Extract files using CSV file
Here all steps are similar to ‘Export files using SOQL Query’ except ‘input type’ (number 2 marked in red in the following pic).
Please select ‘CSV File’ as input type. Click on ‘Choose File’ and select the CSV File.
Point to keep in mind here is, first column in the CSV file must be Salesforce Attachment/Files Id, otherwise you will get an exception.
After inputting all the required fields click on ‘Export Files/Attachments from Salesforce’ to start the export of files from Salesforce to your local machine.