SteamHelper is a browser extension that brings Steam inventory, market, and trade tools directly to Steam. Available for Chrome, Edge, Brave, Firefox, and other Chromium-based browsers, it requires no account or setup and works on Steam Community pages.

The extension helps users estimate inventory value by showing Steam’s reference value alongside market value, with item-by-item prices and a count of how many items have been priced. For CS2 skins, it displays market comparisons, float and wear information, paint seeds, patterns, and Doppler phases. Users can compare prices across wear conditions and see lower-priced marketplace listings while browsing Steam items and search results.

SteamHelper also supports selling and trading. Users can prepare bulk listings for review, choose suggested or custom prices, manage active listings, and update or cancel several listings at once. Its trade checker shows per-item prices and floats, calculates the value difference between both sides, and provides a profit-or-loss summary for incoming offers and trades in progress.