/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* The prefs in this file are shipped with the GRE and should apply to all
* embedding situations. Application-specific preferences belong somewhere else,
* for example xpfe/bootstrap/browser-prefs.js
*
* Platform-specific #ifdefs at the end of this file override the generic
* entries at the top.
*/
/*
* SYNTAX HINTS:
*
* - Dashes are delimiters; use underscores instead.
* - The first character after a period must be alphabetic.
* - Computed values (e.g. 50 * 1024) don't work.
*/
#include network/base/security-prefs.js
pref("keyword.enabled", false);
pref("general.useragent.locale", "chrome://global/locale/intl.properties");
pref("general.useragent.compatMode.gecko", false);
pref("general.useragent.compatMode.firefox", false);
pref("general.useragent.compatMode.version", "68.0");
pref("general.useragent.appVersionIsBuildID", false);
// This pref exists only for testing purposes. In order to disable all
// overrides by default, don't initialize UserAgentOverrides.jsm.
pref("general.useragent.site_specific_overrides", true);
pref("general.config.obscure_value", 13); // for MCD .cfg files
pref("general.warnOnAboutConfig", true);
// maximum number of dated backups to keep at any time
pref("browser.bookmarks.max_backups", 5);
// Delete HTTP cache v1 data
pref("browser.cache.auto_delete_cache_version", 0);
// Preference for switching the cache backend, can be changed freely at runtime
// 0 - use the old (Darin's) cache
// 1 - use the new cache back-end (cache v2)
pref("browser.cache.backend", 1);
pref("browser.cache.disk.enable", true);
// Is this the first-time smartsizing has been introduced?
pref("browser.cache.disk.smart_size.first_run", true);
// Does the user want smart-sizing?
pref("browser.cache.disk.smart_size.enabled", true);
// Which max value should we use for smart-sizing?
pref("browser.cache.disk.smart_size.use_old_max", true);
// Size (in KB) explicitly set by the user. Used when smart_size.enabled == false
pref("browser.cache.disk.capacity", 256000);
// When smartsizing is disabled we could potentially fill all disk space by
// cache data when the disk capacity is not set correctly. To avoid that we
// check the free space every time we write some data to the cache. The free
// space is checked against two limits. Once the soft limit is reached we start
// evicting the least useful entries, when we reach the hard limit writing to
// the entry fails.
pref("browser.cache.disk.free_space_soft_limit", 5120); // 5MB
pref("browser.cache.disk.free_space_hard_limit", 1024); // 1MB
// Max-size (in KB) for entries in disk cache. Set to -1 for no limit.
// (Note: entries bigger than 1/8 of disk-cache are never cached)
pref("browser.cache.disk.max_entry_size", 51200); // 50 MB
pref("browser.cache.memory.enable", true);
// -1 = determine dynamically, 0 = none, n = memory capacity in kilobytes
//pref("browser.cache.memory.capacity", -1);
// Max-size (in KB) for entries in memory cache. Set to -1 for no limit.
// (Note: entries bigger than than 90% of the mem-cache are never cached)
pref("browser.cache.memory.max_entry_size", 5120);
// Memory limit (in kB) for new cache data not yet written to disk. Writes to
// the cache are buffered and written to disk on background with low priority.
// With a slow persistent storage these buffers may grow when data is coming
// fast from the network. When the amount of unwritten data is exceeded, new
// writes will simply fail. We have two buckets, one for important data
// (priority) like html, css, fonts and js, and one for other data like images,
// video, etc.
// Note: 0 means no limit.
pref("browser.cache.disk.max_chunks_memory_usage", 10240);
pref("browser.cache.disk.max_priority_chunks_memory_usage", 10240);
pref("browser.cache.disk_cache_ssl", true);
// 0 = once-per-session, 1 = each-time, 2 = never, 3 = when-appropriate/automatically
pref("browser.cache.check_doc_frequency", 3);
// Limit of recent metadata we keep in memory for faster access, in Kb
pref("browser.cache.disk.metadata_memory_limit", 250); // 0.25 MB
// The number of chunks we preload ahead of read. One chunk has currently 256kB.
pref("browser.cache.disk.preload_chunk_count", 4); // 1 MB of read ahead
// The half life used to re-compute cache entries frecency in hours.
pref("browser.cache.frecency_half_life_hours", 6);
// Number of seconds the cache spends writting pending data and closing files
// after the shutdown has been signalled. Past that time data are never written
// and files are left open given up to the OS to do the cleanup.
pref("browser.cache.max_shutdown_io_lag", 2);
pref("browser.cache.offline.enable", true);
// enable offline apps by default, disable prompt
pref("offline-apps.allow_by_default", true);
// offline cache capacity in kilobytes
pref("browser.cache.offline.capacity", 512000);
// the user should be warned if offline app disk usage exceeds this amount
// (in kilobytes)
pref("offline-apps.quota.warn", 51200);
// zlib compression level used for cache compression:
// 0 => disable compression
// 1 => best speed
// 9 => best compression
// cache compression turned off for now - see bug #715198
pref("browser.cache.compression_level", 0);
// Don't show "Open with" option on download dialog if true.
pref("browser.download.forbid_open_with", false);
// Save download locations as a content preference
pref("browser.download.lastDir.savePerSite", true);
#ifdef XP_WIN
// Save internet zone information on downloaded files:
// 0 => Never
// 1 => Always
// 2 => Use system setting
pref("browser.download.saveZoneInformation", 2);
#endif
// Whether or not testing features are enabled.
pref("dom.quotaManager.testing", false);
// Whether or not indexedDB experimental features are enabled.
pref("dom.indexedDB.experimental", false);
// Enable indexedDB logging.
pref("dom.indexedDB.logging.enabled", true);
// Detailed output in log messages.
pref("dom.indexedDB.logging.details", true);
// Enable profiler marks for indexedDB events.
pref("dom.indexedDB.logging.profiler-marks", false);
// Whether or not File Handle is enabled.
pref("dom.fileHandle.enabled", true);
// Whether window.onappinstalled from "W3C Web Manifest" is enabled
pref("dom.manifest.onappinstalled", false);
// Whether or not selection events are enabled
pref("dom.select_events.enabled", true);
// Whether or not selection events on text controls are enabled
pref("dom.select_events.textcontrols.enabled", true);
// Whether or not the document visbility API is enabled
pref("dom.visibilityAPI.enabled", true);
// Whether or not Web Workers are enabled.
pref("dom.workers.enabled", true);
// The number of workers per domain allowed to run concurrently.
