaScript when there is no user…
Solid choice
Flying Scripts: Delay JavaScrip… is a solid plugin choice in 2026, with a few things worth checking first. It runs on 30K+ sites, is rated 5/5 and was last updated 4 months ago, and scores 65/100 on our health check.
- Proven at scale on 30K+ active sites
- Loved by users — 5/5 from 38 reviews
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Flying Scripts: Delay JavaS… stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| 3rd party scripts | #1 |
| defer javascript | #2 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 5 from 38 reviews
About Flying Scripts: Delay JavaScript to Imp…
From the official readme · v1.2.4Description
Download and execute JavaScript on user interaction.
Flying Scripts delay the execution of JavaScript until there is no user activity. You can specify keywords to include JavaScripts to be delayed. There is also a timeout which executes JavaScript when there is no user activity.
Why should I use this plugin?
JavaScript is very resource-heavy. By delaying the execution of non-critical JavaScript (that are not needed for the initial render), you’re prioritizing and giving more resources to critical JavaScript files. This way you will reduce render time, time to interactive, first CPU idle, max Potential input delay etc. This will also reduce initial payload to browsers by reducing the no. of requests.
Support
Our premium products
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Contributors
Installation
- Visit ‘Plugins > Add New’
- Search for ‘Flying Scripts’
- Activate Flying Scripts for WordPress from your Plugins page.
- Visit Settings -> Flying Scripts to configure
Frequently asked questions
What are the ideal scripts to be included?
Any script that is not crucial for rendering the first view or above fold contents. 3rd party scripts like tracking scripts, chat plugins, etc are ideal.
What should I put in include keywords
Any keyword inside your inline script that uniquely identifies that script. For example “fbevents.js” for Facebook Pixel, “gtag” for Google Tag Manager, “customerchat.js” for Facebook Customer Chat plugin.
How is it different from `defer`
defer tells browser to download the script when found and execute it when HTML parsing is complete. When you include a script in Flying Scripts, those scripts won’t be executed until there is a user interaction.
What is user interaction?
Events from the user like mouse hover, scroll, keyboard input, touch in mobile device, etc.
What is timeout?
Even if there is no user interaction, scripts will be executed after the specified timeout.
Changelog
1.2.4
- Updated list of event listeners to trigger user interaction
1.2.3
- Increased DOM size limit
- Updated “Optimize more” tab
1.2.2
- Fix – Added mouse wheel event for user interaction
1.2.1
- Fix – FacetWP compatibility
1.2.0
- New – Exclude on pages
- New – Set timeout to Never
1.1.9
- Security updates
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
Flying Scripts: Delay JavaScript to…: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Sep 26, 2026
Is Flying Scripts: Delay JavaScrip… free?
Yes. Flying Scripts: Delay JavaScrip… is free to download and use from the official WordPress.org plugin directory.
Is Flying Scripts: Delay JavaScrip… safe to use in 2026?
Flying Scripts: Delay JavaScrip… is a solid plugin choice in 2026, with a few things worth checking first. It runs on 30K+ sites, is rated 5/5 and was last updated 4 months ago, and scores 65/100 on our health check.
How many websites use Flying Scripts: Delay JavaScrip…?
Flying Scripts: Delay JavaScrip… is active on 30K+ WordPress websites and has been downloaded 292,922 times since it launched in February 2020. It was downloaded 3,048 times in the last 30 days.
Does Flying Scripts: Delay JavaScrip… work with WordPress 7.1?
Flying Scripts: Delay JavaScrip… is officially tested up to WordPress 7.0.6, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does Flying Scripts: Delay JavaScrip… need?
Flying Scripts: Delay JavaScrip… requires PHP 5.6 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Flying Scripts: Delay JavaScrip… last updated?
The latest version, 1.2.4, was released on May 20, 2026 (4 months ago).
Who makes Flying Scripts: Delay JavaScrip…?
Flying Scripts: Delay JavaScrip… is developed and maintained by Gijo Varghese.
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