Which additional preferences does Pale Moon have?

Frequently Asked Questions about the Pale Moon browser and their answers.

Moderator: Indalecio

Which additional preferences does Pale Moon have?

Unread postby Moonchild » Thu Nov 07, 2013 11:43 am

Which additional preferences does Pale Moon have?

Pale Moon has a number of additional preferences in about:config (compared to Firefox) to control Pale Moon specific features. Here's an overview and brief explanation of them:

  • browser.display.ignore_accessibility_theme (true/false, v25.0.0+): Allows the user to override the use of accessibility colors in browser content (web pages).
  • browser.display.standalone_images.background_color (text, v15.1+): Determines the background color for stand-alone images in hex ("#rrggbb") or named color ("red", "blue").
  • browser.padlock.shown (true/false, v15.2+): Controls display of the padlock for secure sites.
  • browser.padlock.style (number, v15.2+): Controls the location and style of the padlock.
  • browser.padlock.urlbar_background (number, v15.2+): Controls address bar shading for secure sites.
  • browser.sessionstore.exactPos (true/false, v24.2.0+): Controls whether restored windows will be placed at the exact position they were at in the last session, even if that would be (partially or completely) off-screen. (hidden pref)
  • browser.tabs.resize_immediately (true/false, v24.1.2+): Controls whether tabs will immediately resize to fill the tab bar when a tab is closed.
  • browser.urlbar.rss (true/false, v24.1.0+): Controls whether the web feed icon is shown in the address bar or not when feeds are available.
  • lightweightThemes.animation.enabled (true/false, v24.6.0+): Controls whether animated personas (lightweight themes) are allowed.
  • network.stricttransportsecurity.enabled (true/false, v25.2.0+): Controls whether HSTS (HTTP Strict Transport Security) is enabled. (hidden pref) R
  • prompts.tab_modal.focusSwitch (true/false, v25.2.0+): Controls whether modal dialogs in web pages (e.g. javascript alerts) switch focus to the tab this dialog is presented in or not. Setting this to false prevents the web page from setting focus to the tab with the dialog.
  • security.ssl.allow_unsafe_ocsp_response (true/false, v25.0.0+): Controls whether to ignore an expired state of stapled OCSP responses. If set to true, breaks with RFC6066 (like Firefox) and ignores the fact that stapled OCSP responses may be expired. If false (the default) aborts the connection. (hidden pref)

Details for many of these preferences can be found in the Tweak Guide.

Explanation of (hidden pref): This preference by default does not show up in about:config. To change the value of it, you will have to add a new preference yourself with the exact name and type indicated.
Explanation of R: This preference, when changed, requires you to completely exit (Pale Moon Button -> Exit or File -> Exit) and restart the browser to come into effect.
Last edited by Moonchild on Wed Jan 14, 2015 7:28 pm, edited 13 times in total.
Reason: Added prompts.tab_modal.focusSwitch.
Solutions born from paranoia are never the best solutions. -MC
User avatar
Pale Moon guru
Pale Moon guru
Posts: 10826
Joined: Sun Aug 28, 2011 5:27 pm
Location: Sweden

Return to Frequently Asked Questions (F.A.Q.)

Who is online

Users browsing this forum: No registered users and 1 guest