user-overrides.js for use with https://github.com/ghacksuserjs/ghacks-user.js

user-overrides.js

/*** MY OVERRIDES ***/
user_pref("_user.js.parrot", "overrides section syntax error");


/* [UX,-HIST] Restore previous session after Firefox restart. */
user_pref("browser.startup.page", 3);                                   // 0102

/* [UX,-GEO] Allow websites to detect my locale. */
user_pref("intl.accept_languages", "ru,en-us,en");                      // 0210
user_pref("javascript.use_us_english_locale", false);                   // 0211

/* [DEV,PERF,-FP] Wanna play with HTTP/2. */
user_pref("network.http.altsvc.enabled", true);                         // 0703
user_pref("network.http.altsvc.oe", true);                              // 0703

/* [DEV] Avoid /etc/hosts & local DNS breakage when using SOCKS proxy. */
user_pref("network.proxy.socks_remote_dns", false);                     // 0704

/* [UX] Wanna search DuckDuckGo from location bar. */
user_pref("keyword.enabled", true);                                     // 0801

/* [UX,-HIST] Enable search and form history. */
user_pref("browser.formfill.enable", true);                             // 0860

/* [SECURITY] Disable saving passwords. */
user_pref("signon.rememberSignons", false);                             // 0901

/* [PERF,-FP] Use cache.
 * Use ETag Stoppa extension to block at least ETag. */
user_pref("browser.cache.disk.enable", true);                           // 1001

/* [UX,-HIST] Remember more closed tabs for undo. */
user_pref("browser.sessionstore.max_tabs_undo", 25);                    // 1020

/* [UX,-HIST] Restore all state for closed tab or previous session after Firefox restart. */
user_pref("browser.sessionstore.privacy_level", 0);                     // 1021
user_pref("browser.sessionstore.interval", 15000);                      // 1023

/* [UX] Enable favicons in web notifications. */
user_pref("alerts.showFavicons", true);                                 // 1032

/* [PERF,-FP] Use SSL sessions. */
user_pref("security.ssl.disable_session_identifiers", false);           // 1204

/* [UX,-SECURITY] Ignore OCSP fetch failures. */
user_pref("security.OCSP.require", false);                              // 1212

/* [UX] Enable insecure passive content (such as images) on https pages.
 * Use uMatrix to disable it globally and then enable on per-site basis. */
user_pref("security.mixed_content.block_display_content", false);       // 1241

/* [UX] Speedup detection of HTTP-only websites. */
user_pref("dom.security.https_only_mode_send_http_background_request", true); // 1246

/* [SECURITY,-FP] Disable weak ciphers. */
user_pref("security.ssl3.rsa_des_ede3_sha", false);                     // 1261
user_pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false);              // 1264
user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false);              // 1264
user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false);                // 1264
user_pref("security.ssl3.ecdhe_rsa_aes_256_sha", false);                // 1264
user_pref("security.ssl3.rsa_aes_128_sha", false);                      // 1264
user_pref("security.ssl3.rsa_aes_256_sha", false);                      // 1264

/* [-TRACKING] Always send CROSS ORIGIN referer.
 * Required for Atlassian JIRA cloud. */
user_pref("network.http.referer.XOriginPolicy", 0);                     // 1603

/* [UX,-FP] Enable WebRTC. */
user_pref("media.peerconnection.enabled", true);                        // 2001

/* [UX,-SECURITY,-FP] Enable WebGL.
 * Required for street view feature on Yandex maps.
 * Enable MANUALLY when needed! */
// user_pref("webgl.disabled", false);                                     // 2010
user_pref("webgl.min_capability_mode", false);                          // 2012

/* [UX] Enable auto-play of HTML5 media. */
//user_pref("media.autoplay.default", 0);                                 // 2030

/* [UX,-SECURITY] Allow workers.
 * NOTE: Set here your current about:config value for dom.push.userAgentID!
 * May use uMatrix to disable globally & enable per-site (against miners/Meltdown/Spectre). */
user_pref("dom.serviceWorkers.enabled", true);                          // 2302
user_pref("dom.push.enabled", true);                                    // 2305

/* [±UX] Enable website access to clipboard events/content.
 * Slack needs dom.allow_cut_copy for copying link to message.
 * May need this to avoid website breakage (like on paste rich text or custom copy). */
user_pref("dom.allow_cut_copy", true);                                  // 2404

