You can download/export all the Mass Assign permissions in an the excel sheet for Field Permissions, Object Permissions, Apex Class Permissions, Visualforce Page Permissions, Permission Sets.

  • Go to the Mass Assing Permission App
  • Open the permission tab as per your requirement and select all required fields
  • In the below image Mass Assign Field Permission tab is selected and filled with all values.
  • Then click on the "Fetch Field Permissions" button.
  • After fetching those field permissions, the user can make changes to the selected fields with Read or Edit permissions and click on the Save button to save your changes.
  • Export to Excel: Once you click on this button will get an excel file download. 
  • The excel file will look like this as shown below