# 日本語用コンテキスト検索

> 選択したテキストをコンテキストメニューから検索します 検索エンジンに渡す文字列のコードをUTF-8/Shift\_JIS/EUC-JP/ISO-2022-JPの中から選べます

Canonical page: [https://chrome-stats.com/d/context-search-ja](https://chrome-stats.com/d/context-search-ja)

## Overview

- **ID:** `context-search-ja`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** nepon
- **Category:** search-tools,other
- **Daily users:** 546
- **Weekly downloads:** 3
- **Rating:** 4.89 / 5 (19 ratings)
- **Version:** 0.6.1resigned1
- **Last updated:** 2024-04-25
- **First published:** 2017-10-23
- **Size:** 94 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/context-search-ja/)

## Description

「日本語用コンテキスト検索」は、選択したテキストを右クリックのコンテキストメニューから簡単に検索できるChrome拡張機能です。UTF-8、Shift_JIS、EUC-JP、ISO-2022-JPなどの日本語文字コードから検索エンジンに渡す文字コードを選択可能で、正確な日本語検索が可能です。

拡張機能はウェブ上のアイコン取得と保存のために必要な権限を持ち、Firefoxの異なるバージョンに対応したコンテキストメニュー項目のCSSセレクタも設定されています。日本語テキスト検索を快適にしたいユーザーに最適なツールです。

## Rankings

- #4,748 — Overall

## Permissions and access

### Permissions

- `<all_urls>`
- `activeTab`
- `contextMenus`
- `storage`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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).

## Review summary

Overall, reviews praise the add-on for being very convenient and easy to use, with a handy Japanese-context search accessible from the context menu. It uniquely supports Japanese string searches across sites (a Firefox strength versus Chrome) and offers useful customization options like importing search engines, favicon, and new-tab placement. It is also valued for practical uses such as tracking-number searches for Japanese carriers. Reported downsides include the absence of Chrome support and occasional challenges migrating settings between devices.

### Pros

- Very convenient and easy to use; context-menu Japanese search is handy.
- Supports Japanese string searches across sites (notably not available in Chrome), giving Firefox a distinct advantage.
- Rich customization: import search engines (mozlz4), favicon support, and configurable new-tab behavior.
- Useful for carrier/tracking-number searches (e.g., Japanese carriers).

### Cons

- Chrome compatibility is lacking; users want Chrome support.
- Settings portability across PCs can be problematic due to storage migration.

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Source: [Chrome-Stats](https://chrome-stats.com/d/context-search-ja)