// We're going for effectively infinite, while preventing abuse.
pref("dom.workers.maxPerDomain", 512);
pref("dom.serviceWorkers.enabled", false);
// The amount of time (milliseconds) service workers keep running after each event.
pref("dom.serviceWorkers.idle_timeout", 30000);
// The amount of time (milliseconds) service workers can be kept running using waitUntil promises.
pref("dom.serviceWorkers.idle_extended_timeout", 300000);
// Enable test for 24 hours update, service workers will always treat last update check time is over 24 hours
pref("dom.serviceWorkers.testUpdateOverOneDay", false);
// Whether nonzero values can be returned from performance.timing.*
pref("dom.enable_performance", true);
// Whether resource timing will be gathered and returned by performance.GetEntries*
pref("dom.enable_resource_timing", true);
// Enable high-resolution timing markers for users
pref("dom.enable_user_timing", true);
// Whether performance.GetEntries* will contain an entry for the active document
pref("dom.enable_performance_navigation_timing", true);
// Enable printing performance marks/measures to log
pref("dom.performance.enable_user_timing_logging", false);
// Enable notification of performance timing
pref("dom.performance.enable_notify_performance_timing", false);
// Enable Permission API's .revoke() method
pref("dom.permissions.revoke.enable", false);
// Enable exposing timeToNonBlankPaint
pref("dom.performance.time_to_non_blank_paint.enabled", false);
// Enable Performance Observer API
pref("dom.enable_performance_observer", true);
// Enable requestIdleCallback API
pref("dom.requestIdleCallback.enabled", true);
// Enable Intersection Observers
// See WD https://www.w3.org/TR/intersection-observer/
pref("dom.intersectionObserver.enabled", true);
#ifdef MOZ_GAMEPAD
// Whether the Gamepad API is enabled
pref("dom.gamepad.enabled", true);
pref("dom.gamepad.test.enabled", false);
pref("dom.gamepad.non_standard_events.enabled", false);
pref("dom.gamepad.extensions.enabled", false);
#endif
// Whether the KeyboardEvent.code is enabled
pref("dom.keyboardevent.code.enabled", true);
// If this is true, TextEventDispatcher dispatches keydown and keyup events
// even during composition (keypress events are never fired during composition
// even if this is true).
pref("dom.keyboardevent.dispatch_during_composition", false);
// Whether URL,Location,Link::GetHash should be percent encoded
// in setter and percent decoded in getter (old behaviour = true)
pref("dom.url.encode_decode_hash", true);
// Whether ::GetHash should do percent decoding (old behaviour = true)
pref("dom.url.getters_decode_hash", false);
// Whether to run add-on code in different compartments from browser code. This
// causes a separate compartment for each (addon, global) combination, which may
// significantly increase the number of compartments in the system.
pref("dom.compartment_per_addon", true);
// Fastback caching - if this pref is negative, then we calculate the number
// of content viewers to cache based on the amount of available memory.
pref("browser.sessionhistory.max_total_viewers", -1);
// Whether to store 'about:newtab' in the session history, disabled by default.
// See https://github.com/MoonchildProductions/UXP/issues/719
pref("browser.newtabpage.add_to_session_history", false);
// Determines whether the browser's current theme should be light or dark.
// 0 = feature disabled
// 1 = default: light theme
// 2 = dark theme
pref("ui.color_scheme", 1);
pref("ui.use_native_colors", true);
#ifdef MOZ_WIDGET_GTK
// Determines whether the menubar is shown in the global menubar or not.
pref("ui.use_global_menubar", false);
#endif
pref("ui.click_hold_context_menus", false);
// Duration of timeout of incremental search in menus (ms). 0 means infinite.
pref("ui.menu.incremental_search.timeout", 1000);
// If true, all popups won't hide automatically on blur
pref("ui.popup.disable_autohide", false);
pref("browser.display.use_document_fonts", 1); // 0 = never, 1 = quick, 2 = always
// 0 = default: always, except in high contrast mode
// 1 = always
// 2 = never
pref("browser.display.document_color_use", 0);
// 0 = feature disabled
// 1 = default: light theme preferred
// 2 = dark theme preferred
// 3 = match ui.color_scheme
pref("browser.display.prefers_color_scheme", 1);
pref("browser.display.use_system_colors", false);
pref("browser.display.foreground_color", "#000000");
pref("browser.display.background_color", "#FFFFFF");
pref("browser.display.force_inline_alttext", false); // true = force ALT text for missing images to be layed out inline
// 0 = no external leading,
// 1 = use external leading only when font provides,
// 2 = add extra leading both internal leading and external leading are zero
pref("browser.display.normal_lineheight_calc_control", 2);
// enable showing image placeholders while image is loading or when image is broken
pref("browser.display.show_image_placeholders", true);
// if browser.display.show_image_placeholders is true then this controls whether the loading image placeholder and border is shown or not
pref("browser.display.show_loading_image_placeholder", false);
// min font device pixel size at which to turn on high quality
pref("browser.display.auto_quality_min_font_size", 20);
// Background color for standalone images; leave empty to use default
// all CSS colors available: named colors, rgb(..), #rrggbb, ...
pref("browser.display.standalone_images.background_color", "");
pref("browser.anchor_color", "#0000EE");
pref("browser.active_color", "#EE0000");
pref("browser.visited_color", "#551A8B");
pref("browser.underline_anchors", true);
pref("browser.enable_automatic_image_resizing", false);
pref("browser.enable_click_image_resizing", true);
// See http://dev.w3.org/html5/spec/forms.html#attr-fe-autofocus
pref("browser.autofocus", true);
// See http://whatwg.org/specs/web-apps/current-work/#ping
pref("browser.send_pings", false);
pref("browser.send_pings.max_per_link", 1); // limit the number of pings that are sent per link click
pref("browser.send_pings.require_same_host", false); // only send pings to the same host if this is true
pref("browser.display.use_focus_colors", false);
pref("browser.display.focus_background_color", "#117722");
pref("browser.display.focus_text_color", "#ffffff");
pref("browser.display.focus_ring_width", 1);
pref("browser.display.focus_ring_on_anything", false);
// focus ring border style.
// 0 = solid border, 1 = dotted border
pref("browser.display.focus_ring_style", 1);
pref("browser.helperApps.alwaysAsk.force", false);
pref("browser.helperApps.neverAsk.saveToDisk", "");
pref("browser.helperApps.neverAsk.openFile", "");
pref("browser.helperApps.deleteTempFileOnExit", false);
// xxxbsmedberg: where should prefs for the toolkit go?
pref("browser.chrome.toolbar_tips", true);
// 0 = Pictures Only, 1 = Text Only, 2 = Pictures and Text
pref("browser.chrome.toolbar_style", 2);
// max image size for which it is placed in the tab icon for tabbrowser.
// if 0, no images are used for tab icons for image documents.
pref("browser.chrome.image_icons.max_size", 1024);
pref("browser.triple_click_selects_paragraph", true);
// Print/Preview Shrink-To-Fit won't shrink below 20% for text-ish documents.
pref("print.shrink-to-fit.scale-limit-percent", 20);
// Whether we should display simplify page checkbox on print preview UI
pref("print.use_simplify_page", false);
// Disable support for MathML
pref("mathml.disabled", false);
// Enable scale transform for stretchy MathML operators. See bug 414277.
pref("mathml.scale_stretchy_operators.enabled", true);
// Set media to be dormant if paused for more than 15 seconds to reduce resources.
pref("media.dormant-on-pause-timeout-ms", 15000);
// Audio backend override
pref("media.cubeb.backend", "");
// Media cache size in kilobytes
pref("media.cache_size", 512000);
// When a network connection is suspended, don't resume it until the
// amount of buffered data falls below this threshold (in seconds).
pref("media.cache_resume_threshold", 999999);
// Stop reading ahead when our buffered data is this many seconds ahead
// of the current playback position. This limit can stop us from using arbitrary
// amounts of network bandwidth prefetching huge videos.
pref("media.cache_readahead_limit", 999999);
// Master HTML5 media volume scale.
pref("media.volume_scale", "1.0");
// Timeout for wakelock release
pref("media.wakelock_timeout", 2000);
// Whether we should play videos opened in a "video document", i.e. videos
// opened as top-level documents, as opposed to inside a media element.
