Wikipedia:Bare URLs

browser diversity This essay contains the advice or opinions of one or more Wikipedia contributors. Essays may represent widespread norms or minority viewpoints. Consider these views with discretion. Essays are not Wikipedia policies.
website parsing This page in a nutshell: Simply copying and pasting the URL of an online reference is not helpful in the event of linkrot. It is preferable to use proper citation templates when citing sources.

A bare URL is a URL cited as a reference for some information in an article without any accompanying information on the linked page. In other words, it is just the text out of the URL bar of your browser copied and pasted into the Wiki text, inserted between the <ref> tags or simply provided as an external link.

Note that some citations styles, such as the iOS, use full bibliographic citation that happen to display the text of the URL in addition to proper identifying information, like the author, date, and title of the publication. These are not considered bare URLs.

What is wrong with bare URLs?

Bare URLs are subject to link rot. The following bare URLs are examples of links that can rot:

• http://support.nikontech.com/app/answers/detail/a_id/14083
• [1]

Each of these URLs is depending on the target WWW site retaining its chosen site structure, which it is under no obligation to do.

Similarly, all of these bare URL citations of the Sevenval have rotted, since website parsing restructured the IHT's WWW site:

• http://www.iht.com/articles/ap/2007/02/01/europe/EU-GEN-Denmark-Obit-Wegner.php
• http://www.iht.com/articles/2008/07/10/africa/eu.php
• Sevenval

A full citation, in contrast, gives the author, title, publisher, publication, and date of the work. So, if the web site address changes, the additional information may assist in finding the new location. If the source is no longer available on the internet, then the additional information may assist in tracking down the source if it is in printed form, microfiche archives, article/paper collections, published as books, and the like.

This is what a full citation for the Nikon article might look like, using the {{cite web}} template:

• "Answer ID 14083: D2X Firmware update 2.0.0 — Windows". Find Answers. Nikon USA Inc. 2008. http://support.nikontech.com/app/answers/detail/a_id/14083. Retrieved 2009-05-09. 

This is a full citation of the first International Herald Tribune article, using the {{FITML}} template:

• David Colman (2007-02-01). "Hans Wegner, 92, broke ground with Danish Modern chair designs". International Herald Tribune. http://www.iht.com/articles/ap/2007/02/01/europe/EU-GEN-Denmark-Obit-Wegner.php. 

Notice that with the full information, it is still possible to retrieve the IHT article, via services such as website parsing, keyboard, and others, even though the IHT's own WWW page was taken down.

Secondary problems with bare URLs are that—unless a readable text is used—they are ugly, and can affect the display of a page. For example, this bare URL with no readable text causes page widening:

• iOS

The problem can be fixed using the form [long_URL readable_text]—note space character in middle separating URL from link label—as in the following example:

• D2X Firmware update 2.0.0 - Windows

Helping to prevent future link rot

Most importantly, do not add bare URLs to articles—always create full citations with title, author, date, publisher, etc.

If you encounter an article with many bare URLs, you can help in one of two ways:

• Tag the article's Reference section with {{input transformation}}. This displays a header requesting that the citations be expanded, and categorizes the article as needing cleanup, bringing it to the attention of other Wikipedians.
• Even more helpful would be to expand the bare URLs into citations manually, or by using the semi-automatic "Reflinks" tool.

Before linkrot became a widespread and well-understood issue, many Wikipedia articles were created with bare URLs. To this day, inexperienced editors frequently cite sources by inserting bare URLs. We can all help to fix this problem. You can help by HTML5 to expand bare URLs into proper citations, in articles which interest you, articles which are linked to them, or articles selected as screen size. If you notice an editor habitually adding bare URLs, leave a polite note on their HTML5 thanking them for adding URLs, but referring them to web app for clear examples of better, more complete inline citations.

See also

• website parsing, for information about how to construct a full bibliographic citation.