Here be tweaks I usually have for Firefox:
apz.overscroll.enabled
:false
browser.compactmode.show
:true
browser.eme.ui.enabled
:false
browser.newtabpage.enabled
:false
(disable that stupid grid of tabs)browser.search.suggest.enabled
:false
browser.sessionstore.restore_on_demand
:false
browser.sessionstore.restore_hidden_tabs
:true
browser.sessionstore.restore_tabs_lazily
:false
browser.urlbar.trimURLs
:false
(returns thehttp://
in the URL bar)clipboard.plainTextOnly
:true
dom.allow_cut_copy
:false
dom.event.clipboardevents.enabled
:false
dom.image-lazy-loading.root-margin.*
:1000000
(faster browsing)dom.iframe_lazy_loading.enabled
:false
(same as above)extensions.pocket.enabled
:false
Not sure what the replacement ismedia.autoplay.enabled
:false
(yeah no)media.block-autoplay-until-in-foreground
:true
(well)media.eme.enabled
:false
(yeah no)media.gmp-widevinecdm
:false
(idem)media.gmp-widevinecdm-visible
:false
(idem)mousewheel.min_line_scroll_amount
:50
(faster scroll in a container)mousewheel.system_scroll_override_on_root_content.enabled
:false
(prevent overly fast scrolling because of previous setting)network.IDN_show_punycode
:true
(be safe)network.proxy.socks_remote_dns
:true
(ensuring dual-stack sites are accessible over)permissions.default.shortcuts
:2
(disable sites from capturing browser shortcuts)breaks Rikaichamp.privacy.resistFingerprinting
:true
toolkit.telemetry.unified
:false
toolkit.telemetry.*.enabled
:false