What are report annotations?
Annotations are short notes that you and other users can write and attach to specific dates in your Google Analytics reports. Even the most basic level of user can create annotations so anyone who can access a View can annotate it.
Click the tab below any time-based graph (immediately beneath the graph’s time axis) to open the Annotations drawer and both see annotations that have already been entered and add your own. Type your note into the text area, and optionally click the Private button next to Visibility if you don’t want others to see it; by default, annotations are Shared, which means that any user with access to that report can view it. Annotations you create are automatically attributed to the name you logged into Analytics with.
You can use annotations to call attention to something of interest, create a reminder or to-do, or add explanatory information that helps to shed light on what’s recorded in the graph – noting that a spike in traffic correlates with the launch of a new marketing campaign, say, or recording that a dip in the figures coincided with a site outage. There are no restrictions on what you can enter – it could be general news, weather or any other time-specific factor that could affect website behavior.
After you’ve created an annotation, a small caption icon appears in the graph’s time axis below the corresponding date. You can click this icon (or the small arrow tab again) to display that annotation, as well as any others for the selected period.
Annotations are replicated among all reports within the same View. For example, if you create an annotation in the Landing Pages report, the caption icon will also appear in the All Referrals report. You can also view all annotations (shared or private) in a list in the Admin tab for that View, assuming you have admin rights.
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