How to Create File Associations for Firefox

You can create file associations for Mozilla Firefox in two ways. The first way is to set Firefox as the default browser. When you do this, registered webpage extensions, such as .htm or .html, will automatically be associated with Firefox. This also associates website links with Firefox. However, if you want to associate a non-website extension, such as .txt, with Firefox, you need to do so directly through Windows.

Instructions

Setting Firefox as Default Browser

1. Open Mozilla Firefox.

2. Click "Tools" in the top menu bar, and click "Options." If you cannot see the menu bar, press the "Alt" key.

3. Click the "Advanced" tab of the "Options" window, and click the "General" sub-tab.

4. Click "Check Now" under the bottom "System Defaults" section, and choose to set Firefox as the default browser in the confirmation window. Click "Yes" if a UAC confirmation window also pops up.

5. Check "Always check to see if Firefox is the default browser on startup" to have Firefox maintain itself as the default browser, in case another browser changes your settings. Click "OK" to accept your new settings.

Creating Associations Through Windows 7

1. Click the "Start" button, and select "Computer" to open Windows Explorer.

2. Locate the file type you wish to associate with Firefox.

3. Right-click the file, select "Open with" and click "Choose default program."

4. Click the arrow next to "Other programs" in the "Open with" window. Click Firefox in the list. Alternatively, click "Browse," locate your Firefox program, and click "Open."

5. Check "Always use the selected program to open this kind of file" and press "OK." This creates or changes the file's associated program to Firefox.