PerformanceResourceTiming.startTime vs PerformanceResourceTiming.fetchStart

[Joozty]

MDN URL

https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming

What specific section or headline is this issue about?

Timestamps

What information was incorrect, unhelpful, or incomplete?

The image shown on PerformanceResourceTiming
distinguishes between startTime and fetchStart. However, the text above the image states that these values are the same.

What did you expect to see?

I am not sure which statement is correct.

Do you have any supporting links, references, or citations?

No response

Do you have anything more you want to share?

No response

MDN metadata

Page report details

• Folder: en-us/web/api/performanceresourcetiming
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/api/performanceresourcetiming/index.md
• Last commit: 40fa68f
• Document last modified: 2026-04-04T16:17:46.000Z