url.spec.whatwg.org

• charset: utf-8
• content: width=device-width, initial-scale=1, shrink-to-fit=no name: viewport
• content: #3c790a name: theme-color
• content: light dark name: color-scheme
• content: Bikeshed version 0ef803fdf, updated Tue Jan 6 11:59:39 2026 -0800 name: generator
• content: dc66b3bba025b76ecba0f5f2a323a600c0c74a84 name: revision

• Snapshot as of this commit
• http://url.spec.whatwg.org/#goals
• http://url.spec.whatwg.org/#infrastructure
• http://url.spec.whatwg.org/#writing
• http://url.spec.whatwg.org/#parsers
• http://url.spec.whatwg.org/#percent-encoded-bytes
• http://url.spec.whatwg.org/#security-considerations
• http://url.spec.whatwg.org/#hosts-(domains-and-ip-addresses)
• http://url.spec.whatwg.org/#host-representation
• http://url.spec.whatwg.org/#host-miscellaneous
• http://url.spec.whatwg.org/#idna
• http://url.spec.whatwg.org/#host-writing
• http://url.spec.whatwg.org/#host-parsing
• http://url.spec.whatwg.org/#host-serializing
• http://url.spec.whatwg.org/#host-equivalence
• http://url.spec.whatwg.org/#urls
• http://url.spec.whatwg.org/#url-representation
• http://url.spec.whatwg.org/#url-miscellaneous
• http://url.spec.whatwg.org/#url-writing
• http://url.spec.whatwg.org/#url-parsing
• http://url.spec.whatwg.org/#url-serializing
• http://url.spec.whatwg.org/#url-equivalence
• http://url.spec.whatwg.org/#origin
• http://url.spec.whatwg.org/#url-rendering
• http://url.spec.whatwg.org/#url-rendering-simplification
• http://url.spec.whatwg.org/#url-rendering-elision
• http://url.spec.whatwg.org/#url-rendering-i18n
• http://url.spec.whatwg.org/#application/x-www-form-urlencoded
• http://url.spec.whatwg.org/#urlencoded-parsing
• http://url.spec.whatwg.org/#urlencoded-serializing
• http://url.spec.whatwg.org/#urlencoded-hooks
• http://url.spec.whatwg.org/#api
• http://url.spec.whatwg.org/#url-class
• http://url.spec.whatwg.org/#interface-urlsearchparams
• http://url.spec.whatwg.org/#url-apis-elsewhere
• http://url.spec.whatwg.org/#acknowledgments
• http://url.spec.whatwg.org/#ipr
• http://url.spec.whatwg.org/#index
• http://url.spec.whatwg.org/#index-defined-here
• http://url.spec.whatwg.org/#index-defined-elsewhere
• http://url.spec.whatwg.org/#references
• http://url.spec.whatwg.org/#normative
• http://url.spec.whatwg.org/#informative
• http://url.spec.whatwg.org/#idl-index
• [RFC3986]
• [RFC3987]
• [RFC6454]
• http://url.spec.whatwg.org/#url
• [INFRA]
• [ENCODING]
• [FILEAPI]
• [HTML]
• [UTS46]
• [WEBIDL]
• validation error
• definition of
• forbidden domain code point
• http://url.spec.whatwg.org/#example-domain-invalid-code-point
• dfn for string
• is special
• domain-to-ASCII
• opaque host
• is not special
• forbidden host code point
• http://url.spec.whatwg.org/#example-host-invalid-code-point
• IPv4 address
• http://url.spec.whatwg.org/#example-ipv4-empty-part
• http://url.spec.whatwg.org/#example-ipv4-too-many-parts
• http://url.spec.whatwg.org/#example-ipv4-non-numeric-part
• http://url.spec.whatwg.org/#example-ipv4-non-decimal-part
• http://url.spec.whatwg.org/#example-ipv4-out-of-range-part
• IPv6 address
• http://url.spec.whatwg.org/#example-ipv6-unclosed
• http://url.spec.whatwg.org/#example-ipv6-invalid-compression
• http://url.spec.whatwg.org/#example-ipv6-too-many-pieces
• http://url.spec.whatwg.org/#example-ipv6-multiple-compression
• http://url.spec.whatwg.org/#example-ipv6-invalid-code-point
• http://url.spec.whatwg.org/#example-ipv6-too-few-pieces
• http://url.spec.whatwg.org/#example-ipv4-in-ipv6-too-many-pieces
• http://url.spec.whatwg.org/#example-ipv4-in-ipv6-invalid-code-point
• http://url.spec.whatwg.org/#example-ipv4-in-ipv6-out-of-range-part
• http://url.spec.whatwg.org/#example-ipv4-in-ipv6-too-few-parts
• URL units
• http://url.spec.whatwg.org/#example-invalid-url-unit
