# RUM on Web workers

**URL:** <https://community.dynatrace.com/t/rum-on-web-workers/54880>\
**Category:** Real User Monitoring\
**Tags:** real-user-monitoring-classic, services\
**Created:** [February 5, 2026, 5:37am UTC](https://community.dynatrace.com/t/rum-on-web-workers/54880 "2026-02-05T05:37:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![TengHong](https://avatars.discourse-cdn.com/v4/letter/t/0ea827/32.png) [@TengHong](https://community.dynatrace.com/u/TengHong)\
**Post date:** [February 5, 2026, 5:37am UTC](https://community.dynatrace.com/t/rum-on-web-workers/54880/1 "2026-02-05T05:37:08Z")

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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?

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<div class="post-metadata">

**Author:** ![KiranSomanatti](https://avatars.discourse-cdn.com/v4/letter/k/3d9bf3/32.png) [@KiranSomanatti](https://community.dynatrace.com/u/KiranSomanatti)\
**Post date:** [February 11, 2026, 12:29pm UTC](https://community.dynatrace.com/t/rum-on-web-workers/54880/2 "2026-02-11T12:29:54Z")

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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:

 ![KiranSomanatti_1-1770812934078.png](https://global.discourse-cdn.com/dynatrace/original/3X/3/2/326ad39c617f05dd467b71b5ddb853bee158bf98.png)