---
title: ghacks user.js
---


## `toolkit.coverage.endpoint.base`

Status: **locked**

Value: `""`


## `toolkit.coverage.opt-out`

Status: **locked**

Value: `true`


## `browser.discovery.enabled`

Status: **locked**

Value: `false`


## `browser.discovery.containers.enabled`

Status: **locked**

Value: `false`


## `browser.discovery.sites`

Status: **locked**

Value: `""`


## `browser.download.manager.addToRecentDocs`

Status: **locked**

Value: `false`


## `browser.download.hide_plugins_without_extensions`

Status: **locked**

Value: `false`


## `webchannel.allowObject.urlWhitelist`

Status: **locked**

Value: `""`


## `browser.cache.offline.insecure.enable`

Status: **locked**

Value: `false`


## `network.http.redirection-limit`

Status: **locked**

Value: `10`


## `offline-apps.allow_by_default`

Status: **locked**

Value: `false`


## `extensions.enabledScopes`

Status: **locked**

Value: `5`


## `extensions.autoDisableScopes`

Status: **locked**

Value: `11`


## `xpinstall.whitelist.required`

Status: **locked**

Value: `true`


## `dom.push.enabled`

Status: **locked**

Value: `false`


## `dom.push.connection.enabled`

Status: **locked**

Value: `false`


## `dom.push.serverURL`

Status: **locked**

Value: `""`


## `dom.push.userAgentID`

Status: **locked**

Value: `""`


## `targetBlankNoOpener.enabled`

Status: **locked**

Value: `true`


## `security.data_uri.block_toplevel_data_uri_navigations`

Status: **locked**

Value: `true`


## `ui.use_standins_for_native_colors`

Status: **locked**

Value: `true`


## `services.blocklist.onecrl.collection`

Status: **locked**

Value: `""`


## `services.blocklist.addons.collection`

Status: **locked**

Value: `""`


## `services.blocklist.plugins.collection`

Status: **locked**

Value: `""`


## `services.blocklist.gfx.collection`

Status: **locked**

Value: `""`


## `browser.startup.blankWindow`

Status: **locked**

Value: `false`


## `dom.event.highrestimestamp.enabled`

Status: **locked**

Value: `true`


## `privacy.trackingprotection.introURL`

Status: **locked**

Value: `""`


## `network.http.altsvc.enabled`

Status: **locked**

Value: `false`


## `network.http.altsvc.oe`

Status: **locked**

Value: `false`


## `network.file.disable_unc_paths`

Status: **locked**

Value: `true`


## `network.gio.supported-protocols`

Status: **locked**

Value: `""`


## `browser.urlbar.usepreloadedtopurls.enabled`

Status: **locked**

Value: `false`


## `browser.urlbar.speculativeConnect.enabled`

Status: **locked**

Value: `false`


## `browser.urlbar.oneOffSearches`

Status: **locked**

Value: `false`


## `network.auth.subresource-img-cross-origin-http-auth-allow`

Status: **locked**

Value: `false`


## `browser.shell.shortcutFavicons`

Status: **locked**

Value: `false`


## `alerts.showFavicons`

Status: **locked**

Value: `false`


## `security.ssl.require_safe_negotiation`

Status: **locked**

Value: `true`


## `security.tls.enable_0rtt_data`

Status: **locked**

Value: `false`


## `browser.xul.error_pages.expert_bad_cert`

Status: **locked**

Value: `true`


## `font.blacklist.underline_offset`

Status: **locked**

Value: `""`


## `gfx.font_rendering.graphite.enabled`

Status: **locked**

Value: `false`


## `network.http.referer.XOriginTrimmingPolicy`

Status: **locked**

Value: `0`


## `network.http.referer.spoofSource`

Status: **locked**

Value: `false`


## `plugin.default.state`

Status: **locked**

Value: `1`


## `plugin.defaultXpi.state`

Status: **locked**

Value: `1`


## `canvas.capturestream.enabled`

Status: **locked**

Value: `false`


## `dom.imagecapture.enabled`

Status: **locked**

Value: `false`


## `gfx.offscreencanvas.enabled`

Status: **locked**

Value: `false`


## `dom.disable_window_open_feature.close`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.location`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.menubar`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.minimizable`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.personalbar`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.resizable`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.status`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.titlebar`

Status: **locked**

Value: `true`


## `dom.disable_window_open_feature.toolbar`

Status: **locked**

Value: `true`


## `dom.disable_window_move_resize`

Status: **locked**

Value: `true`


## `dom.IntersectionObserver.enabled`

**Unused Setting**

Status: **locked**

Value: `false`

*Disabling this breaks the network panel.*



### References

[https://github.com/ghacksuserjs/ghacks-user.js/issues/737](https://github.com/ghacksuserjs/ghacks-user.js/issues/737)


## `accessibility.force_disabled`

Status: **locked**

Value: `1`


## `browser.uitour.enabled`

Status: **locked**

Value: `false`


## `browser.uitour.url`

Status: **locked**

Value: `""`


## `middlemouse.contentLoadURL`

Status: **locked**

Value: `false`


## `permissions.manager.defaultsUrl`

Status: **locked**

Value: `""`