Free open-source Steam extensions: features and permissions
An extension can add information and shortcuts to Steam pages, but it also gains permissions inside your browser. Start with a specific need, read the project’s source and license, and install only what you will actually use.
Compare Augmented Steam and SteamDB Extension, check their source licenses and understand the permissions and limits of browser tools for Steam.
Two free extensions with published source code
Augmented Steam publishes its source under GPL-3.0 and focuses on Steam store information, prices, page features and useful links. SteamDB Extension publishes its source under BSD-3-Clause and adds links and features connecting Steam pages with SteamDB information. The comparison below links to the source repositories and license files.
The open-source license applies to the extension code, not automatically to every website, dataset or external API it contacts. Company involvement does not make a project non-open-source, and open source does not mean there are no authors or rights. Neither tool should be assumed to replace every inventory-pricing or skin-inspection service.
Review permissions and keep transactions manual
Follow installation links from the official source repository to the browser’s extension store. Check the publisher, required permissions and current release information. An extension that can read and change Steam pages can interact with content in your signed-in browser session. Broad access to unrelated sites needs a specific justification.
Remove tools you no longer use and review permission changes after updates. Open code makes inspection possible; it is not a guarantee that every release, dependency or external server is safe. Keep purchase and trade confirmations manual. No optional convenience tool should require you to disclose Steam Guard recovery codes or send items for verification.
Compare free open-source extensions
Compare the purpose, permissions and license. Features can change after an update; check the official project before installation.
Frequently asked questions
Are the recommended extensions free?
Yes. The recommendations here are free open-source extensions. External websites and data services can have separate terms, so check those independently.
Do I need an extension to inspect a skin?
No. You can use the item’s inspect link in CS2. An extension is optional and should not replace checking the actual item and trade confirmation.
How much is your Steam inventory worth?
Separate Steam listing prices, net sale proceeds and cash value. Learn to value an inventory without exposing your account or overlooking rare items.
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How to sell CS2 skins: Steam and cash sales
Choose a sale route, compare net proceeds and verify the item and recipient. Understand why Steam Wallet credit is different from a cash sale.
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