Flying Scripts: Delay JavaScript to Improve Site Speed & Performance
Delay JavaScript to improve speed and performance by loading scripts only when needed, reducing render-blocking for a faster and smoother user experie …
5(37 reviews)
·30K+ active installs·Updated 4 months agoAs of April 2026, Flying Scripts: Delay JavaScript to Improve Site Speed & Performance is a WordPress defer javascript plugin with 30K+ active installations and a 5/5 rating from 37 reviews. It has been downloaded 274K+ times in total. Requires WordPress 4.5+ and PHP 5.6+. Available on WordPress.org since 2020. Downloads are down 10% this week. Support resolution rate: 0%.
5/537 reviews
30K+active installs
0%resolved
6 yearssince 2020
Overview
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
Ratings & Reviews
537 reviews
5 ★
36
4 ★
1
3 ★
0
2 ★
0
1 ★
0
Recent Reviews
Super straight-forward and effective.
by iz4atkal·2 years ago
Highly recommended!
Sehr gutes Plugin
by twinsdz·2 years ago
It works very well. Thanks a lot.
Good and Efficient
by steve-8bm·3 years ago
Good and efficient plugin. 5 stars
Instant results
by Tom Bush·3 years ago
Sooo easy to set up and a great way to deal with heavy JS from advertising etc. Really simple but brilliant approach to defer until user input.
Pagespeed Insights overall score went from 58/70 to 99/100 for mobile & desktop respectively without any other changes (appreciate these values fluctuate anyway but that’s a significant jump even +/- a few points on the final values).
Great Plugin
by Tony Hisir·3 years ago
It saved me a lot of time. Thank you for creating a wonderful plugin.
Download Trends
Today: 114Yesterday: 149This week: 813Period total: 42K
Compatibility
| WordPress | 4.5+ requiredTested up to 6.9.4 |
| PHP | 5.6+ required |
Version Adoption
v1.2
99.8%
v1.1
0.3%
Frequently Asked Questions
Changelog
1.2.4
- Updated list of event listeners to trigger user interaction
Contributors
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.