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Firefox DevTools Network Tab: How to filter requests by properties
¶ The request list of the Network Monitor shows a list of all the network requests made in the course of loading the page. Network request list¶ By default, the Network Monitor shows a list of all the network requests made in the course of loading the page.
(Starting in Firefox 80) On the right edge of the File column, a turtle icon appears if the server waiting time exceeds a threshold (default: 500 ms). Each timeline is given a horizontal position in its row relative to the other network requests, so you can see the total time taken to load the page. For example, to find all 404, not found, errors, you can type “404” into the search and auto-complete suggests “status-code:404” so you’ll end up with something like this:
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