Improve page loading speed by removing JavaScript and CSS that block rendering of above-the-fold content, specifically focusing on Angular JS

Currently, I am working on improving the page speed of my MEAN stack application. My main challenge lies in eliminating render-blocking Javascript and CSS to enhance the loading time. Despite making significant progress, I have hit a roadblock with the controllers that need to be loaded.

I have explored different options, including adding "async" as an attribute on the <script>, but unfortunately, Angular throws an injector module error, rendering this approach ineffective. Another consideration was consolidating all controllers into one large controller, but this also proved to be less than ideal.

You can view my site at . Below is the code snippet for the controllers:

<!-- ANGULAR CUSTOM -->
<script src="js/app.js"></script>
<script src="js/controllers/MainCtrl.js"></script>
<script src="js/controllers/ContactCtrl.js"></script>
<script src="js/controllers/ProductCtrl.js"></script>
<script src="js/controllers/ProductsCtrl.js"></script>
<script src="js/controllers/CartCtrl.js"></script>
<script src="js/controllers/TrackOrderCtrl.js"></script>
<script src="js/controllers/CheckoutCtrl.js"></script>
<script src="js/controllers/DesignerCtrl.js"></script>
<script src="js/controllers/SublimationCtrl.js"></script>
<script src="js/controllers/LocationCtrl.js"></script>
<script src="js/controllers/ServiceAreaCtrl.js"></script>
<script src="js/controllers/CategoriesCtrl.js"></script>
<script src="js/services/getCategoryText.js"></script>
<script src="js/controllers/CustomQuoteCtrl.js"></script>
<script src="js/controllers/GradContestCtrl.js"></script>
<script src="js/controllers/four04Ctrl.js"></script>
<script src="js/controllers/popularGroupingCtrl.js"></script>

I greatly appreciate any insights or expertise you may have in tackling this issue!

Answer №1

One issue we're facing is the high volume of requests. To address this, I suggest combining the JS files (both app and vendor files) and minimizing them. For more performance optimization tips, you can utilize Chrome's Developer tools audits feature.

Answer №2

A helpful tip is to utilize gulp-concat for combining requests, as mentioned in Alexander's response. Following this, employ gulp-minify to reduce the file size further. However, implementing the async option may result in complications when rendering HTML that relies on angular.

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