Collecting tips using Firefox.

Turn off sites ask you for notifications

Preferences > Privacy and Security > Permissions >Notifications > Settings > "Block new requests asking to allow notifications"

Zoom with trackpad

Source

Go to about:config.

browser.gesture.pinch.in -> cmd_fullZoomReduce
browser.gesture.pinch.in.shift -> cmd_fullZoomReset
browser.gesture.pinch.latched -> false
browser.gesture.pinch.out -> cmd_fullZoomEnlarge
browser.gesture.pinch.out.shift -> cmd_fullZoomReset

Clear item from the address bar suggestion

highlight the item then shift+delete

Zoom in on console

(Make font-size bigger in developer console):

Type about:config in URL then set devtools.toolbox.zoomValue to a bigger value (1.0).