This article applies to Arc for macOS, but not Arc for Windows.
What are Previews?
Previews allow you to glance top sites without leaving your current tab. Just hover over a tab to see its Preview.
Which Sites Have Previews?
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Gmail / Outlook Mail: View recent emails, create a new email
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Google Calendar / Outlook Calendar: View upcoming meetings, join calls
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Github: View Open PRs and if they're approved
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Notion: View recent pages, create a new page
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Confluence: View recent pages
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Figma: View recent files, create a new file
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Linear: View issues, create a new issue
How to Turn On Previews
Previews work automatically when you hover on a Pinned or Favorited site!
Some previews, like Google Calendar, require you to sign in to the Preview before viewing content.
How to Turn Off Previews
You can toggle Previews on or off in Preferences. Visit Preview Preferences by going to Arc > Settings (in the Mac Menu Bar) and then selecting Previews in General. Uncheck previews you don't want to show on hover.