Speed Up Firefox Load Times
If you want to speed up the time it takes for Firefox to load up - especially the first time it is launched in a Windows session, you can do so by letting Firefox make better use of the Windows Prefetch functionality. By most accounts this tweak doesn't actually do anything, however since it's harmless you can follow these instructions to implement it:
1. Go to the main icon you use to launch Firefox, and right-click on it, then select Properties.
2. In the Properties box, under the Target box add a single space after the last quote mark, and add "/Prefetch:1".For example your target box should look similar to this:
"C:\Program Files\Mozilla Firefox\firefox.exe" /Prefetch:1
3. Click OK to close the Properties box, and repeat this process for all the icons you use to launch Firefox.
Note, if you use a shortcut for Firefox which is pinned in your Windows Start menu, it will automatically be updated if you change all existing Firefox icons/shortcuts, since any pinned shortcuts always relate to the original shortcut/icon they were pinned from. Again, this tweak is likely to be useless, but is included for the sake of completeness.