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Chrome download slow9/15/2023 But, compared to the 6.5s of JavaScript execution time, this isn't too important.īy comparison, the Getty Images homepage doesn't require a lot of CPU processing. Switching to the Network tab, we can see that the document request could probably be sped up, and the JavaScript bundle could be loaded more quickly. The Youtube homepage spends a lot of time running JavaScript and rendering the UI. If the CPU timeline contains a lot of orange then the page is running a lot of JavaScript, and it might be better to look into that instead of focussing on the network. Then select the Performance tab and click the Start profiling and reload page button. To check what's slowing down your page, open Chrome DevTools by right-clicking on the page and selecting Inspect. Heavy CPU processing is also a common cause of slow page load times. Getting started: is the network the performance bottleneck? īefore looking at the requests made by the page we first need to check if the network is actually what's slowing it down. Viewing request headers and response status.Getting started: is the network the performance bottleneck?.This article explains how to use the DevTools Network tab to debug performance issues. ![]() ![]() Chrome's developer tools provide a lot of information on what's slowing down your site and how to make it faster.
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