I've been doing some performance checks on a website I'm building, and noticed that jQuery 3.5.1 is being loaded via cpresources:

Sources pabel

Why is it doing this? And can I stop it? I'm already loading jQuery 3.5.1 in my scripts.js file (combined with some other stuff and minified using gulp & webpack).

  • 1
    Do you have any plugins installed?
    – dmatthams
    Dec 17, 2020 at 22:09
  • I do ya... come to think of it, I bet Wheel Form is the culprit
    – Bryce
    Dec 20, 2020 at 3:13

2 Answers 2


If any of your image transforms have not previously been processed they will make a call to /cpresources/... To prevent this, generate all your transforms before page load with the generateTransformsBeforePageLoad config setting:

'generateTransformsBeforePageLoad' => true
  • What do image transforms have to do with jquery?
    – Bryce
    Dec 20, 2020 at 3:14

Screenshot looks like FE, not BE.

This happens when you use {% js on load %} or {% js on ready %}

For now I switched to {% js %} and wrapped my script with jQuery(function ($) { ... })

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