pref("media.play-stand-alone", true);
pref("media.hardware-video-decoding.enabled", true);
pref("media.hardware-video-decoding.force-enabled", false);
#ifdef MOZ_FMP4
pref("media.mp4.enabled", true);
// Specifies whether the PDMFactory can create a test decoder that
#endif
// just outputs blank frames/audio instead of actually decoding. The blank
// decoder works on all platforms.
pref("media.use-blank-decoder", false);
#ifdef MOZ_WMF
pref("media.wmf.enabled", true);
pref("media.wmf.decoder.thread-count", -1);
pref("media.wmf.low-latency.enabled", false);
pref("media.wmf.skip-blacklist", false);
pref("media.wmf.vp9.enabled", true);
pref("media.windows-media-foundation.allow-d3d11-dxva", true);
pref("media.wmf.disable-d3d11-for-dlls", "igd11dxva64.dll: 20.19.15.4463, 20.19.15.4454, 20.19.15.4444, 20.19.15.4416, 20.19.15.4404, 20.19.15.4390, 20.19.15.4380, 20.19.15.4377, 20.19.15.4364, 20.19.15.4360, 20.19.15.4352, 20.19.15.4331, 20.19.15.4326, 20.19.15.4300; igd10iumd32.dll: 20.19.15.4444, 20.19.15.4424, 20.19.15.4409, 20.19.15.4390, 20.19.15.4380, 20.19.15.4360, 10.18.10.4358, 20.19.15.4331, 20.19.15.4312, 20.19.15.4300, 10.18.15.4281, 10.18.15.4279, 10.18.10.4276, 10.18.15.4268, 10.18.15.4256, 10.18.10.4252, 10.18.15.4248, 10.18.14.4112, 10.18.10.3958, 10.18.10.3496, 10.18.10.3431, 10.18.10.3412, 10.18.10.3355, 9.18.10.3234, 9.18.10.3071, 9.18.10.3055, 9.18.10.3006; igd10umd32.dll: 9.17.10.4229, 9.17.10.3040, 9.17.10.2857, 8.15.10.2274, 8.15.10.2272, 8.15.10.2246, 8.15.10.1840, 8.15.10.1808; igd10umd64.dll: 9.17.10.4229, 9.17.10.2857, 10.18.10.3496; isonyvideoprocessor.dll: 4.1.2247.8090, 4.1.2153.6200; tosqep.dll: 1.2.15.526, 1.1.12.201, 1.0.11.318, 1.0.11.215, 1.0.10.1224; tosqep64.dll: 1.1.12.201, 1.0.11.215; nvwgf2um.dll: 22.21.13.8253, 22.21.13.8233, 22.21.13.8205, 22.21.13.8189, 22.21.13.8178, 22.21.13.8165, 21.21.13.7892, 21.21.13.7878, 21.21.13.7866, 21.21.13.7849, 21.21.13.7654, 21.21.13.7653, 21.21.13.7633, 21.21.13.7619, 21.21.13.7563, 21.21.13.7306, 21.21.13.7290, 21.21.13.7270, 21.21.13.7254, 21.21.13.6939, 21.21.13.6926, 21.21.13.6909, 21.21.13.4201, 21.21.13.4200, 10.18.13.6881, 10.18.13.6839, 10.18.13.6510, 10.18.13.6472, 10.18.13.6143, 10.18.13.5946, 10.18.13.5923, 10.18.13.5921, 10.18.13.5891, 10.18.13.5887, 10.18.13.5582, 10.18.13.5445, 10.18.13.5382, 10.18.13.5362, 9.18.13.4788, 9.18.13.4752, 9.18.13.4725, 9.18.13.4709, 9.18.13.4195, 9.18.13.4192, 9.18.13.4144, 9.18.13.4052, 9.18.13.3788, 9.18.13.3523, 9.18.13.3235, 9.18.13.3165, 9.18.13.2723, 9.18.13.2702, 9.18.13.1422, 9.18.13.1407, 9.18.13.1106, 9.18.13.546; atidxx32.dll: 21.19.151.3, 21.19.142.257, 21.19.137.514, 21.19.137.1, 21.19.134.1, 21.19.128.7, 21.19.128.4, 20.19.0.32837, 20.19.0.32832, 8.17.10.682, 8.17.10.671, 8.17.10.661, 8.17.10.648, 8.17.10.644, 8.17.10.625, 8.17.10.605, 8.17.10.581, 8.17.10.569, 8.17.10.560, 8.17.10.545, 8.17.10.539, 8.17.10.531, 8.17.10.525, 8.17.10.520, 8.17.10.519, 8.17.10.514, 8.17.10.511, 8.17.10.494, 8.17.10.489, 8.17.10.483, 8.17.10.453, 8.17.10.451, 8.17.10.441, 8.17.10.436, 8.17.10.432, 8.17.10.425, 8.17.10.418, 8.17.10.414, 8.17.10.401, 8.17.10.395, 8.17.10.385, 8.17.10.378, 8.17.10.362, 8.17.10.355, 8.17.10.342, 8.17.10.331, 8.17.10.318, 8.17.10.310, 8.17.10.286, 8.17.10.269, 8.17.10.261, 8.17.10.247, 8.17.10.240, 8.15.10.212; atidxx64.dll: 21.19.151.3, 21.19.142.257, 21.19.137.514, 21.19.137.1, 21.19.134.1, 21.19.128.7, 21.19.128.4, 20.19.0.32832, 8.17.10.682, 8.17.10.661, 8.17.10.644, 8.17.10.625; nvumdshim.dll: 10.18.13.6822");
pref("media.wmf.disable-d3d9-for-dlls", "igdumd64.dll: 8.15.10.2189, 8.15.10.2119, 8.15.10.2104, 8.15.10.2102, 8.771.1.0; atiumd64.dll: 7.14.10.833, 7.14.10.867, 7.14.10.885, 7.14.10.903, 7.14.10.911, 8.14.10.768, 9.14.10.1001, 9.14.10.1017, 9.14.10.1080, 9.14.10.1128, 9.14.10.1162, 9.14.10.1171, 9.14.10.1183, 9.14.10.1197, 9.14.10.945, 9.14.10.972, 9.14.10.984, 9.14.10.996");
#endif
#if defined(MOZ_FFMPEG)
pref("media.ffmpeg.enabled", true);
pref("media.libavcodec.allow-obsolete", false);
#endif
#if defined(MOZ_FFVPX)
pref("media.ffvpx.enabled", true);
#endif
#ifdef MOZ_RAW
pref("media.raw.enabled", true);
#endif
pref("media.ogg.enabled", true);
pref("media.opus.enabled", true);
pref("media.wave.enabled", true);
pref("media.webm.enabled", true);
// Filter what triggers user notifications.
