One of the most recommended programs to use to defrag your Mac is called iDefrag, which is available for $30.
Also consider freeing up some hard drive space by moving non-essential files to an external USB hard drive or to your iCloud library. Using Software to Defragmentīefore choosing and installing a defrag program for your Mac, make a current backup of all your important files.
Note that Macs running operating systems older than Mac OS 10.2 aren’t compatible with most modern defrag software, so it may be a challenge to find one that will work with this type of system. Downloading many large files, namely video files, can also further fragment your Mac hard drive over time. If your current Mac hard drive is more than 90 percent full, it’s a good idea to use some defragmention software.
