View-source URI scheme: Difference between revisions

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{{Short description|URI scheme on browsers}}

The '''view-source''' URI scheme is used by some browsers to construct [[Uniform Resource Locator|URLs]] that refer to a source display for a given resource.

{{selfref|{{redirect|View source|trying to edit a protected page on Wikipedia|WP:View source}}}}

{{primary sources|date=October 2012}}

{{lowercase title}}

The '''view-source''' [[Uniform Resource Identifier#Syntax|URI scheme]] is used by some [[Web browser|web browsers]] to construct [[Uniform Resource Identifier|URI]]s that result in the browser displaying the [[source code]] of a [[web page]] or other [[web resource]].<ref>{{Cite report |url=https://datatracker.ietf.org/doc/draft-yevstifeyev-view-source-uri/ |title=The 'view-source' URI Scheme |last=Yevstifeyev |first=Mykyta |date=2011-04-23 |publisher=Internet Engineering Task Force |issue=draft-yevstifeyev-view-source-uri-01}}</ref>

For example, thisthe [[UniformURI Resource'''<code>view-source:<nowiki>https://example.com</nowiki></code>''' Locator|URL]] wouldshould show the source of the page located at <code>[httphttps://www.example.com httphttps://www.example.com]:</code>.

'''<nowiki>view-source:http://www.example.com</nowiki>'''

In the early Internet, the View Source technique helped people learn by example to create their own web pages.<ref>{{Cite book |last1=Sahlin |first1=Doug |url=https://books.google.com/books?id=cfDRYLDyKcoC&dq=%22view+source%22&pg=PA161 |title=Building Web Sites All-in-One Desk Reference For Dummies |last2=Snell |first2=Claudia |date=2007-02-03 |publisher=John Wiley & Sons |isbn=978-0-470-12720-9 |language=en}}</ref>

==Browser Support==

[[Mozilla Firefox]] and [[Internet Explorer]] both supported the scheme, but support was dropped from Internet Explorer in [[Windows XP]] SP2 due to security problems.<ref>{{cite web

On 25 May 2011, the 'view-source' URI scheme was officially registered with IANA<ref>{{cite web|last=Yevstifeyev|first=M.|title='view-source' URI scheme registration template|url=https://www.iana.org/assignments/uri-schemes/prov/view-source|access-date=17 July 2011}}</ref> per RFC 4395.

==Browser Supportsupport==

[[Mozilla Firefox]] and [[Internet Explorer]] both supported the scheme, but support was dropped from Internet Explorer in [[Windows XP]] SP2]] due to security problems.<ref>{{cite web

|url=http://msdn.microsoft.com/en-us/library/aa767742.aspx

|title=view-source Protocol

|publisher=[[Microsoft Developer Network|MSDN]]

|accessdateaccess-date=2009-02-25

}}</ref> Firefox also suffered a similar security issue (by combining view-source and javascript[[JavaScript]] URIs<ref>{{cite web

|url=http://www.milw0rm.com/id.php?id=1007

|accessdateaccess-date=2009-02-25

|archive-url=https://web.archive.org/web/20070814075238/http://www.milw0rm.com/id.php?id=1007

|archive-date=2007-08-14

|title=Mozilla Firefox view-source:javascript url Code Execution Exploit

|publisherwork=[[milw0rm]]

|author=mikx

|date=2005-05-21

|accessdate=2009-02-25

}}</ref>), but still supported it in Firefox 1.5<ref>{{cite web

|url=http://deftone.com/blogzilla/archives/view_source_bug_fixed_and_a_tip.html

|title=View Source Bug Fixed and a Tip

|publisherwork=[[blogzilla]]

|author=jonathan

|date=2005-11-30

|accessdateaccess-date=2009-02-25

}}</ref> after being fixed. In 2009, a new discovered bug was fixed in [[Mozilla Firefox 3|Firefox 3.0.9]].<ref>{{cite web|url=httphttps://www.mozilla.org/security/announce/2009/mfsa2009-17.html|title=MFSA 2009-17: Same-origin violations when Adobe Flash loaded via view-source scheme|last=Fleischer|first=Gregory|date=April 21, 2009|publisherwork=[[Mozilla]]|accessdateaccess-date=2009-04-22}}</ref>

{| class="wikitable sortable"

* Mozilla Firefox - supported

! Browser !! Supported?