// See DecoderDoctorDocumentWatcher::ReportAnalysis for details.
pref("media.decoder-doctor.notifications-allowed", "MediaWMFNeeded,MediaWidevineNoWMFNoSilverlight,MediaCannotInitializePulseAudio,MediaCannotPlayNoDecoders,MediaUnsupportedLibavcodec");
// Whether we report partial failures.
pref("media.decoder-doctor.verbose", false);
// Whether DD should consider WMF-disabled a WMF failure, useful for testing.
pref("media.decoder-doctor.wmf-disabled-is-failure", false);
// Whether to suspend decoding of videos in background tabs.
pref("media.suspend-bkgnd-video.enabled", false);
// Delay, in ms, from time window goes to background to suspending
// video decoders. Defaults to 10 seconds.
pref("media.suspend-bkgnd-video.delay-ms", 10000);
pref("dom.webaudio.enabled", true);
pref("media.getusermedia.screensharing.enabled", true);
pref("media.getusermedia.screensharing.allowed_domains", "webex.com,*.webex.com,ciscospark.com,*.ciscospark.com,projectsquared.com,*.projectsquared.com,*.room.co,room.co,beta.talky.io,talky.io,*.clearslide.com,appear.in,*.appear.in,tokbox.com,*.tokbox.com,*.sso.francetelecom.fr,*.si.francetelecom.fr,*.sso.infra.ftgroup,*.multimedia-conference.orange-business.com,*.espacecollaboration.orange-business.com,free.gotomeeting.com,g2m.me,*.g2m.me,*.mypurecloud.com,*.mypurecloud.com.au,spreed.me,*.spreed.me,*.spreed.com,air.mozilla.org,*.circuit.com,*.yourcircuit.com,circuit.siemens.com,yourcircuit.siemens.com,circuitsandbox.net,*.unify.com,tandi.circuitsandbox.net,*.ericsson.net,*.cct.ericsson.net,*.opentok.com,*.conf.meetecho.com,meet.jit.si,*.meet.jit.si,web.stage.speakeasyapp.net,web.speakeasyapp.net,*.hipchat.me,*.beta-wspbx.com,*.wspbx.com,*.unifiedcloudit.com,*.smartboxuc.com,*.smartbox-uc.com,*.panterranetworks.com,pexipdemo.com,*.pexipdemo.com,pex.me,*.pex.me,*.rd.pexip.com,1click.io,*.1click.io,*.fuze.com,*.fuzemeeting.com,*.thinkingphones.com,gotomeeting.com,*.gotomeeting.com,gotowebinar.com,*.gotowebinar.com,gototraining.com,*.gototraining.com,citrix.com,*.citrix.com,expertcity.com,*.expertcity.com,citrixonline.com,*.citrixonline.com,g2m.me,*.g2m.me,gotomeet.me,*.gotomeet.me,gotomeet.at,*.gotomeet.at,miriadaxdes.miriadax.net,certificacion.miriadax.net,miriadax.net,*.wire.com,sylaps.com,*.sylaps.com,bluejeans.com,*.bluejeans.com,*.a.bluejeans.com,*.bbcollab.com");
// OS/X 10.6 has screen/window sharing off by default due to various issues - Caveat emptor
pref("media.getusermedia.screensharing.allow_on_old_platforms", false);
pref("media.getusermedia.audiocapture.enabled", false);
// TextTrack WebVTT Region extension support.
pref("media.webvtt.regions.enabled", false);
// AudioTrack and VideoTrack support
pref("media.track.enabled", false);
// Whether to enable MediaSource support.
pref("media.mediasource.enabled", true);
pref("media.mediasource.mp4.enabled", true);
#if defined(XP_WIN)
pref("media.mediasource.webm.enabled", false);
#else
pref("media.mediasource.webm.enabled", true);
#endif
pref("media.mediasource.webm.audio.enabled", true);
#ifdef MOZ_AV1
pref("media.av1.enabled", false);
#endif
// Use new MediaFormatReader architecture for plain ogg.
pref("media.flac.enabled", true);
pref("media.ogg.flac.enabled", true);
pref("media.benchmark.vp9.threshold", 150);
pref("media.benchmark.frames", 300);
pref("media.benchmark.timeout", 1000);
#ifdef MOZ_WEBSPEECH
pref("media.webspeech.recognition.enable", false);
pref("media.webspeech.synth.enabled", false);
#endif
#ifdef MOZ_WEBM_ENCODER
pref("media.encoder.webm.enabled", true);
#endif
// Whether to autostart a media element with an |autoplay| attribute
pref("media.autoplay.enabled", true);
// The default number of decoded video frames that are enqueued in
// MediaDecoderReader's mVideoQueue.
pref("media.video-queue.default-size", 10);
// The maximum number of queued frames to send to the compositor.
// By default, send all of them.
pref("media.video-queue.send-to-compositor-size", 9999);
// Whether to disable the video stats to prevent fingerprinting
pref("media.video_stats.enabled", true);
// Weather we allow AMD switchable graphics
pref("layers.amd-switchable-gfx.enabled", true);
// Whether to use async panning and zooming
pref("layers.async-pan-zoom.enabled", true);
// Whether to enable event region building during painting
pref("layout.event-regions.enabled", false);
// APZ preferences. For documentation/details on what these prefs do, check
// gfx/layers/apz/src/AsyncPanZoomController.cpp.
pref("apz.allow_checkerboarding", true);
pref("apz.allow_immediate_handoff", true);
pref("apz.allow_zooming", false);
// Whether to lock touch scrolling to one axis at a time
// 0 = FREE (No locking at all)
// 1 = STANDARD (Once locked, remain locked until scrolling ends)
// 2 = STICKY (Allow lock to be broken, with hysteresis)
pref("apz.axis_lock.mode", 0);
pref("apz.axis_lock.lock_angle", "0.5235987"); // PI / 6 (30 degrees)
pref("apz.axis_lock.breakout_threshold", "0.03125"); // 1/32 inches
pref("apz.axis_lock.breakout_angle", "0.3926991"); // PI / 8 (22.5 degrees)
pref("apz.axis_lock.direct_pan_angle", "1.047197"); // PI / 3 (60 degrees)
pref("apz.content_response_timeout", 400);
pref("apz.drag.enabled", false);
pref("apz.danger_zone_x", 50);
pref("apz.danger_zone_y", 100);
pref("apz.disable_for_scroll_linked_effects", false);
pref("apz.displayport_expiry_ms", 15000);
pref("apz.enlarge_displayport_when_clipped", false);
pref("apz.fling_accel_base_mult", "1.0");
pref("apz.fling_accel_interval_ms", 500);
pref("apz.fling_accel_min_velocity", "1.5");
pref("apz.fling_accel_supplemental_mult", "1.0");
pref("apz.fling_curve_function_x1", "0.0");
pref("apz.fling_curve_function_y1", "0.0");
pref("apz.fling_curve_function_x2", "1.0");
pref("apz.fling_curve_function_y2", "1.0");
pref("apz.fling_curve_threshold_inches_per_ms", "-1.0");
pref("apz.fling_friction", "0.002");
pref("apz.fling_min_velocity_threshold", "0.5");
pref("apz.fling_stop_on_tap_threshold", "0.05");
pref("apz.fling_stopped_threshold", "0.01");
pref("apz.highlight_checkerboarded_areas", false);
pref("apz.max_velocity_inches_per_ms", "-1.0");
pref("apz.max_velocity_queue_size", 5);
pref("apz.min_skate_speed", "1.0");
pref("apz.minimap.enabled", false);
pref("apz.minimap.visibility.enabled", false);
pref("apz.overscroll.enabled", false);
pref("apz.overscroll.min_pan_distance_ratio", "1.0");
pref("apz.overscroll.spring_friction", "0.015");
pref("apz.overscroll.spring_stiffness", "0.0018");
pref("apz.overscroll.stop_distance_threshold", "5.0");
pref("apz.overscroll.stop_velocity_threshold", "0.01");
pref("apz.overscroll.stretch_factor", "0.35");
pref("apz.paint_skipping.enabled", true);
// Fetch displayport updates early from the message queue
pref("apz.peek_messages.enabled", true);
// Whether to print the APZC tree for debugging
pref("apz.printtree", false);
pref("apz.record_checkerboarding", false);
pref("apz.test.logging_enabled", false);
pref("apz.touch_start_tolerance", "0.1");
pref("apz.touch_move_tolerance", "0.03");
pref("apz.velocity_bias", "0.0");
pref("apz.velocity_relevance_time_ms", 150);
pref("apz.x_skate_highmem_adjust", "0.0");
pref("apz.y_skate_highmem_adjust", "0.0");
pref("apz.x_skate_size_multiplier", "1.25");
pref("apz.y_skate_size_multiplier", "3.5");
pref("apz.x_stationary_size_multiplier", "1.5");
pref("apz.y_stationary_size_multiplier", "3.5");
pref("apz.zoom_animation_duration_ms", 250);
pref("apz.scale_repaint_delay_ms", 500);
pref("apz.desktop.enabled", false);
// Use containerless scrolling for now.
pref("layout.scroll.root-frame-containers", false);
// Whether to enable LayerScope tool and default listening port
pref("gfx.layerscope.enabled", false);
pref("gfx.layerscope.port", 23456);
// Log severe performance warnings to the error console and profiles.
