Data File Formats and File Extensions
Ever encounter a file extension you've never seen before? Check this page for more 3,700 data formats and their corresponding file extensions.
Webopedia's Guide to File Formats & Extensions
In the list below, search for a file extension by the letter it starts with or you can view the complete list of more than 3,700 file extensions.
|Number Symbol A B C D E F G H I J K |
L M N O P Q R S T U V W X Y Z Full List
Data Files Related Terminology
The following data files and formats glossary will help you to better understand how files are stored and are accessed on your computer.
What is a File Format?
File format is a format for encoding information in a file. Each different type of file has a different file format. The file format specifies first whether the file is a binary or ASCII file, and second, how the information is organized.
What is a Filename?
All files have names. The name if a file is its filename. Different operating systems impose different restrictions on filenames. Most operating systems, for example, prohibit the use of certain characters in a filename and impose a limit on the length of a filename. In addition, many systems allow a filename extension that consists of one or more characters following the proper filename. The file extension usually indicates what type of file it is.
What is a File Extension?
File extension is one or several letters at the end of a filename. Filename extensions usually follow a period (dot) and indicate the type of information stored in the file. For example, in the filename EDIT.COM, the extension is COM, which indicates that the file is a command file. Depending on the operating system, the punctuation separating the extension from the rest of the filename may or may not be considered part of the extension itself.
What is a Pathname?
The pathname is a sequence of symbols and names that identifies a file. Every file has a name, called a filename, so the simplest type of pathname is just a filename. If you specify a filename as the pathname, the operating system looks for that file in your current working directory. However, if the file resides in a different directory, you must tell the operating system how to find that directory. You do this by specifying a path that the operating system must follow.
Editor's Recommendation: See Webopedia's Data Formats category for related terms and their definitions.
IT Solutions Builder TOP IT RESOURCES TO MOVE YOUR BUSINESS FORWARD
Which topic are you interested in?
What is your company size?
What is your job title?
What is your job function?
Searching our resource database to find your matches...
Stay up to date on the latest developments in Internet terminology with a free newsletter from Webopedia. Join to subscribe now.
The following coding and IT boot camp facts and statistics provide an introduction to the changing trends in education and training programs. Read More »Top Cloud Computing Facts
The following facts and statistics capture the changing landscape of cloud computing and how service providers and customers are keeping up with... Read More »
Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »Java Basics, Part 2
This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »