v151 · Platform · macOS
Update Banner Preview
Generate a user-facing notification banner for macOS 12 users in your web app or intranet portal. Configure the tone, the call-to-action link, and the urgency level — preview the banner as it would appear to end users, and copy the HTML snippet to deploy it.
Banner configuration
Banner preview
HTML snippet
see also
- Deprecation Demo — detect macOS version with UA-CH
- macOS Support Checker — live version probe
- Fleet Readiness Dashboard — IT admin runway calculator
- Migration Guide — upgrade paths for users
- ChromeStatus entry
implementation reference
Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