• http://url.spec.whatwg.org/#example-special-scheme-missing-following-solidus
• scheme
• base URL
• opaque path
• http://url.spec.whatwg.org/#example-missing-scheme-non-relative-url
• special scheme
• http://url.spec.whatwg.org/#example-invalid-reverse-solidus
• includes credentials
• http://url.spec.whatwg.org/#example-invalid-credentials
• http://url.spec.whatwg.org/#example-host-missing
• http://url.spec.whatwg.org/#example-port-out-of-range
• http://url.spec.whatwg.org/#example-port-invalid
• relative-URL string
• start with a Windows drive letter
• http://url.spec.whatwg.org/#example-file-invalid-windows-drive-letter
• http://url.spec.whatwg.org/#example-file-invalid-windows-drive-letter-host
• EOF code point
• pointer
• c
• remaining
• http://url.spec.whatwg.org/#example-12672b6a
• http://url.spec.whatwg.org/#example-empty-string
• percent-encoded byte
• host parsing
• dfn for byte sequence
• percent-encode set
• C0 control percent-encode set
• query percent-encode set
• fragment percent-encode set
• path percent-encode set
• userinfo percent-encode set
• URL record
• path
• query
• fragment
• dfn for string
• [ECMA-262]
• component percent-encode set
• application/x-www-form-urlencoded percent-encode set
• special-query percent-encode set
• percent-encode
• URL parser
• dfn for code point
• percent-encode after encoding
• http://url.spec.whatwg.org/#example-percent-encode-operations
• [UTR36]
• valid host string
• host serializer
• dfn for host
• http://url.spec.whatwg.org/#example-host-parsing
• domain
• IP address
• empty host
• http://url.spec.whatwg.org/#example-opaque-host-url
• dfn for url
• [RFC1034]
• [RFC791]
• [RFC4291]
• [PSL]
• public suffix
• domain label
• http://url.spec.whatwg.org/#example-host-psl
• registrable domain
• domain-invalid-code-point
• [RFC5890]
• domain-to-Unicode
• valid domain string
• valid IPv4-address string
• valid IPv6-address string
• domain to ASCII
• valid domain
• IPv6-unclosed
• IPv6 parser
• opaque-host parser
• ends in a number checker
• IPv4 parser
• IPv4 number parser
• IPv4-empty-part
• IPv4-too-many-parts
• IPv4-non-numeric-part
• IPv4-non-decimal-part
• IPv4-out-of-range-part
• pieces
• IPv6-invalid-compression
• IPv6-too-many-pieces
• IPv6-multiple-compression
• IPv4-in-IPv6-invalid-code-point
• IPv4-in-IPv6-too-many-pieces
• IPv4-in-IPv6-out-of-range-part
• IPv4-in-IPv6-too-few-parts
• IPv6-invalid-code-point
• IPv6-too-few-pieces
• host-invalid-code-point
• URL code point
• invalid-URL-unit
• IPv4 serializer
• IPv6 serializer
• serialize an integer
• find the IPv6 address compressed piece index
• [RFC5952]
• http://url.spec.whatwg.org/#example-e2b3492e
• valid URL string
• URL serializer
• dfn for url
• http://url.spec.whatwg.org/#example-url-parsing
• URL path
• http://url.spec.whatwg.org/#example-url-components
• dfn for url
• dfn for url
• blob URL entry
• dfn for url
• URL path segment
• default port
• Windows drive letter
• normalized Windows drive letter
• http://url.spec.whatwg.org/#example-start-with-a-widows-drive-letter
• relative-URL-with-fragment string
• absolute-URL-with-fragment string
• absolute-URL string
• URL-fragment string
• URL-scheme string
• scheme-relative-special-URL string
• scheme-relative-file-URL string
• URL-query string
• [IANA-URI-SCHEMES]
• [RFC7595]
• path-absolute-URL string
• path-relative-scheme-less-URL string
• path-absolute-non-Windows-file-URL string
• scheme-relative-URL string
• URL-port string
• opaque-host-and-port string
• valid opaque-host string
• path-relative-URL string
• URL-path-segment string
• single-dot URL path segment
• double-dot URL path segment
• http://url.spec.whatwg.org/#query-encoding-example
• basic URL parser
• scheme start state
• scheme state
• no scheme state
• special-scheme-missing-following-solidus
• file state
• special relative or authority state
• special authority slashes state
