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Notes: view a group of preferences in Firefox about:config

Viewing groups of preferences is useful when reviewing, troubleshooting, or for toggles.

In newer versions of Firefox, bookmarks of the style about:config?filter=... no longer populate the search box,
they just open about:config now. However, we can style a about:config?filter=... bookmark that you can open and drag (or copy/paste) the link text into the about:config search box...

Create about:config link/bookmark

Form the link in this style (and optionally bookmark it):

about:config?filter=/^\*$|^(webgl\.disabled|media\.peerconnection\.enabled)(;|$)|^$/i

(Optional) Create the link from a list of preferences

Optionally, paste your list of preferences into Box 4 of userjs-tool.html, then click the [To Group] button to help create the link.

Note: userjs-tool.html is standard HTML/JavaScript that runs client sidethere is no uploading or external dependency/connection other than fetching text files (eg arkenfox user.js from GitHub) initiated by user action (or by specifying url parameters). It does not directly edit (or read) about:config or user.js, and web browser security ensures that the user controls the load/save of local files.

Using the link/bookmark

Just open the about:config page and paste (or drag) the link into the search box

  • Example 1 (open and drag):

    • open the about:config page
      ie: click on the about:config... bookmark

    • drag the [(Logo) Firefox]* into the about:config search box
      (*the "button" shown in front of the URL address box)

  • Example 2 (copy, open, paste):

    • copy the link
      ie: right click on the about:config... bookmark and choose Copy
      (tip: press and hold the right mouse button release on Copy)

    • open the about:config page
      ie: click on the about:config... bookmark
      or paste the link into the URL box

    • paste the link into the about:config search box
      (tip: press and hold the right mouse button release on Paste)

  • Example 3 (open, copy, paste):

    • open the about:config page
      ie: click on the about:config... bookmark

    • copy the link
      ie: right click in the URL box and Copy the link
      (tip: press and hold the right mouse button release on Copy)

    • paste the link into the about:config search box
      (tip: press and hold the right mouse button release on Paste)

Examples

These links generate groups of preferences (the text files specified are fetched):

  • prefs from arkenfox troubleshooter.js (fetches arkenfox troubleshooter.js file from GitHub)

    • eg bookmark named "about:config arkenfox troubleshooter v1.6.3 prefs plus others" containing link:
      (note: use the link above to get the latest list, below is v1.6.3 plus some extra prefs)
      about:config?filter=/^\*$|^(=====FROM-ARKENFOX-TROUBLESHOOTER-V1.6.3-PLUS-OTHERS=====|accessibility\.force_disabled|privacy\.trackingprotection\.socialtracking\.enabled|privacy\.trackingprotection\.cryptomining\.enabled|privacy\.trackingprotection\.fingerprinting\.enabled|webgl\.disabled|javascript\.options\.ion|javascript\.options\.baselinejit|javascript\.options\.jit_trustedprincipals|=====START-OF-ARKENFOX-TROUBLESHOOTER-PREFS=====|media\.peerconnection\.enabled|network\.cookie\.cookieBehavior|network\.http\.referer\.XOriginPolicy|privacy\.firstparty\.isolate|privacy\.resistFingerprinting|security\.mixed_content\.block_display_content|svg\.disabled|browser\.cache\.offline\.enable|dom\.storage\.enabled|dom\.storageManager\.enabled|dom\.caches\.enabled|dom\.push\.connection\.enabled|dom\.push\.enabled|dom\.push\.serverURL|dom\.serviceWorkers\.enabled|dom\.webnotifications\.enabled|dom\.webnotifications\.serviceworker\.enabled|browser\.display\.use_document_fonts|font\.blacklist\.underline_offset|gfx\.font_rendering\.graphite\.enabled|gfx\.font_rendering\.opentype_svg\.enabled|layout\.css\.font-loading-api\.enabled|browser\.link\.open_newwindow\.restriction|canvas\.capturestream\.enabled|dom\.event\.clipboardevents\.enabled|dom\.event\.contextmenu\.enabled|dom\.IntersectionObserver\.enabled|dom\.popup_allowed_events|full-screen-api\.enabled|intl\.accept_languages|javascript\.options\.asmjs|javascript\.options\.wasm|permissions\.default\.shortcuts|dom\.vr\.enabled|media\.ondevicechange\.enabled|dom\.webaudio\.enabled|media\.autoplay\.default|media\.autoplay\.blocking_policy|browser\.formfill\.enable|signon\.autofillForms|signon\.formlessCapture\.enabled|security\.cert_pinning\.enforcement_level|security\.family_safety\.mode|security\.OCSP\.require|security\.pki\.sha1_enforcement_level|security\.ssl\.require_safe_negotiation|security\.ssl\.treat_unsafe_negotiation_as_broken|security\.ssl3\.dhe_rsa_aes_128_sha|security\.ssl3\.dhe_rsa_aes_256_sha|security\.ssl3\.ecdhe_ecdsa_aes_128_sha|security\.ssl3\.ecdhe_rsa_aes_128_sha|security\.ssl3\.rsa_aes_128_sha|security\.ssl3\.rsa_aes_256_sha|security\.ssl3\.rsa_des_ede3_sha|security\.tls\.enable_0rtt_data|security\.tls\.version\.max|security\.tls\.version\.min|plugin\.default\.state|plugin\.state\.flash|dom\.popup_maximum|geo\.provider\.network\.url|layout\.css\.visited_links_enabled|mathml\.disabled|network\.auth\.subresource-http-auth-allow|network\.http\.redirection-limit|network\.protocol-handler\.external\.ms-windows-store|privacy\.trackingprotection\.enabled|security\.data_uri\.block_toplevel_data_uri_navigations|privacy\.window\.name\.update\.enabled)(;|$)|^$/i

  • prefs from arkenfox user.js (fetches arkenfox user.js file from GitHub)

    • you would not bookmark these, you view them using the links shown, and you would enfore them using a user.js (see arkenfox)