Development Tenant Banner shows a colored corner banner - staging, UAT, production, or any custom label - on any tab pointed at an environment you define. Works for cloud and on-prem systems alike, and it's completely free.
Point it at a URL that looks like your staging or UAT tenant and mistakes happen - testing on prod, running a script against the wrong environment, making changes in the wrong instance. The banner makes the environment impossible to miss.
The extension has no server component and makes no network requests.
Your tenant list and banner settings are stored using the browser's local extension storage, on your own device. Nothing syncs to an account or a server.
The content script checks the current tab's URL against your tenant list to decide whether to show a banner. It never reads page content, form data, or browsing history.
Read the complete privacy policy for details on exactly what is and isn't collected.