Why is Firefox HAR data page timings for onContentLoad and onLoad equal to -1
I am doing network performance test on my website to get timings of page load and resources. I can use the Firefox Dev Tools and "Save All As HAR". However, the data doesnt give the page timings correctly.
Here is the a sample of the HAR file:
"pages": [ { "startedDateTime": "2017-07-22T14:47:49.001+01:00", "id": "page_6", "title": "Mid-Latency", "pageTimings": { "onContentLoad": -1, "onLoad": -1 } } ],
1. Why is the page timings -1 and how do I get the correct onLoad e.g. 800ms 2. Where is the waterfall resource timings that gives specific timings of scripts/images/css downloads, queuing and loading information?
All Replies (1)
Please refer to this topic: https://support.mozilla.org/en-US/questions/1168709