Upgrade to FolderSizes 5

To qualify for FolderSizes 5 upgrade pricing, you must own a license for a previous version. Note that it can be any previous version (e.g. 1.x, 2.x, 3.x, or 4.x).

Please provide your existing FolderSizes license key in order to upgrade. If you currently have FolderSizes installed, you can find your existing license key within the application itself (through Help | About). Another option is to locate the license email you were sent (via email) immediately after you purchased (it will contain your license key).

Enter your Duplicate File Detective license key into the field below and click "Validate Now" to proceed.