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Facts About:  | FAVICON.ICO | Favicon ico | Favicon.com | Favicon.ca | Favicon.net

FAVICON.ICO is a web page icon. Favicon.com is a service creating favicons.

FAVICON.ICOA favicon - Favicon.ico - (short for 'favorites icon'), also known as a website icon, page icon or urlicon, is an icon associated with a particular website or webpage. Favicon.com

 

A web designer can create such icons in several ways, and many recent web browsers can then make use of them. Browsers that support them may display them in the browser's URL bar, next to the site's name in lists of bookmarks, and next to the page's title in a tabbed document interface.

The original means of defining a favicon was by placing a file called favicon.ico in the root directory of a web server. This would then automatically be used in Internet Explorer's favorites (bookmarks) display. Later, however, a more flexible system was created, using HTML to indicate the location of an icon for any given page.

 

This is achieved by adding two link elements in the <head> section of the document as detailed below. In this way, any appropriately sized (16×16 pixels or larger) image can be used, and although many still use the ICO format, other browsers now also support the PNG and animated GIF image formats.

Most modern browsers implement both methods. Because of this, web servers receive many requests for the file "favicon.ico" even if it doesn't exist. This may annoy web server administrators by creating many server log entries, and unnecessarily loading the disk, CPU, and network. Another common problem is that the favicons may disappear if the browser's cache is emptied.

Originally, Internet Explorer only used favicons for bookmarks (for instance MSIE 6.0), which created a minor privacy concern in that a site owner could tell how many people had bookmarked their site by checking the access logs to see how many people downloaded the favicon.ico file. However, since newer versions of Internet Explorer (e.g. 7.0) and most other browsers also display the favicon in the address bar on every visit, this is becoming less of an issue.

 

This "favicon.ico" used to have an interesting side-effect. The side-effect applied whether or not you bothered to put a special "favicon.ico" on your site. You used to be able to find out the number of IE 5 users who bookmarked your site by simply counting the requests for "favicon.ico" in your web server logs, since IE 5 only asked for the favicon.ico file when a site was placed into the "Favorites" menu. From the number of favicon.ico requests, you could estimate the total number of people who bookmark your site by applying this formula: number of IE 5 bookmarks divided by the fraction of your visitors using IE 5.


 

Facts About:  | FAVICON.ICO | Favicon ico | Favicon.com | Favicon.ca | Favicon.net