• path or authority state
• opaque path state
• missing-scheme-non-relative-URL
• fragment state
• relative state
• special authority ignore slashes state
• authority state
• path state
• relative slash state
• invalid-reverse-solidus
• query state
• shorten a url’s path
• invalid-credentials
• host-missing
• host state
• file host state
• hostname state
• port state
• path start state
• port-out-of-range
• port-invalid
• file slash state
• file-invalid-Windows-drive-letter
• file-invalid-Windows-drive-letter-host
• URL path serializing
• exclude fragment
• dfn for url
• http://url.spec.whatwg.org/#example-43b5cea5
• domain to Unicode
• [IDNFAQ]
• [UTS39]
• [BIDI]
• urlencoded parser
• http://url.spec.whatwg.org/#dom-url-url
• http://url.spec.whatwg.org/#dom-url-parse
• http://url.spec.whatwg.org/#dom-url-canparse
• http://url.spec.whatwg.org/#dom-url-href
• http://url.spec.whatwg.org/#dom-url-origin
• http://url.spec.whatwg.org/#dom-url-protocol
• http://url.spec.whatwg.org/#dom-url-username
• http://url.spec.whatwg.org/#dom-url-password
• http://url.spec.whatwg.org/#dom-url-host
• http://url.spec.whatwg.org/#dom-url-hostname
• http://url.spec.whatwg.org/#dom-url-port
• http://url.spec.whatwg.org/#dom-url-pathname
• http://url.spec.whatwg.org/#dom-url-search
• http://url.spec.whatwg.org/#urlsearchparams
• http://url.spec.whatwg.org/#dom-url-searchparams
• http://url.spec.whatwg.org/#dom-url-hash
• http://url.spec.whatwg.org/#dom-url-tojson
• dfn for URL
• query object
• dfn for URLSearchParams
• URL object
• API URL parser
• dfn for URL
• http://url.spec.whatwg.org/#example-5434421b
• list
• urlencoded string parser
• url
• state override
• cannot have a username/password/port
• set the username
• set the password
• http://url.spec.whatwg.org/#dom-urlsearchparams-urlsearchparams
• http://url.spec.whatwg.org/#dom-urlsearchparams-size
• http://url.spec.whatwg.org/#dom-urlsearchparams-append
• http://url.spec.whatwg.org/#dom-urlsearchparams-delete
• http://url.spec.whatwg.org/#dom-urlsearchparams-get
• http://url.spec.whatwg.org/#dom-urlsearchparams-getall
• http://url.spec.whatwg.org/#dom-urlsearchparams-has
• http://url.spec.whatwg.org/#dom-urlsearchparams-set
• http://url.spec.whatwg.org/#dom-urlsearchparams-sort
• http://url.spec.whatwg.org/#urlsearchparams-stringification-behavior
• http://url.spec.whatwg.org/#example-constructing-urlsearchparams
• application/x-www-form-urlencoded
• urlencoded serializer
• update
• http://url.spec.whatwg.org/#example-searchparams-sort
• [email protected]
• Living Standard Review Draft
• exclude fragments
• http://url.spec.whatwg.org/#URL-stringification-behavior
• http://url.spec.whatwg.org/#webkiturl
• http://url.spec.whatwg.org/#dom-url-url-url-base-url
• http://url.spec.whatwg.org/#dom-url-url-url-base-base
• http://url.spec.whatwg.org/#dom-url-parse-url-base-url
• http://url.spec.whatwg.org/#dom-url-parse-url-base-base
• http://url.spec.whatwg.org/#dom-url-canparse-url-base-url
• http://url.spec.whatwg.org/#dom-url-canparse-url-base-base
• http://url.spec.whatwg.org/#dom-urlsearchparams-urlsearchparams-init-init
• http://url.spec.whatwg.org/#dom-urlsearchparams-append-name-value-name
• http://url.spec.whatwg.org/#dom-urlsearchparams-append-name-value-value
• http://url.spec.whatwg.org/#dom-urlsearchparams-delete-name-value-name
• http://url.spec.whatwg.org/#dom-urlsearchparams-delete-name-value-value
• http://url.spec.whatwg.org/#dom-urlsearchparams-get-name-name
• http://url.spec.whatwg.org/#dom-urlsearchparams-getall-name-name
• http://url.spec.whatwg.org/#dom-urlsearchparams-has-name-value-name
• http://url.spec.whatwg.org/#dom-urlsearchparams-has-name-value-value
• http://url.spec.whatwg.org/#dom-urlsearchparams-set-name-value-name
• http://url.spec.whatwg.org/#dom-urlsearchparams-set-name-value-value