// This should be use to quickly find which slow paths are used by test cases.
pref("gfx.perf-warnings.enabled", false);
// Color Management System
// 0 = Off, 1 = All Images, 2 = Tagged Images Only.
// See eCMSMode in gfx/thebes/gfxPlatform.h
// Enabled by default on Windows, disabled elsewhere
#if defined(XP_WIN)
pref("gfx.color_management.mode", 2);
#else
pref("gfx.color_management.mode", 0);
#endif
pref("gfx.color_management.display_profile", "");
pref("gfx.color_management.rendering_intent", 0);
pref("gfx.color_management.enablev4", true);
pref("gfx.downloadable_fonts.enabled", true);
pref("gfx.downloadable_fonts.fallback_delay", 3000);
pref("gfx.downloadable_fonts.fallback_delay_short", 100);
// disable downloadable font cache so that behavior is consistently
// the uncached load behavior across pages (useful for testing reflow problems)
pref("gfx.downloadable_fonts.disable_cache", false);
pref("gfx.downloadable_fonts.woff2.enabled", true);
// Do we fire a notification about missing fonts, so the front-end can decide
// whether to try and do something about it (e.g. download additional fonts)?
pref("gfx.missing_fonts.notify", false);
// prefs controlling the font (name/cmap) loader that runs shortly after startup
pref("gfx.font_loader.families_per_slice", 3); // read in info 3 families at a time
#ifdef XP_WIN
pref("gfx.font_loader.delay", 120000); // 2 minutes after startup
pref("gfx.font_loader.interval", 1000); // every 1 second until complete
#else
pref("gfx.font_loader.delay", 8000); // 8 secs after startup
pref("gfx.font_loader.interval", 50); // run every 50 ms
#endif
// whether to always search all font cmaps during system font fallback
pref("gfx.font_rendering.fallback.always_use_cmaps", false);
// cache shaped word results
pref("gfx.font_rendering.wordcache.charlimit", 32);
// cache shaped word results
pref("gfx.font_rendering.wordcache.maxentries", 10000);
pref("gfx.font_rendering.graphite.enabled", true);
#ifdef XP_WIN
pref("gfx.font_rendering.directwrite.force-enabled", false);
pref("gfx.font_rendering.directwrite.use_gdi_table_loading", true);
#endif
pref("gfx.font_rendering.opentype_svg.enabled", true);
#ifdef XP_WIN
// comma separated list of backends to use in order of preference
// e.g., pref("gfx.canvas.azure.backends", "direct2d,skia,cairo");
pref("gfx.canvas.azure.backends", "direct2d1.1,skia,cairo");
pref("gfx.content.azure.backends", "direct2d1.1,cairo");
#else
// Linux etc.
pref("gfx.canvas.azure.backends", "skia,cairo");
pref("gfx.content.azure.backends", "cairo");
#endif
pref("gfx.canvas.skiagl.dynamic-cache", true);
pref("gfx.text.disable-aa", false);
pref("gfx.work-around-driver-bugs", true);
pref("gfx.prefer-mesa-llvmpipe", false);
pref("gfx.draw-color-bars", false);
pref("gfx.logging.painted-pixel-count.enabled", false);
pref("gfx.logging.texture-usage.enabled", false);
pref("gfx.logging.peak-texture-usage.enabled", false);
pref("gfx.ycbcr.accurate-conversion", false);
pref("accessibility.browsewithcaret", false);
pref("accessibility.warn_on_browsewithcaret", true);
pref("accessibility.browsewithcaret_shortcut.enabled", true);
// Tab focus model bit field:
// 1 focuses text controls, 2 focuses other form elements, 4 adds links.
// Most users will want 1, 3, or 7.
// On OS X, we use Full Keyboard Access system preference,
// unless accessibility.tabfocus is set by the user.
pref("accessibility.tabfocus", 7);
pref("accessibility.tabfocus_applies_to_xul", false);
// We follow the "Click in the scrollbar to:" system preference on OS X and
// "gtk-primary-button-warps-slider" property with GTK (since 2.24 / 3.6),
// unless this preference is explicitly set.
#if !defined(MOZ_WIDGET_GTK)
pref("ui.scrollToClick", 0);
#endif
// provide ability to turn on support for canvas focus rings
pref("canvas.focusring.enabled", true);
pref("canvas.customfocusring.enabled", false);
pref("canvas.hitregions.enabled", false);
pref("canvas.filters.enabled", true);
// Add support for canvas path objects
pref("canvas.path.enabled", true);
pref("canvas.capturestream.enabled", true);
// Disable the ImageBitmap-extensions for now.
pref("canvas.imagebitmap_extensions.enabled", false);
// We want the ability to forcibly disable platform a11y, because
// some non-a11y-related components attempt to bring it up. See bug
// 538530 for details about Windows; we have a pref here that allows it
// to be disabled for performance and testing resons.
// See bug 761589 for the crossplatform aspect.
//
// This pref is checked only once, and the browser needs a restart to
// pick up any changes.
//
// Values are -1 always on. 1 always off, 0 is auto as some platform perform
// further checks.
pref("accessibility.force_disabled", 0);
pref("accessibility.ipc_architecture.enabled", true);
pref("accessibility.AOM.enabled", false);
#ifdef XP_WIN
// Some accessibility tools poke at windows in the plugin process during setup
// which can cause hangs. To hack around this set accessibility.delay_plugins
// to true, you can also try increasing accessibility.delay_plugin_time if your
// machine is slow and you still experience hangs.
