If you installed New Relic's Go agent for your app, you can also use browser monitoring to monitor browser performance. To install the browser agent, use the copy and paste method, or use the Go agent API.
Transaction.BrowserTimingHeader method. Support for browser monitoring's timing headers is available with Go agent versions 2.5.0 or higher.
Include the byte slice returned by
Transaction.BrowserTimingHeader().WithTags() as early as possible in the
<head> section of your HTML and after any
<meta charset> tags.
Transaction.BrowserTimingHeader is request-specific. That is why it must be called on each request.