Steam Library Checker For

Steam Library Checker for Instant Gaming helps you avoid buying games you already own. (Steam profile has to be set as publicly visible)

When browsing Instant Gaming, the extension automatically checks your Steam library and highlights games that are already in your collection. Owned games are visually marked on the page so you can instantly see whether a title is already in your Steam account.

Makes your browsing easier and enjoy the best deals while preventing accidental duplicate purchases !

- Works dynamically

Instant Gaming pages often load new games dynamically while scrolling. The extension monitors the page and automatically checks newly loaded titles.

-Simple setup

Just enter your Steam User ID / SteamID64 once in the extension popup and your library will be synced.

-How it works:

1. Install the extension.
2. Open the extension popup.
3. Enter your Steam user ID (SteamID64).
4. Browse Instant Gaming normally.

Owned games will automatically be marked while you browse.

-Privacy

This extension only uses your Steam user ID to retrieve your public library information.
Your Steam user ID is stored locally in your browser.
No browsing activity is tracked.
No personal data is sold or shared.
The extension only runs on Instant Gaming pages.

-Permissions explained:

activeTab – allows the extension to update the current Instant Gaming page.
scripting – used to mark owned games directly on the page.
storage – stores your Steam user ID locally in your browser.

-Disclaimer

This extension is an independent project and is not affiliated with or endorsed by Steam or Instant Gaming.