Steam Bulk Sell

Name: Steam Bulk Sell
Rating: 3.65 (20 reviews)
Author: k5md

By: k5md

An add-on allowing mass item selling on Steam

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Features & Capabilities

Steam Bulk Sell is a Firefox web extension designed to simplify the process of selling multiple items on Steam. With this add-on, users can select numerous inventory items simultaneously and apply price presets such as median price, median times a multiplier, or custom prices for quick and efficient selling.

The extension supports selecting entire inventory tabs and asynchronously loads prices directly from Steam, ensuring up-to-date valuation with minimal delay. It integrates smoothly with privacy-focused addons by handling necessary permissions for cookies and web requests. Steam Bulk Sell is open source, encouraging community contributions for enhancements and features, making it a handy tool for Steam users managing large inventories.

User Growth & Download Statistics

Add-on Games Open Source

By:

k5md

Daily users:

2,004 3

Rating:

3.65

(20) 0.07

Version:

1.2.2 Last updated: 2026-01-09

Version code:

6117164

Creation date:

2020-03-18

Risk:

Permissions:

cookies
contextualIdentities
webRequest
webRequestBlocking
*://steamcommunity.com/id/*/inventory*
*://steamcommunity.com/profiles/*/inventory*
*://steamcommunity.com/market/sellitem/*

Content scripts matches:

steamcommunity.com

Size:

143.28KB

Email:

k5*****@yandex.ru

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 2,177 ▼ 7

Other rankings

#364 in Other extensions ▼ 3

#1 in sell keyword 23

#5 in bulk keyword 28

#6 in steam keyword 49

#35 in item keyword 53

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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

k5md

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/steam-bulk-sell/

Email:

k5*****@yandex.ru

Website:

https://github.com/k5md/Steam-Bulk-Sell-webextension/issues

Permission Change History

2025-07-26: Version 1.1.6 → 1.2.1

Add Permissions: cookies contextualIdentities webRequest webRequestBlocking

2024-12-28: Version 1.1.5 → 1.1.6

Add Permissions: *://steamcommunity.com/id/*/inventory*

2023-07-01: Version 1.1.4 → 1.1.5

Add Permissions: *://steamcommunity.com/profiles/*/inventory* *://steamcommunity.com/market/sellitem/*

Remove Permissions: https://steamcommunity.com/profiles/*/inventory/* http://steamcommunity.com/profiles/*/inventory/* https://steamcommunity.com/id/*/inventory/* http://steamcommunity.com/id/*/inventory/* https://steamcommunity.com/profiles/*/inventory http://steamcommunity.com/profiles/*/inventory https://steamcommunity.com/id/*/inventory http://steamcommunity.com/id/*/inventory https://steamcommunity.com/market/sellitem/*

User Reviews

Users find the add-on simple and very helpful for bulk listing, and it generally works for many items. Major recurring issues are inconsistent reliability (works for some items but fails for others), problems fetching item prices, and authentication/session errors (including 2FA-related failures). Overall useful but flaky for some workflows.

Pros

Easy to use / simple interface
Effectively lists and sells many items in bulk (time-saver)
Often works for a majority of items — does what it says

Cons

Inconsistent reliability — frequently fails or only works part of the time
Fails to fetch prices for some items
Authentication-related errors (session mismatch, 2FA/auth link problems) that stop sales

Recent reviews

by ad*****, 2026-06-16

easy use

by Be*****, 2025-10-29

It worked for like 60% of my trading cards, then the rest I don't know what could be happening but the addon can't never fetch the prices and sell the items

by Fi*****, 2025-08-10

View all user reviews ›

Is Steam Bulk Sell Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Steam Bulk Sell requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

High Allows the extension to observe and analyze traffic in flight for the selected hosts.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Steam Bulk Sell is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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