Enable import from a file (Firefox)

To import passwords to Firefox you may need to enable the file import feature.

Enable import from a file (Firefox)

Firefox can import passwords from a CSV file, but the import feature may not be enabled. This is because it is a relatively new feature and was first made available in Firefox version 80.

There seem to be performance issues when this feature is turned on. For best web browsing experience, turn the feature on, import your passwords, and then turn the feature back off.

Turn on Firefox password import feature

Follow these steps to enable the Firefox file import feature.

1) Start Mozilla Firefox web browser

Start a Firefox web browser on your computer.

Mozilla Firefox web browserStart Firefox

2) Open Firefox advanced configuration preferences

To open Firefox advanced configuration preferences:

  1. Type about:config in the Firefox address bar
  2. Click on the "Accept the Risk and Continue" button

Don't worry about the "Proceed with Caution" warning. After you enable this feature and import your passwords to Firefox, you will disable the feature again.

Firefox advanced configuration preferencesOpen Firefox advanced configuration preferences

3) Enable Firefox import from a file feature

You are now in the Firefox advanced configuration preferences section. To enable import from a file feature:

Type signon.management.page.fileImport.enabled in the search box (Step 1).

Then click on the toggle button to turn it on (Step 2).

signon.management.page.fileImport.enabled Firefox advanced configuration preferenceTurn on signon.management.page.fileImport.enabled feature

Firefox import from a file feature is now ENABLED

Check that the import from a file feature is now enabled. It should be bold and set to true.

signon.management.page.fileImport.enabled = true

signon.management.page.fileImport.enabled = truesignon.management.page.fileImport.enabled = true

Continue importing your passwords to Firefox

Now that you turned on the Firefox feature that enables importing passwords from a file, go back to Step 3 in the import passwords to Firefox guide.