All File Extensions Directory

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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.

File Extensions

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PHP HTML

Visual Basic Script

ASP.NET Web Page

JavaScript File

PowerShell Script

JavaServer Pages

Cascading Style Sheet

TypeScript JSX

CommonJS Module

Handlebars Template

C# HTML

Python Compiled File

FreeMarker Template Language File

Motorola S-Record

Python Dynamic Module

ASP.NET Razor Markup

PHP Hypertext Preprocessor

Apache Thrift Definition File

Active Server Pages Extended

Mustache Template

JavaScript Module

Extensible Stylesheet Language Transformations

Embedded Ruby

Pug Template