All references are normative unless marked "Non-normative".

Augmented BNF for Syntax Specifications: ABNF, D. Crocker, P. Overell. IETF.
The 'about' URI scheme, S. Moonesamy. IETF.
(Non-normative) APNG Specification. S. Parmenter, V. Vukicevic, A. Smith. Mozilla.
Accessible Rich Internet Applications (WAI-ARIA), J. Craig, M. Cooper, L. Pappas, R. Schwerdtfeger, L. Seeman. W3C.
WAI-ARIA 1.0 User Agent Implementation Guide, A. Snow-Weaver, M. Cooper. W3C.
(Non-normative) Authoring Tool Accessibility Guidelines (ATAG) 2.0, J. Richards, J. Spellman, J. Treviranus. W3C.
(Non-normative) The Atom Syndication Format, M. Nottingham, R. Sayre. IETF.
Tags for Identifying Languages; Matching of Language Tags, A. Phillips, M. Davis. IETF.
Behavioral Extensions to CSS, I. Hickson. W3C.
UAX #9: Unicode Bidirectional Algorithm, M. Davis. Unicode Consortium.
(Non-normative) UTN #6: BOCU-1: MIME-Compatible Unicode Compression, M. Scherer, M. Davis. Unicode Consortium.
(Non-normative) HTML Canvas 2D Context, R. Cabanier, E. Graff, J. Munro, T. Wiltzius. W3C.
(Non-normative) UTR #26: Compatibility Encoding Scheme For UTF-16: 8-BIT (CESU-8), T. Phipps. Unicode Consortium.
(Non-normative) Character Model for the World Wide Web 1.0: Fundamentals, M. Dürst, F. Yergeau, R. Ishida, M. Wolf, T. Texin. W3C.
Unicode Common Locale Data Repository. Unicode.
(Non-normative) On computable numbers, with an application to the Entscheidungsproblem, A. Turing. In Proceedings of the London Mathematical Society, series 2, volume 42, pages 230-265. London Mathematical Society, 1937.
HTTP State Management Mechanism, A. Barth. IETF.
Cross-Origin Resource Sharing, A. van Kesteren. WHATWG.
(Non-normative) CP50220, Y. Naruse. IANA.
(Non-normative) Content Security Policy, B. Sterne, A. Barth. W3C.
Cascading Style Sheets Level 2 Revision 1, B. Bos, T. Çelik, I. Hickson, H. Lie. W3C.
(Non-normative) CSS Animations, D. Jackson, D. Hyatt, C. Marrin, S. Galineau, L. Baron. W3C.
CSS Styling Attribute Syntax, T. Çelik, E. Etemad. W3C.
CSS Color Module Level 3, T. Çelik, C. Lilley, L. Baron. W3C.
CSS Font Load Events, J. Daggett. W3C.
CSS Fonts, J. Daggett. W3C.
CSS Generated Content, H. Lie, E. Etemad, I. Hickson. W3C.
CSS Image Values and Replaced Content Module, E. Etemad, T. Atkins. W3C.
Cascading Style Sheets Object Model (CSSOM), S. Pieters, G. Adams. W3C.
CSSOM View Module, S. Pieters, G. Adams. W3C.
CSS Ruby Module Level 1, E. Etemad, K. Ishii, R. Ishida. W3C.
(Non-normative) CSS Transitions, D. Jackson, D. Hyatt, C. Marrin, L. Baron. W3C.
CSS3 Basic User Interface Module, T. Çelik. W3C.
CSS Cascading and Inheritance Level 3, H. Lie, E. Etemad, T. Atkins. W3C
CSS Syntax, T. Atkins, S. Sapin. W3C.
CSS3 Values and Units, H. Lie, T. Atkins, E. Etemad. W3C.
CSS Writing Modes, E. Etemad, K. Ishii. W3C.
Custom Elements, D. Glazkov. W3C.
Dynamic adaptive streaming over HTTP (DASH). ISO.
DOM, A. van Kesteren, A. Gregor, Ms2ger. WHATWG.
Document Object Model (DOM) Level 3 Events Specification, T. Leithead, J. Rossi, D. Schepers, B. Höhrmann, P. Le Hégaret, T. Pixley. W3C.
DOM Parsing and Serialization, T. Leithead. Work in Progress. W3C.
(Non-normative) The DOT Language. Graphviz.
ECMAScript Language Specification. ECMA.
HTML Editing APIs, A. Gregor. W3C Editing APIs CG.
Encoding, A. van Kesteren, J. Bell. WHATWG.
Server-Sent Events, I. Hickson. W3C.
File API, A. Ranganathan. W3C.
