---
title: Add browser monitoring to your Go apps
source: https://docs.newrelic.com/docs/apm/agents/go-agent/features/add-browser-monitoring-your-go-apps
---
If you installed New Relic's Go agent for your app, you can also use [browser monitoring](https://docs.newrelic.com/docs/browser/new-relic-browser/getting-started/introduction-new-relic-browser) to monitor browser performance. To install the browser agent, use the [copy and paste method](https://docs.newrelic.com/docs/browser/new-relic-browser/installation/install-new-relic-browser-agent#copy-paste-app), or use the Go agent API.
## Install with Go agent browser API [#go-browser-api]
To enable support for browser monitoring, your HTML pages must include a JavaScript snippet that will load the browser agent and configure it with the correct application name. This snippet is available with the `Transaction.BrowserTimingHeader` method. Support for browser monitoring's timing headers is available with [Go agent versions 2.5.0 or higher](https://docs.newrelic.com/docs/release-notes/agent-release-notes/go-release-notes).
Include the byte slice returned by `Transaction.BrowserTimingHeader().WithTags()` as early as possible in the `` section of your HTML and after any `` tags.
The JavaScript returned from `Transaction.BrowserTimingHeader` is request-specific. That's why it must be called on each request.
```go
func indexHandler(w http.ResponseWriter, req *http.Request) {
io.WriteString(w, "")
// The New Relic browser javascript should be placed as high in the
// HTML as possible. We suggest including it immediately after the
// opening tag and any tags.
txn := newrelic.FromContext(req.Context())
hdr := txn.BrowserTimingHeader()
// BrowserTimingHeader() will always return a header whose methods can
// be safely called.
if js := hdr.WithTags(); js != nil {
w.Write(js)
}
io.WriteString(w, "browser header page")
}
```