Settings

Open Settings from the sidebar or the extension’s options page. Settings are stored in storage.local under vx:settings, in this browser profile only, and are kept when you sign out.

Option	Key	Type and range	Default	Effect
Prefetch on page load	prefetchOnLoad	boolean	false	Look up every identifier as each page loads. Spends one request per identifier per page.
Batch size	sidebarBatchSize	integer 1 to 200	25	Identifiers the sidebar fetches per batch
Concurrent requests	concurrency	integer 1 to 16	4	Parallel lookups. Drops to 1 when fewer than 50 requests remain today.
Open automatically when identifiers are found	autoOpenSidebar	boolean	false	Firefox only. On Chromium a side panel cannot open without a click, so only the toolbar badge count is shown.
Only run on sites I allow	allowlistMode	boolean	false	Switches the site list from a block list to an allow list
Site list	disabledOrigins or allowedOrigins	list of origins	empty	See below

Sites

The list holds origins, typed exactly as scheme://host[:port] with no path, for example https://github.com. The content script compares the page’s location.origin with the list before it does anything.

Mode	Runs on
Block list (default)	Every page except origins in disabledOrigins
Allow list (Only run on sites I allow)	Only origins in allowedOrigins. With an empty list, nowhere.

*.vulnetix.com and vulnetix.com are always excluded by the manifest, whatever the list says. A change applies the next time a page loads.

Cache

Settings > Cache shows the entry count and size on disk, with Clear to remove every cached summary. See Quota and cache.

Shortcut

The open-sidebar command defaults to Alt+Shift+V. Change it in chrome://extensions/shortcuts (Chromium) or Manage Extension Shortcuts under about:addons (Firefox).