Fullscreen, A. van Kesteren, T. Çelik. W3C.
(Non-normative) Graphics Interchange Format. CompuServe.
(Non-normative) Computer Graphics: Principles and Practice in C, Second Edition, J. Foley, A. van Dam, S. Feiner, J. Hughes. Addison-Wesley. ISBN 0-201-84840-6.
(Non-normative) Inter Gravissimas, A. Lilius, C. Clavius. Gregory XIII Papal Bull, February 1582.
HTML to Platform Accessibility APIs Implementation Guide. W3C.
(Non-normative) HTML5 differences from HTML4, S. Pieters. W3C.
Hypertext Transfer Protocol — HTTP/1.1, R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, T. Berners-Lee. IETF.
(Non-normative) HTTP Over TLS, E. Rescorla. IETF.
Permanent Message Header Field Names. IANA.
ISO 3166: Codes for the representation of names of countries and their subdivisions. ISO.
(Non-normative) ISO8601: Data elements and interchange formats — Information interchange — Representation of dates and times. ISO.
Requirements for Japanese Text Layout. W3C.
JPEG File Interchange Format, E. Hamilton.
(Non-normative) The 'mailto' URI scheme, M. Duerst, L. Masinter, J. Zawinski. IETF.
Mathematical Markup Language (MathML), D. Carlisle, P. Ion, R. Miner, N. Poppelier. W3C.
Media Fragments URI 1.0, R. Troncy, E. Mannens, S. Pfeiffer, D. Van Deursen. W3C CR.
Microformats Wiki: existing rel values. Microformats.
MIME Sniffing, G. Hemsley. WHATWG.
MNG (Multiple-image Network Graphics) Format. G. Randers-Pehrson.
ISO/IEC 13818-1: Information technology — Generic coding of moving pictures and associated audio information: Systems. ISO/IEC.
ISO/IEC 14496-12: ISO base media file format. ISO/IEC.
Media Queries, H. Lie, T. Çelik, D. Glazman, A. van Kesteren. W3C.
(Non-normative) Gecko Plugin API Reference. Mozilla.
SkeletonHeaders. Xiph.Org.
Autodiscovery in HTML/XHTML. In OpenSearch 1.1 Draft 4, Section 4.6.2.
The Web Origin Concept, A. Barth. IETF.
(Non-normative) Page Visibility, J. Mann, A. Jain. W3C.
(Non-normative) Document management — Portable document format — Part 1: PDF. ISO.
Portable Network Graphics (PNG) Specification, D. Duce. W3C.
Pointer Lock, V. Scheib. W3C.
(Non-normative) Polyglot Markup: HTML-Compatible XHTML Documents, E. Graff. W3C.
(Non-normative) The Properties and Promises of UTF-8, M. Dürst. University of Zürich. In Proceedings of the 11th International Unicode Conference.
Public Suffix List. Mozilla Foundation.
Domain Names - Concepts and Facilities, P. Mockapetris. IETF, November 1987.
Requirements for Internet Hosts -- Application and Support, R. Braden. IETF, October 1989.
(Non-normative) Character Mnemonics and Character Sets, K. Simonsen. IETF.
(Non-normative) Japanese Character Encoding for Internet Messages, J. Murai, M. Crispin, E. van der Poel. IETF.
(Non-normative) ISO-2022-JP-2: Multilingual Extension of ISO-2022-JP, M. Ohta, K. Handa. IETF.
(Non-normative) Korean Character Encoding for Internet Messages, U. Choi, K. Chon, H. Park. IETF.
(Non-normative) ASCII Printable Characters-Based Chinese Character Encoding for Internet Messages, Y. Wei, Y. Zhang, J. Li, J. Ding, Y. Jiang. IETF.
(Non-normative) Chinese Character Encoding for Internet Messages, HF. Zhu, DY. Hu, ZG. Wang, TC. Kao, WCH. Chang, M. Crispin. IETF.
Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types, N. Freed, N. Borenstein. IETF.
Key words for use in RFCs to Indicate Requirement Levels, S. Bradner. IETF.
(Non-normative) Japanese Character Encoding for Internet Messages, K. Tamaru. IETF.
PKCS #1: RSA Encryption, B. Kaliski. IETF.
The text/css Media Type, H. Lie, B. Bos, C. Lilley. IETF.
Returning Values from Forms: multipart/form-data, L. Masinter. IETF.
The "data" URL scheme, L. Masinter. IETF.
URI Resolution Services Necessary for URN Resolution, M. Mealling, R. Daniel. IETF.
The Text/Plain Format and DelSp Parameters, R. Gellens. IETF.