// See bug 781791.
pref("accessibility.delay_plugins", false);
pref("accessibility.delay_plugin_time", 10000);
#endif
pref("focusmanager.testmode", false);
pref("accessibility.usetexttospeech", "");
pref("accessibility.usebrailledisplay", "");
pref("accessibility.accesskeycausesactivation", true);
pref("accessibility.mouse_focuses_formcontrol", false);
// Type Ahead Find
pref("accessibility.typeaheadfind", true);
pref("accessibility.typeaheadfind.autostart", true);
// casesensitive: controls the find bar's case-sensitivity
// 0 - "never" (case-insensitive)
// 1 - "always" (case-sensitive)
// other - "auto" (case-sensitive for mixed-case input, insensitive otherwise)
pref("accessibility.typeaheadfind.casesensitive", 0);
pref("accessibility.typeaheadfind.linksonly", true);
pref("accessibility.typeaheadfind.startlinksonly", false);
pref("accessibility.typeaheadfind.timeout", 4000);
pref("accessibility.typeaheadfind.enabletimeout", true);
pref("accessibility.typeaheadfind.soundURL", "beep");
pref("accessibility.typeaheadfind.enablesound", true);
pref("accessibility.typeaheadfind.prefillwithselection", true);
pref("accessibility.typeaheadfind.matchesCountLimit", 1000);
pref("findbar.highlightAll", false);
pref("findbar.modalHighlight", false);
pref("findbar.entireword", false);
pref("findbar.iteratorTimeout", 100);
pref("findbar.termPerTab", false);
// use Mac OS X Appearance panel text smoothing setting when rendering text, disabled by default
pref("gfx.use_text_smoothing_setting", false);
// Number of characters to consider emphasizing for rich autocomplete results
pref("toolkit.autocomplete.richBoundaryCutoff", 200);
// Variable controlling logging for osfile.
pref("toolkit.osfile.log", false);
pref("toolkit.scrollbox.smoothScroll", true);
pref("toolkit.scrollbox.scrollIncrement", 20);
pref("toolkit.scrollbox.verticalScrollDistance", 3);
pref("toolkit.scrollbox.horizontalScrollDistance", 5);
pref("toolkit.scrollbox.clickToScroll.scrollDelay", 150);
// Identity module
pref("toolkit.identity.enabled", false);
pref("toolkit.identity.debug", false);
// AsyncShutdown delay before crashing in case of shutdown freeze
pref("toolkit.asyncshutdown.crash_timeout", 60000);
// Extra logging for AsyncShutdown barriers and phases
pref("toolkit.asyncshutdown.log", false);
// Enable deprecation warnings.
pref("devtools.errorconsole.deprecation_warnings", true);
// Enable performance warnings.
pref("devtools.errorconsole.performance_warnings", true);
// Disable debugging chrome
pref("devtools.chrome.enabled", false);
// Disable remote debugging protocol logging
pref("devtools.debugger.log", false);
pref("devtools.debugger.log.verbose", false);
// Disable remote debugging connections
pref("devtools.debugger.remote-enabled", false);
pref("devtools.debugger.remote-port", 6000);
pref("devtools.debugger.remote-websocket", false);
// Force debugger server binding on the loopback interface
pref("devtools.debugger.force-local", true);
// Display a prompt when a new connection starts to accept/reject it
pref("devtools.debugger.prompt-connection", true);
// Block tools from seeing / interacting with certified apps
pref("devtools.debugger.forbid-certified-apps", true);
// List of permissions that a sideloaded app can't ask for
pref("devtools.apps.forbidden-permissions", "embed-apps");
// DevTools default color unit
pref("devtools.defaultColorUnit", "authored");
// Used for devtools debugging
pref("devtools.dump.emit", false);
// Disable device discovery logging
pref("devtools.discovery.log", false);
// Whether to scan for DevTools devices via WiFi
pref("devtools.remote.wifi.scan", true);
// Whether UI options for controlling device visibility over WiFi are shown
// N.B.: This does not set whether the device can be discovered via WiFi, only
// whether the UI control to make such a choice is shown to the user
pref("devtools.remote.wifi.visible", true);
// Client must complete TLS handshake within this window (ms)
pref("devtools.remote.tls-handshake-timeout", 10000);
// URL of the remote JSON catalog used for device simulation
pref("devtools.devices.url", "https://code.cdn.mozilla.net/devices/devices.json");
// Display the introductory text
pref("devtools.gcli.hideIntro", false);
// How eager are we to show help: never=1, sometimes=2, always=3
pref("devtools.gcli.eagerHelper", 2);
// Alias to the script URLs for inject command.
pref("devtools.gcli.jquerySrc", "https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.1/jquery.min.js");
pref("devtools.gcli.lodashSrc", "https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.6.1/lodash.min.js");
pref("devtools.gcli.underscoreSrc", "https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js");
// Set imgur upload client ID
pref("devtools.gcli.imgurClientID", '0df414e888d7240');
// Imgur's upload URL
pref("devtools.gcli.imgurUploadURL", "https://api.imgur.com/3/image");
// GCLI commands directory
pref("devtools.commands.dir", "");
// Deprecation warnings after DevTools file migration.
pref("devtools.migration.warnings", true);
// view source
pref("view_source.syntax_highlight", true);
pref("view_source.wrap_long_lines", false);
pref("view_source.editor.external", false);
pref("view_source.editor.path", "");
// allows to add further arguments to the editor; use the %LINE% placeholder
// for jumping to a specific line (e.g. "/line:%LINE%" or "--goto %LINE%")
pref("view_source.editor.args", "");
// When true this will word-wrap plain text documents.
pref("plain_text.wrap_long_lines", false);
// whether or not to draw images while dragging
pref("nglayout.enable_drag_images", true);
// enable/disable paint flashing --- useful for debugging
// the first one applies to everything, the second one only to chrome
pref("nglayout.debug.paint_flashing", false);
pref("nglayout.debug.paint_flashing_chrome", false);
// enable/disable widget update area flashing --- only supported with
// BasicLayers (other layer managers always update the entire widget area)
pref("nglayout.debug.widget_update_flashing", false);
// Enable/disable display list invalidation logging --- useful for debugging.
pref("nglayout.debug.invalidation", false);
// Whether frame visibility tracking is enabled globally.
pref("layout.framevisibility.enabled", true);
pref("layout.framevisibility.numscrollportwidths", 0);
pref("layout.framevisibility.numscrollportheights", 1);
// scrollbar snapping region
// 0 - off
// 1 and higher - slider thickness multiple
pref("slider.snapMultiplier", 0);
// option to choose plug-in finder
pref("application.use_ns_plugin_finder", false);
// URI fixup prefs
pref("browser.fixup.alternate.enabled", true);
pref("browser.fixup.alternate.prefix", "www.");
pref("browser.fixup.alternate.suffix", ".com");
pref("browser.fixup.dns_first_for_single_words", false);
pref("browser.fixup.hide_user_pass", true);
// Location Bar AutoComplete
pref("browser.urlbar.autocomplete.enabled", true);
// Print header customization
// Use the following codes:
// &T - Title
// &U - Document URL
// &D - Date/Time
// &P - Page Number
// &PT - Page Number "of" Page total
// Set each header to a string containing zero or one of these codes
// and the code will be replaced in that string by the corresponding data
pref("print.print_headerleft", "&T");
pref("print.print_headercenter", "");
pref("print.print_headerright", "&U");
pref("print.print_footerleft", "&PT");
pref("print.print_footercenter", "");
pref("print.print_footerright", "&D");
pref("print.show_print_progress", true);
// xxxbsmedberg: more toolkit prefs
// When this is set to false each window has its own PrintSettings
// and a change in one window does not affect the others
pref("print.use_global_printsettings", true);
// Save the Printings after each print job
pref("print.save_print_settings", true);
// Cache old Presentation when going into Print Preview
pref("print.always_cache_old_pres", false);
// Enables you to specify the amount of the paper that is to be treated
// as unwriteable. The print_edge_XXX and print_margin_XXX preferences
// are treated as offsets that are added to this pref.
// Default is "-1", which means "use the system default". (If there is
// no system default, then the -1 is treated as if it were 0.)
// This is used by both Printing and Print Preview.
// Units are in 1/100ths of an inch.
pref("print.print_unwriteable_margin_top", -1);
pref("print.print_unwriteable_margin_left", -1);
pref("print.print_unwriteable_margin_right", -1);
pref("print.print_unwriteable_margin_bottom", -1);
// Enables you to specify the gap from the edge of the paper's
// unwriteable area to the margin.
