How to clear cache and system junk on a Mac to speed up the system?

Over time, the macOS operating system accumulates a large number of temporary files, logs, application caches, and outdated documents that take up valuable storage space and can cause slowdowns. Regularly cleaning this data helps restore the system's responsiveness and frees up gigabytes of free space.

As a first step, you should use the built-in storage optimization tools. Open System Settings, go to General, and then select Storage. Here, the operating system will clearly show file categories and offer useful recommendations, such as automatically emptying the Trash after 30 days, storing only recent attachments in Mail, and offloading rarely used files to iCloud storage.

For a deeper cleaning of user application caches and system logs, you can manually check specific folders on the disk. Press the key combination to bring up the Finder search bar, select Go to Folder, and enter the path to the user library where temporary application files are stored.