[ENHANCEMENT] Some firefox 151 prefs to consider #291

degausser commented 2026年05月19日 15:42:34 +02:00

https://www.firefox.com/en-US/firefox/151.0/releasenotes/

The new Fullscreen Keyboard Lock API adds an optional argument to requestFullscreen that allows websites to request that while fullscreen, pressing the Escape key will no longer exit fullscreen (instead, a long-press is required), and certain formerly-reserved browser hotkeys are allowed to be default-prevented.

https://developer.mozilla.org/en-US/docs/Web/API/Element/requestFullscreen#keyboard_locking

dom.fullscreen.keyboard_lock.enabled->false

Firefox now supports the Document Picture-in-Picture API, which allows web pages to place content in an always-on-top popup.

https://developer.mozilla.org/en-US/docs/Web/API/Document_Picture-in-Picture_API

dom.documentpip.enabled->false

---

also, caught my eye

Private Browsing Mode now allows you to instantly clear all data from your current session without closing the entire window. When you select the End Private Session button (the fire icon) to the right of the URL bar, Firefox will ask you to confirm to clear your session. Once confirmed, it will wipe all of your private browsing data and open a fresh new Private Browsing Mode session for you.

browser.privatebrowsing.resetPBM.enabled [DEFAULT - Nightly]->[DEFAULT]

https://www.firefox.com/en-US/firefox/151.0/releasenotes/ >The new Fullscreen Keyboard Lock API adds an optional argument to requestFullscreen that allows websites to request that while fullscreen, pressing the Escape key will no longer exit fullscreen (instead, a long-press is required), and certain formerly-reserved browser hotkeys are allowed to be default-prevented. https://developer.mozilla.org/en-US/docs/Web/API/Element/requestFullscreen#keyboard_locking dom.fullscreen.keyboard_lock.enabled->false >Firefox now supports the Document Picture-in-Picture API, which allows web pages to place content in an always-on-top popup. https://developer.mozilla.org/en-US/docs/Web/API/Document_Picture-in-Picture_API dom.documentpip.enabled->false ___ also, caught my eye >Private Browsing Mode now allows you to instantly clear all data from your current session without closing the entire window. When you select the End Private Session button (the fire icon) to the right of the URL bar, Firefox will ask you to confirm to clear your session. Once confirmed, it will wipe all of your private browsing data and open a fresh new Private Browsing Mode session for you. browser.privatebrowsing.resetPBM.enabled `[DEFAULT - Nightly]`->`[DEFAULT]`

celenity commented 2026年05月19日 21:36:36 +02:00

Thank you! Added both dom.fullscreen.keyboard_lock.enabled and dom.documentpip.enabled - good catches. Also updated the tag for browser.privatebrowsing.resetPBM.enabled! :)

Thank you! Added both `dom.fullscreen.keyboard_lock.enabled` and `dom.documentpip.enabled` - good catches. Also updated the tag for `browser.privatebrowsing.resetPBM.enabled`! :)