What is the best way for a designer to debug and optimize unused Javascript in Webflow?

Published on
September 22, 2023

One of the key aspects of optimizing a website's performance is to eliminate any unnecessary code, including unused JavaScript. In Webflow, designers have several options to debug and optimize unused JavaScript:

  1. Review and Remove Unused Code: Begin by reviewing the JavaScript code throughout your project and identifying any sections that are not being utilized. Look for custom code embeds, interactions, or other JavaScript elements that are no longer in use. To remove this code, follow these steps:
  • In the Designer, navigate to the page where the code is located.
  • Click on the element containing the code.
  • In the right-hand panel, go to the "Settings" tab.
  • Scroll down to the "Custom Code" section and remove any unnecessary JavaScript from the "Head Code" or "Footer Code" fields.
  1. Use the Lighthouse Audit Tool: Lighthouse is an auditing tool built into Google Chrome's Developer Tools. It helps assess a webpage's performance, accessibility, and more. To utilize Lighthouse, follow these steps:
  • Open the webpage in Google Chrome.
  • Right-click anywhere on the page and select "Inspect" to open the Developer Tools.
  • In the Developer Tools panel, click on the "Lighthouse" tab.
  • Click the "Generate report" button to initiate the audit process.
  • Lighthouse will provide you with an overview of the webpage's performance, including unused JavaScript that can be optimized.
  1. Use Webflow's Code Panel: Webflow provides a "Code" panel, allowing designers to add custom code snippets to any page or project. This panel can also be used to review and optimize JavaScript code:
  • In the Designer, select a specific element or page.
  • In the right-hand panel, go to the "Settings" tab.
  • Scroll down to the "Custom Code" section and click on the "Code" tab.
  • Here, you can review and optimize any JavaScript code that is added directly to the page or project.
  1. Minify and Combine JavaScript: Another helpful technique is to minify and combine JavaScript files. This reduces the file size and the number of HTTP requests, improving load times. To do this:
  • Use a JavaScript minification tool to remove unnecessary characters, spaces, and line breaks from your code.
  • Combine multiple JavaScript files into a single file to minimize the number of requests needed to load the page.

Optimizing and debugging unused JavaScript in Webflow is important for enhancing the overall performance and loading speed of your website, leading to a better user experience and improved search engine rankings.

Additional Questions:

  1. How can I optimize unused JavaScript in Webflow?
  2. What are some techniques to debug JavaScript code in Webflow?
  3. Is it possible to minify and combine JavaScript files in Webflow?