/* [UX,PERF,-SECURITY] Enable asm.js and WebAssembly.
 * May need this to avoid website breakage and/or improve performance.
 * - Taxer.ua require wasm to handle "electronic digital signature". */
// user_pref("javascript.options.asmjs", true);                            // 2420
user_pref("javascript.options.wasm", true);                             // 2422

/* [UX,-FP] Block only third-party trackers.
 * Allow to store third-party secure cookies.
 * Use uMatrix to accept/block cookies. */
user_pref("network.cookie.cookieBehavior", 4);                          // 2701
user_pref("network.cookie.thirdparty.sessionOnly", false);              // 2702

/* [UX,-HIST] Disable Firefox to clear items on shutdown. */
user_pref("privacy.sanitize.sanitizeOnShutdown", false);                // 2802

/* [UX,-SECURITY] Disable First Party Isolation.
 * Required for Atlassian JIRA cloud.
 * May need one of these (try 4002 first) to avoid website breakage. */
user_pref("privacy.firstparty.isolate", false);                         // 4001
// user_pref("privacy.firstparty.isolate.restrict_opener_access", false);  // 4002

/* [UX,-FP] Disable resist fingerprinting.
 * Required for compatibility with Gesturefy-2.x extension.
 * AMO thinks I'm using FF 60.0 (ESR) and don't allow to install newer extensions.
 * May need this to avoid website breakage. */
user_pref("privacy.resistFingerprinting", false);                       // 4501

/* [UX,-FP] Enable mozAddonManager Web API.
 * Required to let AMO see installed extensions and let you add a review. */
user_pref("privacy.resistFingerprinting.block_mozAddonManager", false); // 4503

/* [UX,-FP] Disable RFP letterboxing. */
user_pref("privacy.resistFingerprinting.letterboxing", false);          // 4504

/* [FP] Enable some alternatives to resist fingerprinting.
 * Require dom performance for LinkedIn.
 * Require site-specific zoom for UX.
 * Require pointer events for Gesturefy extension.
 * Wanna use all available fonts. */
user_pref("dom.enable_resource_timing", false);                         // 4602
// user_pref("dom.enable_performance", false);                             // 4603
// user_pref("browser.zoom.siteSpecific", false);                          // 4605
user_pref("dom.netinfo.enabled", false);                                // 4607
user_pref("media.webspeech.synth.enabled", false);                      // 4608
user_pref("media.video_stats.enabled", false);                          // 4610
user_pref("media.ondevicechange.enabled", false);                       // 4612
user_pref("webgl.enable-debug-renderer-info", false);                   // 4613
user_pref("ui.prefersReducedMotion", 0);                                // 4614
// user_pref("dom.w3c_pointer_events.enabled", false);                     // 4615
user_pref("ui.use_standins_for_native_colors", true);                   // 4616
// user_pref("layout.css.font-visibility.level", 1);                       // 4618


/*** CUSTOM CHANGES not related to using/fixing ghacks user.js ***/
user_pref("_user.js.parrot", "custom section syntax error");


/* [UX] Keep about 15 tabs visible at once (favicon plus 3-4 characters of title). */
user_pref("browser.tabs.tabMinWidth", 85);
/* [UX] Zoom devtools to 140%. */
user_pref("devtools.toolbox.zoomValue", "1.4");
/* [UX] Both multi-line & single-line spell check. */
user_pref("layout.spellcheckDefault", 2); // 0=none, 1-multi-line, 2=multi-line & single-line
/* [UX] Disable backspace navigate to previous page. */
user_pref("browser.backspace_action", 2); // 0=previous page, 1=scroll up, 2=do nothing
/* [UX] Copy non-ASCII URI from location bar. */
user_pref("browser.urlbar.decodeURLsOnCopy", true);
/* [UX] Disable Alt key toggling the menu bar. */
user_pref("ui.key.menuAccessKey", 0); // 18=Alt
/* Disable CFR (Contextual Feature Recommender). */
user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr", false);
/* Disable and hide Firefox Accounts and Sync. */
user_pref("identity.fxaccounts.enabled", false);
/* [UX] Disable site specific zoom (required for plugin Zoom Page WE). */
user_pref("browser.zoom.siteSpecific", false);


user_pref("_user.js.parrot", "SUCCESS");

Before using this user-overrides.js I recommend you to find current value of dom.push.userAgentID at about:config and copy it into this file.