Guide

Best Steam Extensions: Store, Market and CS2 Tools

There is no single best Steam extension — the right one depends on whether you buy games, collect CS2 skins or trade. This guide groups popular Steam browser extensions by what they are good at. Full disclosure: we make SteamHelper, so it is on the list too, next to tools we do not make.

Augmented Steam — for the Steam Store

Augmented Steam is the open-source successor to Enhanced Steam. It improves the Steam Store and Community with price history and lowest-price info from IsThereAnyDeal, extra wishlist and library features and many small quality-of-life tweaks.

  • Best for: buying games
  • Open source
  • Chrome, Firefox and Edge

SteamDB extension — for store data

The official SteamDB browser extension connects Steam Store pages with SteamDB and surfaces extra data such as app IDs, price history links and details Steam does not show.

  • Best for: game and app research
  • Made by the SteamDB team
  • Chromium browsers and Firefox

SteamHelper — for inventory, market and trades

SteamHelper, our extension, adds inventory value, CS2 price badges, external marketplace prices, per-wear comparison, float data and trade offer totals to Steam Community pages, with a focus on staying clean and easy to read.

  • Best for: everyday CS2 players who want to know what items are worth
  • Instant Sell, Quick Sell and Multi Sell
  • Chrome, Edge, Brave, Opera and Firefox

Steam Inventory Helper — the long-standing all-rounder

Steam Inventory Helper (SIH) has been around for years and offers a wide range of inventory, market and trading features across many games. Players who want the broadest feature list often start here; players who prefer a quieter interface often look for alternatives.

  • Best for: many features in one tool
  • Covers several Steam games
  • Available on the Chrome Web Store

CSFloat Market Checker — for float values

The CSFloat Market Checker shows float values, paint seeds and sticker wear on Steam Community Market listings and inventories. It is a focused tool for players hunting specific floats or patterns.

  • Best for: float and pattern hunting
  • Open source
  • Chrome and Firefox

CS2 Trader — for trade offer power users

CS2 Trader, formerly CSGO Trader, is an open-source extension focused on trading, with trade offer enhancements, prices, floats and many configurable options for experienced traders.

  • Best for: frequent traders
  • Open source
  • Highly configurable

How to choose a Steam extension safely

  1. Check where it comes from

    Install only from the Chrome Web Store, Mozilla Add-ons or Microsoft Edge Add-ons, and check the publisher, update history and reviews.

  2. Read the permissions

    A Steam extension needs access to Steam pages. Be careful with extensions that want to read and change data on every website without a clear reason.

  3. Never enter your Steam password

    No legitimate extension needs your Steam password or Steam Guard codes. Fake Steam login pop-ups are one of the most common ways skins get stolen.

  4. Avoid overlapping extensions

    Running several market or inventory extensions at once duplicates buttons, slows pages down and can cause conflicts. Pick one tool per job.

  5. Watch for API key scams

    If your account has a Steam Web API key you did not create, revoke it on Steam's API key page — stolen keys have been used to intercept trade offers.

Best Steam extensions FAQ

What is the best Steam extension?

It depends on the job. For buying games, Augmented Steam and the SteamDB extension are popular. For CS2 inventory value, prices and trades, SteamHelper, Steam Inventory Helper and CS2 Trader are common choices. For float values specifically, CSFloat Market Checker is a focused option.

Are Steam extensions safe?

Extensions from official browser stores with a known publisher and clear permissions are generally fine, but no extension should ever ask for your Steam password or Steam Guard codes. Check permissions and reviews before installing.

Can I use several Steam extensions at once?

Yes, but avoid overlapping ones. Two inventory or market helpers on the same page can duplicate prices and buttons. SteamHelper shows a notice when it detects Steam Inventory Helper or CS2 Trader running on the same Steam page.

Do Steam browser extensions affect VAC?

Extensions that display information on Steam web pages run in your browser, separate from the CS2 game client. Tools that automate trading or other actions at scale are a different matter — read Steam's rules before using any automation.

Do these extensions work in Firefox?

Many do. SteamHelper, Augmented Steam, the SteamDB extension and CSFloat Market Checker all have Firefox versions.

Is SteamHelper affiliated with the other extensions listed?

No. SteamHelper is independent and not affiliated with Augmented Steam, SteamDB, Steam Inventory Helper, CSFloat, CS2 Trader or Valve. Their names are used only to identify those products.