--- title: Multiple Firefox profiles slug: Mozilla/Firefox/Multiple_profiles tags: - Firefox - QA - イントロ - ガイド - プロファイル - 初心者 translation_of: Mozilla/Firefox/Multiple_profiles ---

Firefox のプロファイルは、ユーザーが Firefox のコピーに作成またはインストールした設定、カスタマイズ、アドオン、その他のパーソナライズの集合です。プロファイルに関する詳細は、Mozilla のエンドユーザサポートサイトを参照してください。

複数のプロファイルを持つ理由

カジュアルなユーザーは、家族ごとに異なるプロファイルを使用することができます。プロファイルを別にすると、それぞれの人が独自のブックマーク、設定、アドオンを持つことができます。

Web 開発者は Web サイト、アプリケーション、またはさまざまな Firefox チャンネル上の他のプロジェクトをテストするためのセカンダリプロファイルを必要とするかもしれません。たとえば、Web 開発用にいくつかの拡張機能をインストールしたいが、汎用の Web ブラウジング用にはインストールしたくないかもしれません。 Nightly チャンネルを使用している間、アドオン開発者がそれらを更新する機会を得るまで、新しい API の変更と一時的に互換性がなくなったアドオンが発生することがあります。このようなアドオンは、他のプロファイルで使用できるようにしながら、 Nightly のためのプロファイルから削除できます。

QA、テスト、およびバグトリアージングの貢献者のために、それぞれ独自のプロファイルを持つ複数の開発版 Firefox をインストールしたい場合があります。テスト用の新しいプロファイルを作成すると、環境設定、ブックマーク、および履歴が失われないようにすることができます。新しいプロファイルを設定するには少し時間がかかります。完了すると、すべての Firefox バージョンが別々に更新され、同時に実行できます。

利用可能なブラウザ開発チャンネル

4つの利用可能なチャンネルがあり、それぞれは異なるレベルの安定性と開発レベルに対応しています。 4つのチャンネルは Release, Beta, Developer Edition, and Nightlyです。 Release チャンネルは "公式なリリース" であり、たいていのユーザーに推奨されます。しかしながら、より冒険好きなユーザーに対しては、ほかの3つのチャンネルを使用して Firefox の新機能を見て、試すことができます。 Beta チャンネルは次のリリースで公開される予定の機能を含んでおりテストの最終段階にあたります。 Aurora (Developer Edition) はまだ Beta ほど安定していない実験的な機能を含んでいます。 Nightly は Firefox 開発者からの最新のコードが含まれており、最も安定していないチャンネルです。

サードパーティのツール

組み込みのプロファイルマネージャーと外部のプロファイルマネージャーに加えて、複数のプロファイルで作業するのを容易にするサードパーティ製のツールがいくつかあります。

このリストは決して網羅的ではありません。発見した便利なツールをリストに追加してください！

Mac OS X

Multifirefox by Dave Martorana

プロファイル管理

Firefox の実行中のプロファイルの決定

Windows, macOS or Linux で現在実行している Firefox インスタンスのプロファイルを決定するには、次のようにします。

ブラウザーの URL 検索バーに about:profiles と入力します。
表示されるページでは、すべてのプロファイルの一覧が表示されます。それぞれの先頭は "プロファイル:" に続いてそのプロファイルの名前が表示されています。
現在実行している Firefox インスタンスのプロファイルの下には "これは使用中のプロファイルです" という太字のテキストが表示されます。例えば、 "プロファイル: Suzie" という項目の下にそのテキストがあれば、 Suzie という名前のプロファイルを実行していることになります。

希望のプロファイルで Firefox を起動する

You cannot change the profile while Firefox is running. Although it is possible in some cases to have multiple instances of Firefox running in different profiles, to avoid confusion, you should first exit/quit/terminate all running instances of Firefox, FirefoxDeveloperEdition or Nightly. Then follow the instructions below, applicable to your operating system.

Windows

Windows XP

Click the Start button.
Click "Run".
Type firefox --ProfileManager.

Windows Vista/7

Click the Start button.
Click the search bar at the bottom.
Type firefox --ProfileManager.

Windows 8/8.1

Press "Windows + R" on your keyboard.
Type firefox --ProfileManager.

If the Profile Manager window does not open, Firefox may have been running in the background, even though it was not visible. Close all instances of Firefox, or restart the computer, and then try again.

Linux

If Firefox is already included in your Linux distribution, or if you have installed Firefox with the package manager of your Linux distribution:

At the top of the Firefox window, click on the File menu and select Quit.
In Terminal run firefox --ProfileManager

macOS

Run the Terminal application, which is found in Applications/Utilities.
Type or paste in the path to Firefox, followed by .app/Contents/MacOS/firefox. For example, if Firefox is installed in the recommended location, you would enter /Applications/Firefox.app/Contents/MacOS/firefox.
If you have the path to your desired profile handy, enter a space character, followed by -profile followed by another space character, followed by the full path to the profile folder you wish to launch into. This will launch Firefox immediately. Otherwise, enter a space character followed by --profilemanager. This will present the Profile Manager window in which you can make your selection.
Hit return.

Here is a complete example Terminal command from steps 2-3:

/Applications/Firefox.app/Contents/macOS/firefox -profile /Users/Suzie/Library/Application\ Support/Firefox/Profiles/r99d1z7c.default

If you want to do this frequently and more easily, you may wish to create an Automator application, as explained in this tutorial.

プロファイルの作成

Creating a profile through the Profile Manager

These instructions should be the same for all operating systems.