XML Media Types, M. Murata, S. St. Laurent, D. Kohn. IETF.
Algorithms and Identifiers for the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile, W. Polk, R. Housley, L. Bassham. IETF.
Internationalizing Domain Names in Applications (IDNA), P. Faltstrom, P. Hoffman, A. Costello. IETF.
The Codecs Parameter for "Bucket" Media Types, R. Gellens, D. Singer, P. Frojdh. IETF.
(Non-normative) Scripting Media Types, B. Höhrmann. IETF.
Guidelines and Registration Procedures for New URI Schemes, T. Hansen, T. Hardie, L. Masinter. IETF.
The Base16, Base32, and Base64 Data Encodings, S. Josefsson. IETF.
Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile, D. Cooper, S. Santesson, S. Farrell, S. Boeyen, R. Housley, W. Polk. IETF.
Internet Message Format, P. Resnick. IETF.
URI Scheme for Global System for Mobile Communications (GSM) Short Message Service (SMS), E. Wilde, A. Vaha-Sipila. IETF.
Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP), J. Reschke. IETF.
vCard Format Specification, S. Perreault. IETF.
(Non-normative) Use Cases & Exploratory Approaches for Ruby Markup, R. Ishida. W3C.
(Non-normative) UTR #6: A Standard Compression Scheme For Unicode, M. Wolf, K. Whistler, C. Wicksteed, M. Davis, A. Freytag, M. Scherer. Unicode Consortium.
Selectors, E. Etemad, T. Çelik, D. Glazman, I. Hickson, P. Linss, J. Williams. W3C.
IEC 61966-2-1: Multimedia systems and equipment — Colour measurement and management — Part 2-1: Colour management — Default RGB colour space — sRGB. IEC.
Scalable Vector Graphics (SVG) Tiny 1.2 Specification, O. Andersson, R. Berjon, E. Dahlström, A. Emmons, J. Ferraiolo, A. Grasso, V. Hardy, S. Hayman, D. Jackson, C. Lilley, C. McCormack, A. Neumann, C. Northway, A. Quint, N. Ramani, D. Schepers, A. Shellshear. W3C.
(Non-normative) Tor.
(Non-normative) Working with Time Zones, A. Phillips, N. Lindenberg, M. Davis, M.J. Dürst, F. Sasaki, R. Ishida. W3C.
Typed Array Specification, D. Herman, K. Russell. Khronos.
(Non-normative) Time Zone Database. IANA.
(Non-normative) User Agent Accessibility Guidelines (UAAG) 2.0, J. Allan, K. Ford, J. Richards, J. Spellman. W3C.
UTR #10: Unicode Collation Algorithm, M. Davis, K. Whistler. Unicode Consortium.
UndoManager and DOM Transaction, R. Niwa.
The Unicode Standard. Unicode Consortium.
(Non-normative) A composite approach to language/encoding detection, S. Li, K. Momoi. Netscape. In Proceedings of the 19th International Unicode Conference.
URL, A. van Kesteren. WHATWG.
(Non-normative) UTF-7: A Mail-Safe Transformation Format of Unicode, D. Goldsmith, M. Davis. IETF.
(Non-normative) Multilingual form encoding, M. Dürst. W3C.
(Non-normative) UTR #36: Unicode Security Considerations, M. Davis, M. Suignard. Unicode Consortium.
(Non-normative) Web Content Accessibility Guidelines (WCAG) 2.0, B. Caldwell, M. Cooper, L. Reid, G. Vanderheiden. W3C.
WebGL Specification, D. Jackson. Khronos Group.
Web IDL, C. McCormack. W3C.
Web Linking, M. Nottingham. IETF.
Web Messaging, I. Hickson. W3C.
WebM Container Guidelines. The WebM Project.
Web Storage, I. Hickson. W3C.
WebVTT, I. Hickson. W3C.
Web Workers, I. Hickson. W3C.
The WebSocket protocol, I. Fette, A. Melnikov. IETF.
Recommendation X.690 — Information Technology — ASN.1 Encoding Rules — Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER), and Distinguished Encoding Rules (DER). International Telecommunication Union.
XMLHttpRequest, A. van Kesteren. WHATWG.
Extensible Markup Language, T. Bray, J. Paoli, C. Sperberg-McQueen, E. Maler, F. Yergeau. W3C.
XML Base, J. Marsh, R. Tobin. W3C.
Namespaces in XML, T. Bray, D. Hollander, A. Layman, R. Tobin. W3C.
XML Path Language (XPath) Version 1.0, J. Clark, S. DeRose. W3C.
(Non-normative) XSL Transformations (XSLT) Version 1.0, J. Clark. W3C.