Standard protection

This option will give you a great balance of performance and protection. Here, the pages will load normally.

Firefox blocks the following under standard protection:
Social media trackers
Cross-site tracking cookies
Cross-site cookies in Private Windows
Tracking content in Private Windows
Cryptominers
Fingerprinters

Strict Mode

This option offers more protection but may cause certain sites and content to crash.

Firefox blocks the following:
Social media trackers
Cross-site cookies in all windows (includes tracking cookies)
Tracking content in all windows
Cryptominers
Fingerprinters

Custom Protection

This mode allows you to pick and choose the sites that you want to allow so that the browser can then apply the strict safety protocols to the rest.