Import Dictionary

To move your Firefox dictionary to another profile (works for all versions of Firefox):

  1. Close Firefox (Firefox saves the dictionary file upon closing)
  2. Navigate to your old profile folder (Locate your profile folder)
  3. Copy the file persdict.dat
  4. Navigate to your new profile folder (Locate your profile folder)
  5. Paste and replace the persdict.dat file
  6. Restart Firefox