Mozilla Firefox - Mac OS
To clear (delete) the cache using Mozilla Firefox on: macOS High Sierra, macOS Sierra, OS X El Captian, OS X Yosemite, OS X Mavericks, OS X Mountain Lion, Mojave or Catalina:
- On the Firefox window toolbar select History
- Select Clear Recent History...
- Change the Time range to clear drop down to Everything:
- Ensure Cache is checked
- Click Clear Now