// This is used by both Printing and Print Preview
// Units are in 1/100ths of an inch.
pref("print.print_edge_top", 0);
pref("print.print_edge_left", 0);
pref("print.print_edge_right", 0);
pref("print.print_edge_bottom", 0);
// Print via the parent process. This is only used when e10s is enabled.
#if defined(XP_WIN)
pref("print.print_via_parent", true);
#else
pref("print.print_via_parent", false);
#endif
// Pref used by the spellchecker extension to control the
// maximum number of misspelled words that will be underlined
// in a document.
pref("extensions.spellcheck.inline.max-misspellings", 500);
// Predefined convenience pref for overriding the dictionary
pref("spellchecker.dictionary.override", "");
// Prefs used by libeditor. Prefs specific to seamonkey composer
// belong in comm-central/editor/ui/composer.js
pref("editor.use_custom_colors", false);
pref("editor.singleLine.pasteNewlines", 2);
pref("editor.use_css", false);
pref("editor.css.default_length_unit", "px");
pref("editor.resizing.preserve_ratio", true);
pref("editor.positioning.offset", 0);
// Scripts & Windows prefs
pref("dom.disable_beforeunload", false);
pref("dom.disable_window_flip", false);
pref("dom.disable_window_move_resize", false);
pref("dom.disable_window_status_change", false);
pref("dom.disable_window_open_feature.titlebar", false);
pref("dom.disable_window_open_feature.close", false);
pref("dom.disable_window_open_feature.toolbar", false);
pref("dom.disable_window_open_feature.location", false);
pref("dom.disable_window_open_feature.personalbar", false);
pref("dom.disable_window_open_feature.menubar", false);
pref("dom.disable_window_open_feature.resizable", true);
pref("dom.disable_window_open_feature.minimizable", false);
pref("dom.disable_window_open_feature.status", true);
pref("dom.allow_scripts_to_close_windows", false);
pref("dom.require_user_interaction_for_beforeunload", true);
pref("dom.disable_open_during_load", false);
pref("dom.popup_maximum", 20);
pref("dom.popup_allowed_events", "change click dblclick mouseup pointerup notificationclick reset submit touchend");
pref("dom.disable_open_click_delay", 1000);
pref("dom.storage.enabled", true);
pref("dom.storage.default_quota", 5120);
pref("dom.send_after_paint_to_content", false);
// Whether the disabled attribute in HTMLLinkElement disables the sheet loading
// altogether, or forwards to the inner stylesheet method without attribute
// reflection.
//
// Historical behavior is the second, the first is being discussed at:
// https://github.com/whatwg/html/issues/3840
pref("dom.link.disabled_attribute.enabled", true);
// Timeout clamp in ms for timeouts we clamp
pref("dom.min_timeout_value", 4);
// And for background windows
pref("dom.min_background_timeout_value", 1000);
// Don't use new input types
pref("dom.experimental_forms", false);
// Enable :
pref("dom.forms.number", true);
// Enable by default. It will be turned off for remaining
// platforms which don't have a color picker implemented yet.
pref("dom.forms.color", true);
// Support for input type=date and type=time. By default, disabled.
pref("dom.forms.datetime", false);
// Support for input type=month, type=week and type=datetime-local. By default,
// disabled.
pref("dom.forms.datetime.others", false);
// Enable time picker UI. By default, disabled.
pref("dom.forms.datetime.timepicker", false);
// Support for new @autocomplete values
pref("dom.forms.autocomplete.experimental", false);
// Enables requestAutocomplete DOM API on forms.
pref("dom.forms.requestAutocomplete", false);
// Enable Directory API. By default, disabled.
pref("dom.input.dirpicker", false);
// Enables system messages and activities
pref("dom.sysmsg.enabled", false);
// Enable pre-installed applications.
pref("dom.webapps.useCurrentProfile", false);
pref("dom.cycle_collector.incremental", true);
// Parsing perf prefs. For now just mimic what the old code did.
#ifndef XP_WIN
pref("content.sink.pending_event_mode", 0);
#endif
// Disable popups from plugins by default
// 0 = openAllowed
// 1 = openControlled
// 2 = openAbused
pref("privacy.popups.disable_from_plugins", 2);
// Send "Sec-GPC" HTTP header, disabled by default
pref("privacy.GPCheader.enabled", false);
// Enforce tracking protection in all modes
pref("privacy.trackingprotection.enabled", false);
// Enforce tracking protection in Private Browsing mode
pref("privacy.trackingprotection.pbmode.enabled", false);
pref("dom.event.contextmenu.enabled", true);
pref("dom.event.clipboardevents.enabled", true);
pref("dom.webcomponents.enabled", false);
pref("javascript.enabled", true);
// Enable Array.prototype.values
pref("javascript.options.array_prototype_values", true);
pref("javascript.options.strict", false);
#ifdef DEBUG
pref("javascript.options.strict.debug", false);
#endif
pref("javascript.options.unboxed_objects", false);
pref("javascript.options.baselinejit", true);
pref("javascript.options.ion", true);
pref("javascript.options.ion.inlining", true);
pref("javascript.options.asmjs", true);
pref("javascript.options.wasm", true);
// wasm jit crashes in 32bit builds because of 64bit casts so
// only enable it by default for 64bit builds
#ifdef HAVE_64BIT_BUILD
pref("javascript.options.wasm_baselinejit", true);
#else
pref("javascript.options.wasm_baselinejit", false);
#endif
pref("javascript.options.native_regexp", true);
pref("javascript.options.parallel_parsing", true);
// ayncstack is used for debugging promises in devtools.
pref("javascript.options.asyncstack", false);
pref("javascript.options.throw_on_asmjs_validation_failure", false);
pref("javascript.options.ion.offthread_compilation", true);
// This preference instructs the JS engine to discard the
// source of any privileged JS after compilation. This saves
// memory, but makes things like Function.prototype.toSource()
// fail.
pref("javascript.options.discardSystemSource", false);
// This preference limits the memory usage of javascript.
// If you want to change these values for your device,
// please find Bug 417052 comment 17 and Bug 456721
// Comment 32 and Bug 613551.
pref("javascript.options.mem.high_water_mark", 128);
pref("javascript.options.mem.max", -1);
pref("javascript.options.mem.gc_per_zone", true);
pref("javascript.options.mem.gc_incremental", true);
pref("javascript.options.mem.gc_incremental_slice_ms", 20);
pref("javascript.options.mem.gc_generational", true);
pref("javascript.options.mem.gc_compacting", true);
pref("javascript.options.mem.log", false);
pref("javascript.options.mem.notify", false);
pref("javascript.options.gc_on_memory_pressure", true);
pref("javascript.options.compact_on_user_inactive", true);
pref("javascript.options.compact_on_user_inactive_delay", 300000); // ms
pref("javascript.options.mem.gc_high_frequency_time_limit_ms", 1000);
pref("javascript.options.mem.gc_high_frequency_low_limit_mb", 100);
pref("javascript.options.mem.gc_high_frequency_high_limit_mb", 500);
pref("javascript.options.mem.gc_high_frequency_heap_growth_max", 300);
pref("javascript.options.mem.gc_high_frequency_heap_growth_min", 150);
pref("javascript.options.mem.gc_low_frequency_heap_growth", 150);
pref("javascript.options.mem.gc_dynamic_heap_growth", true);
pref("javascript.options.mem.gc_dynamic_mark_slice", true);
pref("javascript.options.mem.gc_refresh_frame_slices_enabled", true);
pref("javascript.options.mem.gc_allocation_threshold_mb", 30);
pref("javascript.options.mem.gc_min_empty_chunk_count", 1);
pref("javascript.options.mem.gc_max_empty_chunk_count", 30);
pref("javascript.options.showInConsole", false);
pref("javascript.options.shared_memory", true);
pref("javascript.options.throw_on_debuggee_would_run", false);
pref("javascript.options.dump_stack_on_debuggee_would_run", false);
// advanced prefs
pref("advanced.mailftp", false);
pref("image.animation_mode", "normal");
// Same-origin policy for file URIs, "false" is traditional
pref("security.fileuri.strict_origin_policy", true);
// Treat all file URIs as having a unique origin.