* a [[Add-on (Mozilla)|Mozilla Firefox extension]] called ''View Source Choice'' add more option to the behavior.<ref>{{cite web|url=https://addons.mozilla.org/de/firefox/addon/2070|title=View Source Choice|last=mackers|coauthors=Briks|publisher=[[Mozilla Add-ons]]|date=2008-03-24|accessdate=2009-04-22}}</ref>

|-

* [[Netscape]] - supported

|[[Mozilla Firefox]] || {{yes|supported}}<ref>{{cite web|title=View Source - Firefox Developer Tools |work=MDN|url=https://developer.mozilla.org/en-US/docs/Tools/View_source}}</ref>

* Internet Explorer [[Internet Explorer 4|4]], [[Internet Explorer 5|5]], and [[Internet Explorer 6|6]] - supported

|-

* Internet Explorer [[Internet Explorer 6|6]], [[Internet Explorer 7|7]], and [[Internet Explorer 8|8]] - not supported after Windows XP SP2

| [[SeaMonkey]] || {{yes|supported}}

* [[Safari (web browser)|Safari]] 3.2.1 - supported{{Citation needed|date=January 2010}}

|-

* [[Opera (web browser)|Opera]] 7, 8, 9, 10 - not supported

*| [[Netscape]] -|| {{yes|supported}}

* [[Google Chrome]] - supported{{Citation needed|date=January 2010}}

|-

* [[Epiphany (browser)|Epiphany]] - supported{{Citation needed|date=January 2010}}

*| Internet Explorer [[Internet Explorer 4|4]], [[Internet Explorer 5|5]], and [[Internet Explorer 6|6]] -|| {{yes|supported}}

|-

*| Internet Explorer [[Internet Explorer 6|6]], [[Internet Explorer 7|7]], and [[Internet Explorer 8|8]] -|| {{no|not supported}} after Windows XP SP2

|-

*| [[Safari (web browser)|Safari]] 3.2.1 -|| supported{{Citation neededyes|date=January 2010supported}}

|-

| [[Safari (web browser)|Safari]] 5, 6 || {{no|not supported}}

|-

*| [[Opera (web browser)|Opera]] 7, 8, 9, 10, -11 || {{no|not supported}}

|-

| [[Opera (web browser)|Opera]] 15 and up || {{yes|supported}}

|-

| [[Google Chrome]] || {{yes|supported}}<ref>{{cite web|title=Google Chrome's Full List of Special about: Pages|work=Lifehacker|date=4 September 2008 |url=http://lifehacker.com/5045164/google-chromes-full-list-of-special-about-pages}}</ref>

|-

| [[Web (web browser)|Web]] || {{yes|supported}}

|-

| [[webOS|HP webOS]] || {{partial|via third-party app}} (Internalz Pro)<ref>{{cite web|url=http://www.precentral.net/internalz-1-3-brings-style-dark-theme-and-more|title=Internalz 1.3 brings style with a dark theme and more|last=Robitaille|first=Jason|publisher=PreCentral|date=2010-08-28|access-date=2011-02-11|archive-url=https://web.archive.org/web/20110512181830/http://www.precentral.net/internalz-1-3-brings-style-dark-theme-and-more|archive-date=2011-05-12|url-status=dead}}</ref>

|}

==References==

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{{URI scheme}}

{{web browsers}}

{{Subject bar|portal1=Computer programming|portal2=Internet|d=y}}

[[Category:Web browsers]]

[[Category:URI schemeschemes]]

[[Category:Internet properties established in 2011]]

[[pt:View-source]]

[[ru:View-source]]