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The view-source URI scheme is used by some web browsers to construct URIs that result in the browser displaying the source code of a web page or other web resource. [1]
For example, the URI view-source:https://example.com should show the source of the page located at https://example.com .
In the early internet, View Source helped people to create their own web pages, learning by example. [2]
On 25 May 2011, the 'view-source' URI scheme was officially registered with IANA [3] per RFC 4395.
Firefox and Internet Explorer both supported the scheme, but support was dropped from Internet Explorer in Windows XP SP2 due to security problems. [4] Firefox also suffered a similar security issue (by combining view-source and javascript URIs [5] ), but still supported it in Firefox 1.5 [6] after being fixed. In 2009 a new discovered bug was fixed in Firefox 3.0.9. [7]
| Browser | Supported? |
|---|---|
| Mozilla Firefox | supported [8] |
| SeaMonkey | supported |
| Netscape | supported |
| Internet Explorer 4, 5 and 6 | supported |
| Internet Explorer 6, 7, and 8 | not supported after Windows XP SP2 |
| Safari 3.2.1 | supported |
| Safari 5, 6 | not supported |
| Opera 7, 8, 9, 10, 11 | not supported |
| Opera 15 and up | supported |
| Google Chrome | supported [9] |
| Web | supported |
| HP webOS | via third-party app (Internalz Pro) [10] |
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