• https://whatwg.org/
• GitHub whatwg/url
• new issue
• open issues
• Chat on Matrix
• GitHub whatwg/url/commits
• @urlstandard
• web-platform-tests url/
• ongoing work
• 日本語
• 简体中文
• 한국어
• search result popularity contest
• Origin of a URI [sic]
• Unicode ToASCII
• Unicode ToUnicode
• ASCII hex digits
• ASCII digits
• ASCII alpha
• string
• code points
• code point length
• code point substring
• UTF-8 decode without BOM or fail
• byte
• ASCII upper hex digits
• byte sequence
• UTF-8 decode without BOM
• ASCII bytes
• decoded
• scalar value string
• UTF-8 encodes
• set
• C0 control
• registerProtocolHandler()
• https://tc39.es/ecma262/#sec-encodeuricomponent-uricomponent
• ASCII alphanumeric
• encoding
• Assert
• UTF-8
• getting an encoder
• I/O queue
• encode or fail
• continue
• value
• value
• ASCII code points
• scalar value
• Shift_JIS
• ISO-2022-JP
• ASCII string
• strictly splitting
• 32-bit unsigned integer
• 128-bit unsigned integer
• list
• 16-bit unsigned integer
• intentionally omitted
• ends with
• Public Suffix List algorithm
• origin
• same site
• schemelessly same site
• item
• starts with
• ASCII case-insensitive
• lowercased
• issue #397
• issue 245
• "Text Representation of Addresses" chapter of IP Version 6 Addressing Architecture
• size
• remove
• for each
• append
• tuples
• Break
• indices
• struct
• blob URL entry
• blob URL store
• length
• surrogates
• noncharacters
• resolving the blob URL
• C0 control or space
• ASCII tab or newline
• getting an output encoding
• Location
• protocol
• clone
• is empty
• ISO-2022-JP encoder
• environment
• origin
• opaque origin
• tuple origin
• same origin
• https://webidl.spec.whatwg.org/#LegacyWindowAlias
• https://webidl.spec.whatwg.org/#idl-USVString
• https://webidl.spec.whatwg.org/#idl-boolean
• https://webidl.spec.whatwg.org/#SameObject
• extract an origin
• this
• throw
• TypeError
• serialization
• empty
• https://webidl.spec.whatwg.org/#idl-sequence
• https://webidl.spec.whatwg.org/#idl-record
• https://webidl.spec.whatwg.org/#idl-unsigned-long
• https://webidl.spec.whatwg.org/#idl-undefined
• for each
• contains
• sorting in ascending order
• code unit less than
• value pairs to iterate over
• EventSource
• HashChangeEvent
• Anne van Kesteren
• Apple
• Creative Commons Attribution 4.0 International License
• BSD 3-Clause License
• https://www.unicode.org/reports/tr9/tr9-51.html
• https://encoding.spec.whatwg.org/
• https://w3c.github.io/FileAPI/
• https://html.spec.whatwg.org/multipage/
• https://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml
• https://infra.spec.whatwg.org/
• https://publicsuffix.org/
• https://www.rfc-editor.org/rfc/rfc4291
• https://www.unicode.org/reports/tr46/tr46-35.html
• https://webidl.spec.whatwg.org/
• https://tc39.es/ecma262/multipage/
• https://unicode.org/faq/idn.html
• https://www.rfc-editor.org/rfc/rfc1034
• https://www.rfc-editor.org/rfc/rfc3986
• https://www.rfc-editor.org/rfc/rfc3987
• https://www.rfc-editor.org/rfc/rfc5890
• https://www.rfc-editor.org/rfc/rfc5952
• https://www.rfc-editor.org/rfc/rfc6454
• https://www.rfc-editor.org/rfc/rfc7595
• https://www.rfc-editor.org/rfc/rfc791
• https://www.unicode.org/reports/tr36/tr36-15.html
• https://www.unicode.org/reports/tr39/tr39-32.html
• URL/URL
• URL/canParse_static
• URL/hash
• URL/host
• URL/hostname
• URL/href
• URL/origin
• URL/password
• URL/pathname
• URL/port
• URL/protocol
• URL/search
• URL/searchParams
• URL/toJSON
• URL/toString
• URL/username
• URL
• URLSearchParams/URLSearchParams
• URLSearchParams/entries
• URLSearchParams/forEach
• URLSearchParams/keys
• URLSearchParams/values
• URLSearchParams/append
• URLSearchParams/delete
• URLSearchParams/get
• URLSearchParams/getAll
• URLSearchParams/has
• URLSearchParams/set
• URLSearchParams/size
• URLSearchParams/sort
• URLSearchParams/toString
• URLSearchParams

            Domain Name: WHATWG.ORG
Registrar: NameCheap, Inc.
Domain Status: client transfer prohibited
Registry Expiry Date: 2030-03-09T02:01:33.478Z
Creation Date: 2004-03-09T02:01:33.478Z
Updated Date: 2021-02-10T08:54:42.337Z
Name Server: NS1.DIGITALOCEAN.COM
Name Server: NS2.DIGITALOCEAN.COM
Name Server: NS3.DIGITALOCEAN.COM
REGISTRAR Contact: NameCheap, Inc.
>>> Last update of RDAP database: 2026-07-12T10:21:06Z         

			User-agent: *
Disallow: /branch-snapshots/
Disallow: /commit-snapshots/
Disallow: /review-drafts/
        

SEO técnico

SEO en la página

Contenido y UX