To start the Create Profile Wizard, click "Create Profile..." in the Profile Manager.
Click Next and enter the name of the profile. Use a profile name that is descriptive, such as your personal name. This name is not exposed to the Internet.
You can also choose where to store the profile on your computer. To select storage location, click Choose Folder....
If you choose your folder location for the profile, select a new or empty folder. If you choose a folder that isn't empty, and you later remove the profile and choose the \"Delete Files\" option, everything inside that folder will be deleted.
To create the new profile, click Finish.

Creating a profile through the Firefox browser

You can create a new Firefox profile directly from the browser.

Type about:profiles into the browser URL search bar
On the page, click Create a New Profile button
Read the introduction, and click Next
Enter a profile name for your new Profile. Use a profile name that is descriptive, such as your personal name. This name is not exposed to the Internet.
Optionally, to change where the profile will be stored on your computer, click Choose Folder...
To create the new profile, click Finish.

プロファイルの削除

In the Profile Manager, select the profile to remove, and click Delete Profile....
Confirm that you wish to delete the profile:
- Don't Delete Files removes the profile from the Profile Manager yet retains the profile data files on your computer in the storage folder so that your information is not lost. "Don't Delete Files" is the preferred option, because it saves the old profile's folder, allowing you to recover the files to a new profile.
- Delete Files removes the profile and its files, including the profile bookmarks, settings, passwords, etc.
  
  {{ warning("If you use the \"Delete Files\" option, the profile folder, and files will be deleted. This action cannot be undone.") }}
- Cancel interrupts the profile deletion.

プロファイルの名前変更

In the Profile Manager, select the profile you want to rename, and then click "Rename Profile".
Enter a new name for the profile and click on OK.

Note: The folder containing the files for the profile is not renamed.

オプション

オフライン作業

Choosing this option loads the selected profile, and starts Firefox offline. You can view previously viewed web pages, and experiment with your profile.

Don't ask at startup

If you have multiple profiles, Firefox prompts you for the profile to use each time you start Firefox. Select this option to allow Firefox to load the selected profile, without prompting at startup.

Note: To access other profiles after selecting this option, you must start the Profile Manager first.

プロファイルの使用

Windows

If you want to have the profile manager to pop up each time you start Firefox, so you can choose a profile, you will need to edit the "Target" of the launch icon. To do this:

Right-click the icon and choose "Properties".
When the properties dialog box pops up, you should see a "Target" text field that you can edit, and it should show the current file path.
After the closing quote, add -ProfileManager.
Click Ok.

Now whenever you double click that icon, the profile manager should appear, allowing you to choose which profile you'd like to use.

If you want individual icons to launch specific profiles, you will need to edit the "Target" of each icon. To do this:

Right-click the icon and choose "Properties".
When the properties dialog box pops up, you should see a "Target" text field that you can edit, and it should show the current file path.
To permanently set a specific profile, add -p PROFILE_NAME to the target path, but outside of the quotes, replacing "PROFILE_NAME" with the actual profile name you chose.
If you would also like to allow multiple instances of Firefox to run at the same time, add -no-remote after the profile name.

Once you are all done, click Ok. Do this for each icon you'd like to have a specific profile for. Once done, each one should automatically start with the specified profile.

Linux

There is no extremely straightforward way to create custom application launchers in Gnome 3 like there was in Gnome 2. The following tutorial will help get you going overall: Gnome 3 Custom application launcher. Once you get to the point of adding a new item, you can have the profile dialog show up every time or set the launcher to launch a specific profile.

If you want to have the profile manager to pop up each time you start Firefox, so you can choose a profile, you will need to set the command line for your new launcher.

Set the "command" text field to target the executable file, likely "/usr/bin/firefox", and add the -p parameter.

If you want individual icons to launch specific profiles, you will need to set the command line for your new launcher. To do this:

Set the "command" text field to target the executable file, likely "/usr/bin/firefox", and add the -p PROFILE_NAME parameter, replacing "PROFILE_NAME" with the specific profile.
Repeat as necessary, for each additional profile you want to set.
If you would also like to allow multiple instances of Firefox to run at the same time, add "-no-remote" after the profile name.

Mac OS X

You can find a useful tutorial to set up custom launchers here: Managing Multiple Firefox Profiles in OSX. Do note it's best to follow all steps in the "Creating the scripts" section, including the "edit Info.plist" step. Leave off the profile name if you want the profile selector to show up every time you launch.

さまざまな Firefox チャンネル用に複数のプロフィールを設定する

This section will be especially helpful if you are a developer, wanting to work with multiple channels, and each having their separate launcher.

Windows

In Windows, the Developer and Nightly builds get their own directory in the "Programs" folder, so you don't have to worry about where to store the downloaded files. However, all three will attempt to use the same profile by default. You won't want to keep this behavior, because the different channels have different levels of features. To set each launcher, follow the Windows instructions at Windows Launcher.

Linux

In Linux, things aren't as automatically set up. You will likely get a prompt to download a tar.bz2 file to extract from. Extract the files to a new directory, and use the new launcher instructions from here. The only change you will need to make is the command path. You will want to set it to the directory where you extracted the Firefox channel's tar.bz2 file, and the executable "firefox" file located within this directory. The remaining profile assignment methods will remain the same. You will want to, for sure, add the -no-remote part to the end of the command field, so that you could run multiple instances at the same time.

Mac OS X

You can find a useful tutorial to set up custom launchers here: Managing Multiple Firefox Profiles in OSX. Do note it's best to follow all steps in the "Creating the scripts" section, including the "edit Info.plist" step. Also, you'll want to change the path in the do shell script to point to the correct .app file for the Firefox channel you want to target.