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Browser extension

What the StackHangar browser extension does, what it never does, and what it can tell your browser about a provider's site.

The StackHangar browser extension saves a newly created key into your vault from the provider's own page, and shows which of your accounts use a provider when you are on its site.

It works in Chrome, and in Edge, Brave and Arc, on a computer.

#What it does

  • Capture a key. Select a key on a provider's page, right-click and choose Save to StackHangar, or paste it into the extension's popup. A StackHangar tab opens where you pick the project and save. See Capture a key.
  • Show what you already have. On a provider's site, click the toolbar button. It lists your accounts at that provider: which projects use each one, how you sign in, and the next date. It answers only while your vault is unlocked.

#What it never does

  • It never holds your vault key.
  • It never sees a value you've stored, or a note, a URL or an item name.
  • It doesn't fill in forms or passwords. It isn't a password manager.
  • It doesn't ask for access to every website. It sees a page only when you right-click a selection or click its button.
  • Which sites you visit isn't sent to StackHangar's servers.

#What the extension can ask your app

The extension may ask one question: which accounts do you have at this site? The app answers only while your vault is unlocked, with account labels, project names, sign-in method and a date. It doesn't answer while the vault is locked.

A captured key travels the other way, once: from the extension to one unlocked StackHangar tab. The extension keeps it in memory only until that tab collects it, you close the tab, or 5 minutes pass.

The app talks only to the StackHangar extension, and the extension accepts only app.stackhangar.com. See What StackHangar can see.

#In this section

In this section