CSS support in web browsers did not, at the time of sIFR’s creation, allow webpages to dynamically include web fonts , so it was no guarantee that CSS or HTML would be the specified font installed in their system. sIFR embeds a text in a flash element that displays the text, pre-empting the need for a manually pre-installed on a user’s system.
A common technique is to use raster graphics to display text in a font that can not be trusted. Text created this way pixelates when scaled and can not be partially selected. In contrast, sIFR text elements mimic normal HTML text – they are relatively resizable and copyable.
While sIFR gives us better typography today, it is clearly not the solution for the next 20 years.
SIFR has been used on the web, such as those of GE , Nike and Red Hat . As of December 2008, the current sIFR release is version 2.0.7. Version 3 is in beta. 
Since the establishment of sIFR, dynamic web fonts Support in browsers has-been Renewed, with at least the latest versions of the oven Most Popular browsers Supporting Them.
Older alternatives to sIFR included:
- Facelift Image Replacement (FLIR) is a similar software to sIFR. But instead of using flash, it embeds plain images, which are generated automatically from the text on the webpage. So even if you do not have a flash plugin installed, it will be replaced by FLIR. However, FLIR requires that the website host is capable of running PHP , and it is even less accessible than sIFR. [ dubious – discuss ]
The name of the original technique was derived from an anagram of the acronym for the CSS image-replacement technique, it was designed to replace, Fahrner Image Replacement .
- Web typography
- Jump up^ “Online type”. (Oct. 2005). Computer Arts Projects, p. 64.
- Jump up^ Wubben, Mark. “sIFR Documentation & FAQ” . Retrieved 2007-07-20 .
- Jump up^ Mendez, David. “How to display Flash SIFR with a Flash Block Plugin Installed” . Retrieved 2010-12-28