05 Feb 2026 05:37 AM - edited 06 Feb 2026 03:20 AM
Hi I have a web application that uses Web worker for its backend logic and from to to time the Web worker will perform xhr / fetch request for some resource files from the server based on user's actions.
I notice that RUM captures only the main page's interaction/request but not from the web workers. Is there a way for us to capture the xhr /fetch request that is triggered from the web worker?
11 Feb 2026 12:29 PM
If the page uses webworkers, the JS agent will not be able to track the request because it happens in a completely different context and is absolutely invisible to the JS agent.
Perform the action and check the Network Tab.
Requests in a webworker are indicated with a small cogwheel:
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