Website Description Files

• WEB is used as an extension for the BlackWidow Website Description file. BlackWidow is a website download manager that allows you to download from websites. BlackWidow will download the entire site or will allow you to specify which files, including audio and images, to download.
  
  

Past Uses

• According to "The Complete Guide to A+ Certification," WEB was a common file extension that was used in Corel Xara. Corel Xara is no longer available, and has been replaced by Xara Extreme. According to Xara's news blog, Xara Extreme opens WEB files, but does not support all WEB file functions.
  
  

Game Software

• The WEB extension is also used as a website data file in a crossword software program called CrossDown. CrossDown is software used by professional crossword puzzle designers to design the crossword puzzles you see in magazines.
  
  

Graphic Programs

• A WEB file can also be a Creatacard website project used by the Broderbund software company. WEB sometimes refers to Internet vector files, which are graphics files designed in vector format.
  
  

Other Uses

• In addition to the common uses listed above, according to filext.com, WEB is used as a file extension for Internet data for many different programs.