how to check if lazy loading is working

Web performance is a crucial aspect of any website, and one technique that is gaining popularity in recent times is lazy loading. Lazy loading is a technique that delays loading of non-essential content that appears below the fold of a webpage until it is needed. This approach can increase perceived load time and reduce page load time, but how do you check if lazy loading is working? In this article, we will discuss the steps to verify if lazy loading is working on your website.

Step 1: Open Developer Tools

The first step is to open your browser developer tools. This can be done by right-clicking on any element of your webpage and selecting \"Inspect\" or by using the keyboard shortcut Ctrl Shift I on a PC or Command Option I on a Mac. This will open the browser's developer tools window.

Step 2: Navigate to the Network Tab

Once you have opened the developer tools window, navigate to the Network tab. This tab displays all the requests made by your webpage, including resources such as images, JavaScript files, CSS files, and any other files that are loaded.

Step 3: Load the Webpage

Next, load the webpage that you want to check for lazy loading. As the page loads, you should see a list of all the resources that are being requested by the webpage in the Network tab.

Step 4: Analyze the Network Requests

Now that the webpage has finished loading, analyze the network requests made by the webpage. Look for any images or other resources that were not loaded during the first request. These resources will usually have a status of \"Pending\" or \"Load Finished\" instead of \"200 OK.\"

Step 5: Test the Lazy Loading Functionality

To test if the lazy loading functionality is working, scroll down the webpage to the part where additional content should be loaded. This will trigger the lazy loading feature, and you should see new resources being requested in the Network tab. If the additional resources are being loaded with a status of \"200 OK,\" then the lazy loading functionality is working correctly.

Conclusion

Lazy loading can significantly improve the perceived and actual load times of a webpage. By following the above steps, you can verify that the lazy loading functionality is working on your website. Remember to optimize your server and website for performance so that your users have the best possible experience on your site.