Firefox

list of about: pages

::

about:about

https://developer.mozilla.org/en-US/Firefox/The_about_protocol


Debug logging

https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/HTTP_logging

::

export NSPR_LOG_MODULES=timestamp,nsHttp:5,nsSocketTransport:5,nsStreamPump:5,nsHostResolver:5
export NSPR_LOG_FILE=~/Desktop/log.txt
./firefox

Disable screenshots

extensions.screenshots.disabled -> true

Disable new tab page

browser.newtabpage.enabled -> false