# OffTheShelf

> オンライン書店のページに価格比較を自動表示します。対応書店は、Amazon.co.jp、ブックオフオンライン、ネットオフ、駿河屋です。 このアドオンは「ブクスバ」に名称変更しました。 最新版はこちらからダウンロードできます。 https://addons.mozilla.org/ja/firefox/addon/%E3%83%96%E3%82%AF%E3%82%B9%E3%83%90/

Canonical page: [https://chrome-stats.com/d/offtheshelf](https://chrome-stats.com/d/offtheshelf)

## Overview

- **ID:** `offtheshelf`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** BooksBar
- **Category:** shopping
- **Daily users:** 7
- **Version:** 1.6.21resigned1
- **Last updated:** 2024-04-25
- **First published:** 2016-07-20
- **Size:** 61 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/offtheshelf/)
- **Website:** [http://booksbar.jp/](http://booksbar.jp/)

## Description

OffTheShelf is a Firefox add-on that automatically displays price comparisons and stock availability on online bookstore pages such as Amazon.co.jp, Bookoff Online, Netoff, and Suruga-ya.

## Rankings

- #39,129 — Overall

## Permissions and access

### Permissions

- `*://*.amazon.co.jp/`
- `*://*.bookoffonline.co.jp/*`
- `*://*.netoff.co.jp/*`
- `*://*.suruga-ya.jp/*`
- `*://*.booksbar.jp/*`
- `*://lab.sugimototatsuo.com/*`
- `storage`
- `unlimitedStorage`

### Content script matches

- `*.amazon.co.jp`
- `*.bookoffonline.co.jp`
- `*.netoff.co.jp`
- `*.suruga-ya.jp`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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- [Kindle Series Sale Tracker](https://chrome-stats.com/d/kindle-series-sale-tracker)
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Source: [Chrome-Stats](https://chrome-stats.com/d/offtheshelf)