API Notes

jawz101- Feel free to fill in the blanks, rearrange, etc. I didn't know how to break up some of the stuff in the GENERAL section but I was going for general site layout-type stuff under general but much of the general section is probably deserves better categorization (console API, WEBRTC, Crypto, etc.)

Personally, I don't use the per-site policies- too much work and I have a few extensions to manage unbreaking things :/ These are just notes I reference to apply a default block versus the predefined policies - @jawz101

Note from developer: This add-on's advantage over simply disabling features via about:config prefs is that the web site gets a more graceful response versus completely disabling a web feature that is typically expected in a modern web browser.

GENERAL	BREAKAGE	about:config pref
Console API	Firefox web console on Facebook
CSS Conditional Rules Module Level 3
CSS Font Loading Module Level 3		layout.css.font-loading-api.enabled
CSS Object Model (CSSOM)
CSSOM View Module
Directory Upload
DOM	Internet becomes unusable
DOM Level 1	Internet becomes unusable
DOM Level 2: Core	Internet becomes unusable
DOM Level 2: Events	Internet becomes unusable
DOM Level 2: HTML	Hulu.com
DOM Level 2: Style	xda-developers
DOM Level 2: Traversal and Range	netxinvestor.com
DOM Level 3: Core
DOM Level 3: XPath
DOM Parsing and Serialization	media playback/subtitles
execCommand
Fetch	Hulu.com
File API	YouTube	dom.fileHandle.enabled
HTML	Internet becomes unusable
HTML 5	Internet becomes unusable
HTML 5.1
HTML: Canvas Element	maps.google.com
HTML: Channel Messaging	facebook notifications button
HTML: History Interface
HTML: Plugins
Non-Standard	encountered on a vendor site at work
Pointer Lock		dom.w3c_pointer_events.enabled?
Scalable Vector Graphics (SVG) 1.1 (Second Edition)	iplists.firehol.org	svg.disabled
Selection API	creating a reddit comment	dom.select_events.enabled
Selectors API Level 1
Shadow DOM		dom.webcomponents.shadowdom.enabled
Tracking Preference Expression (DNT)	DuckDuckGo honors DNT	privacy.donottrackheader.enabled
URL
W3C DOM4
Web Cryptography API
WebRTC 1.0: Real-time Communication Between Browser		media.peerconnection.enabled
XMLHttpRequest	Internet becomes unusable

PERSISTENCE/ACTIVE CONNECTIONS	BREAKAGE	about:config pref
Beacon	low risk	beacon.enabled
HTML: Broadcasting
HTML: Web Sockets
HTML: Web Storage	Facebook	dom.storage.enabled
HTML: Web Workers	history.com videos	dom.workers.enabled
Indexed Database API		dom.indexedDB.enabled
Push API	Gmail, Google Docs	dom.push.enabled
Service Workers	if you want FB/gmail notifications	dom.serviceWorkers.enabled
Web Notifications		dom.webnotifications.enabled

AUDIO/VISUAL/DRM	BREAKAGE	about:config pref
Encoding
Encrypted Media Extensions		media.eme.enabled
Fullscreen API	YouTube	full-screen-api.enabled
Media Capture and Streams
Media Capture from DOM Elements
Media Source Extensions	YouTube	media.mediasource.enabled
MediaStream Recording
Web Audio API		dom.webaudio.enabled
WebGL Specification		webgl.disabled
WebVTT: The Web Video Text Tracks Format		media.webvtt.enabled (old pref)

PHYSICAL ENVIRONMENT	BREAKAGE	about:config pref
Ambient Light Sensor API	low risk	device.sensors.ambientLight.enabled
Battery Status API	low risk	dom.battery.enabled
DeviceOrientation Event Specification	low risk	device.sensors.motion.enabled?
Gamepad	low risk	dom.gamepad.enabled
Geolocation API	low risk	geo.enabled
Geometry Interfaces Module Level 1	low risk
Proximity Events	low risk	device.sensors.proximity.enabled
Screen Orientation API	low risk	device.sensors.orientation.enabled?
Vibration API	low risk	dom.vibrator.enabled

BROWSER ENVIRONMENT	BREAKAGE	about:config pref
High Resolution Time Level 2		dom.event.highrestimestamp.enabled
Navigation Timing		dom.enable_performance_navigation_timing
Page Visibility (Second Edition)
Performance Timeline
Performance Timeline Level 2
Resource Timing		dom.enable_resource_timing
Timing / Performance Detection
Timing Control for Script-Based Animations	YouTube controls
UI Events Specification
User Timing Level 2