// Only has an effect if strict origin policy is true.
pref("security.fileuri.unique_origin", true);
// If this pref is true, prefs in the logging.config branch will be cleared on
// startup. This is done so that setting a log-file and log-modules at runtime
// doesn't persist across restarts leading to huge logfile and low disk space.
pref("logging.config.clear_on_startup", true);
// If there is ever a security firedrill that requires
// us to block certian ports global, this is the pref
// to use. Is is a comma delimited list of port numbers
// for example:
// pref("network.security.ports.banned", "1,2,3,4,5");
// prevents necko connecting to ports 1-5 unless the protocol
// overrides.
// Allow necko to do A/B testing. Will generally only happen if
// telemetry is also enabled as otherwise there is no way to report
// the results
pref("network.allow-experiments", true);
// Allow the network changed event to get sent when a network topology or
// setup change is noticed while running.
pref("network.notify.changed", true);
// Allow network detection of IPv6 related changes (bug 1245059)
#if defined(XP_WIN)
pref("network.notify.IPv6", false);
#else
pref("network.notify.IPv6", true);
#endif
// Transmit UDP busy-work to the LAN when anticipating low latency
// network reads and on wifi to mitigate 802.11 Power Save Polling delays
pref("network.tickle-wifi.enabled", false);
pref("network.tickle-wifi.duration", 400);
pref("network.tickle-wifi.delay", 16);
// Turn off interprocess security checks. Needed to run xpcshell tests.
pref("network.disable.ipc.security", false);
// Default action for unlisted external protocol handlers
pref("network.protocol-handler.external-default", true); // OK to load
pref("network.protocol-handler.warn-external-default", true); // warn before load
// Prevent using external protocol handlers for these schemes
pref("network.protocol-handler.external.hcp", false);
pref("network.protocol-handler.external.vbscript", false);
pref("network.protocol-handler.external.javascript", false);
pref("network.protocol-handler.external.data", false);
pref("network.protocol-handler.external.ms-help", false);
pref("network.protocol-handler.external.mk", false);
pref("network.protocol-handler.external.res", false);
pref("network.protocol-handler.external.shell", false);
pref("network.protocol-handler.external.vnd.ms.radio", false);
pref("network.protocol-handler.external.disk", false);
pref("network.protocol-handler.external.disks", false);
pref("network.protocol-handler.external.afp", false);
pref("network.protocol-handler.external.moz-icon", false);
// Don't allow external protocol handlers for common typos
pref("network.protocol-handler.external.ttp", false); // http
pref("network.protocol-handler.external.ttps", false); // https
pref("network.protocol-handler.external.tps", false); // https
pref("network.protocol-handler.external.ps", false); // https
pref("network.protocol-handler.external.ile", false); // file
pref("network.protocol-handler.external.le", false); // file
// An exposed protocol handler is one that can be used in all contexts. A
// non-exposed protocol handler is one that can only be used internally by the
// application. For example, a non-exposed protocol would not be loaded by the
// application in response to a link click or a X-remote openURL command.
// Instead, it would be deferred to the system's external protocol handler.
// Only internal/built-in protocol handlers can be marked as exposed.
// This pref controls the default settings. Per protocol settings can be used
// to override this value.
pref("network.protocol-handler.expose-all", true);
// Warning for about:networking page
pref("network.warnOnAboutNetworking", true);
// Example: make IMAP an exposed protocol
// pref("network.protocol-handler.expose.imap", true);
// Whether IOService.connectivity and NS_IsOffline depends on connectivity status
pref("network.manage-offline-status", true);
// If set to true, IOService.offline depends on IOService.connectivity
pref("network.offline-mirrors-connectivity", false);
//
pref("network.http.version", "1.1"); // default
// pref("network.http.version", "1.0"); // uncomment this out in case of problems
// pref("network.http.version", "0.9"); // it'll work too if you're crazy
// keep-alive option is effectively obsolete. Nevertheless it'll work with
// some older 1.0 servers:
pref("network.http.proxy.version", "1.1"); // default
// pref("network.http.proxy.version", "1.0"); // uncomment this out in case of problems
// (required if using junkbuster proxy)
// this preference can be set to override the socket type used for normal
// HTTP traffic. an empty value indicates the normal TCP/IP socket type.
pref("network.http.default-socket-type", "");
// There is a problem with some IIS7 servers that don't close the connection
// properly after it times out (bug #491541). Default timeout on IIS7 is
// 120 seconds. We need to reuse or drop the connection within this time.
// We set the timeout a little shorter to keep a reserve for cases when
// the packet is lost or delayed on the route.
pref("network.http.keep-alive.timeout", 115);
// Timeout connections if an initial response is not received after 5 mins.
pref("network.http.response.timeout", 300);
// Limit the absolute number of http connections.
// Note: the socket transport service will clamp the number below this if the OS
// cannot allocate that many FDs
pref("network.http.max-connections", 256);
// If NOT connecting via a proxy, then
// a new connection will only be attempted if the number of active persistent
// connections to the server is less then max-persistent-connections-per-server.
pref("network.http.max-persistent-connections-per-server", 6);
// If connecting via a proxy, then a
// new connection will only be attempted if the number of active persistent
// connections to the proxy is less then max-persistent-connections-per-proxy.
pref("network.http.max-persistent-connections-per-proxy", 32);
// amount of time (in seconds) to suspend pending requests, before spawning a
// new connection, once the limit on the number of persistent connections per
// host has been reached. however, a new connection will not be created if
// max-connections or max-connections-per-server has also been reached.
pref("network.http.request.max-start-delay", 10);
// If a connection is reset, we will retry it max-attempts times.
pref("network.http.request.max-attempts", 10);
// Headers
pref("network.http.accept.default", "*/*");
pref("network.http.accept.navigation", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
pref("network.http.accept.image", "image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5");
pref("network.http.accept.style", "text/css,*/*;q=0.1");
// Prefs allowing granular control of referers
// 0=don't send any, 1=send only on clicks, 2=send on image requests as well
pref("network.http.sendRefererHeader", 2);
// false=real referer, true=spoof referer (use target URI as referer)
pref("network.http.referer.spoofSource", false);
// 0=full URI, 1=scheme+host+port+path, 2=scheme+host+port
pref("network.http.referer.trimmingPolicy", 0);
// 0=full URI, 1=scheme+host+port+path, 2=scheme+host+port
pref("network.http.referer.XOriginTrimmingPolicy", 0);
// 0=always send, 1=send iff base domains match, 2=send iff hosts match
pref("network.http.referer.XOriginPolicy", 0);
// Controls whether referrer attributes in , , ,