Upon examining the results in this report, it is evident that there are significant gaps between requests. This issue is highlighted in the image below:
https://i.sstatic.net/iA9qm.png
The links here and here explain that these gaps may be caused by the loading of JS/CSS resources. However, determining which specific resource is responsible for each gap can be a challenge. How can this information be pinpointed?
Accessing the developer tools on Chrome or Firefox is as simple as pressing F12. Navigate to the network tab, clear any active recordings using the cancel button, then hit record, refresh the page, and stop the recording once it's done loading. This will display your waterfall diagram, allowing you to analyze the operations that took place.
Upon inspecting the site's waterfall in the developer tools, a delay can be observed around the 80ms mark, followed by a resumption of activity at approximately 93ms (during this specific page load).
https://i.sstatic.net/onUDz.png
The performance tab reveals that this delay corresponds with the browser loading additional JavaScript content. Hence, it appears to be JS-related and caused by blocking operations due to elements being loaded and repainted on the screen (potentially related to lazy loading, themes, or library dependencies).
https://i.sstatic.net/Hfu8E.png https://i.sstatic.net/BLTXg.png
Below are some resources for further examination:
https://i.sstatic.net/06Eiv.png https://i.sstatic.net/tM80n.png https://i.sstatic.net/pEDxr.png
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