How to remove unused javascript shopify?

1. Check assets folder of the theme and remove unused CSS and JS file.
2. Check and remove unused apps.
3. If your store has not install any app you can comment {{ content_for_header }} code in theme. liquid (not recommended if you don’t have a knowledge about the liquid)

Also know, how do you remove unused JavaScript? If your website is running on WordPress, you can remove the unused JavaScript from its pages using special plugins. For example, you can use AssetCleanUp, which also allows you to disable unused JavaScript files. Another option is to detect unused JS with Chrome DevTools and delete unnecessary files.

Considering this, how do I remove unwanted code Shopify?

People ask also, what does remove unused JavaScript mean? Overview. Reducing unused JavaScript can reduce render-blocking behaviour to speed up your page load and improve your visitors’ page experience. By default, JavaScript files are render-blocking because they block the browser from dealing with other page load tasks, thus delaying your page’s First Paint.

In this regard, can you edit JavaScript in Shopify? To add JavaScript to an individual or group of Shopify pages: Go to your Shopify Admin and go to Online Store. Click Actions > Edit Code.

1. Open Chrome DevTools.
2. Press Control+Shift+P or Command+Shift+P (Mac) to open the Command Menu. Figure 1. The Command Menu.
3. Start typing javascript , select Disable JavaScript, and then press Enter to run the command. JavaScript is now disabled.

How do I remove dead code?

1. Delete unused code and unneeded files.
2. In the case of an unnecessary class, Inline Class or Collapse Hierarchy can be applied if a subclass or superclass is used.
3. To remove unneeded parameters, use Remove Parameter.

How do I get rid of Render blocking resources Shopify?

1. Load only the resources needed for above the fold content in the page head.
2. Defer non-critical CSS / JS to load below the fold.
3. This can make the top of your page load faster, giving a faster perceived load time.

How do I delete a file in Shopify?

Step #1: Locate the file you want to delete (using the search bar is optional). Step #2: Click the trash can icon next to the file. Step #3: Confirm delete. Files can easily be uploaded, managed, and deleted in Shopify.

How do you lazy load images on Shopify?

1. Add the lazysizes.js library to your theme assets folder and include it in theme.liquid.
2. Locate the image tags in your theme files.
3. Update those image tags by swapping src with data-source and adding the “lazyload” class.
4. Optionally add some CSS styling for animation effects.

How do I get rid of unused CSS and JavaScript without plugin in WordPress?

1. Upload purified stylesheet.
2. Remove existing stylesheets.
3. Make sure all styles have been removed.
4. Remove inline styles if any exists.
5. Enqueue the purified CSS.
6. Test your changes thoroughly!
7. Adjust purified CSS code.

How do I get rid of unused CSS?

1. Open Chrome DevTools.
2. Open the command menu with: cmd + shift + p.
3. Type in “Coverage” and click on the “Show Coverage” option.
4. Select a CSS file from the Coverage tab which will open the file up in the Sources tab.

What is PurgeCSS?

PurgeCSS is a tool to remove unused CSS from your project. Get Started Introduction.

How do I inject JavaScript in Shopify?

1. create a public URL for the CSS file and create a link tag and append that to the document via JS.
2. create a style tag and append that to the DOM and insert the styles there via AJAX or just have them as a string inside the javascript file.

How do I use JS in Shopify?

1. Go to your Shopify Admin and go to Online Store.
2. Click Actions > Edit Code.
3. Under your Templates folder, select Add a new template.
4. Choose the type of page you want the JavaScript to be added to.
5. Click Create template.

Where do I change Shopify code?

From your Shopify admin, go to Online Store > Themes. Find the theme you want to edit, and then click Actions > Edit code.

Should I disable JavaScript?

Disabling Javascript can be quite beneficial as it allows you to improve your online activity and browsing speed. Security: The biggest issue with JavaScript is suspicious webpages. Furthermore, client browsers can insert malicious code that directly affects your computer.

How do I check if JavaScript is enabled?

1. go to Tools.
2. then Internet Options
3. select the Security tab.
4. press the Custom Level button.
5. scroll down to Scripting.
6. enable Active Scripting.

Can a user disable JavaScript in the browser?

Modern web browsers have an option to disable JavaScript entirely, just as they have the option to disable images and other web features. In Chrome, you’ll find this under Settings > Privacy and Security > Content Settings > JavaScript.

Should dead code be removed?

Removing such code has several benefits: it shrinks program size, an important consideration in some contexts, and it allows the running program to avoid executing irrelevant operations, which reduces its running time. It can also enable further optimizations by simplifying program structure.

What test is used to eliminate dead?

Dead code elimination is a form of compiler optimization in which dead code is removed from a program. Dead code analysis can be performed using live variable analysis, a form of static code analysis and data flow analysis. This is in contrast to unreachable code analysis which is based on control flow analysis.