View all extensions

File Extensions

Clear explanations, compatible software, and practical guidance for file extensions.

6
Indexed file extensions
Popular searches:
.docx .psb .phtml .odt .pdf .7z

Filter extensions

Refine your search with categories and letters

Filter by category
All categories Archive Audio Data Document Executable Image Programming Video
Filter by letter
All 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
6 extensions
Programming Letter: A Clear all
.A51

Intel 8051 Assembly Language Source Code File

Programming
.ABNF

Augmented Backus-Naur Form

Programming
.ANE

Adobe Native Extension

Programming
.ASM

Assembly Language Source Code File

Programming
.ASP.NET

ASP.NET Web Page

Programming
.ASPX

Active Server Pages Extended

Programming
.A51

Intel 8051 Assembly Language Source Code File

Programming
.ABNF

Augmented Backus-Naur Form

Programming
.ANE

Adobe Native Extension

Programming
.ASM

Assembly Language Source Code File

Programming
.ASP.NET

ASP.NET Web Page

Programming
.ASPX

Active Server Pages Extended

Programming

Frequently Asked Questions

Everything you need to know about file extensions

You can search by entering a file extension directly in the search bar or browse the directory by category or alphabetical index.

Each listing provides a definition of the file extension, common use cases, compatible software, supported platforms, and related or alternative formats.

The database is updated regularly to reflect new file extensions, changes in software compatibility, and evolving file format standards.