Step 1 - Download the installer
Click on http://www.piriform.com/defraggler/download/standard and confirm that you want to download the file by clicking on Download File.
Step 2 - Run the installer
After the download has finished, click Run to start installing Defraggler.
Step 3 - Follow the instructions
Just follow the instruction to install Defraggler.
And that's it, you're all done :)
Note: Customers who have purchased Defraggler Professional or Defraggler Business Edition, you can request a new download link using our handy license lookup tool.