Browse file extensions by category or letter. Learn what each file type is used for and find software that can open, view, edit, or convert it.
Use this directory to look up file formats, understand what files are used for, and find compatible applications for Windows, macOS, Linux, mobile, and online tools.
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The Additive Manufacturing File Format (AMF) is an open standard file format designed for describing objects intended for 3D printing…
The AMTI file extension is primarily associated with Anquet Maps, a digital mapping software widely used in the United Kingdom for out…
An Adobe Native Extension (ANE) is a specialized file format used by developers working with the Adobe AIR (Adobe Integrated Runtime)…
Animated Portable Network Graphics (APNG) is a file format that extends the Portable Network Graphics (PNG) format to support animated…
Monkey's Audio (APE) is a lossless audio compression format. This means that, unlike lossy formats like MP3 or AAC, no audio data is d…
The APKM file extension typically refers to the manifest file associated with an Android Package Kit (APK). While the APK itself is an…
The .apks file extension represents an Android Package Set Archive. This archive format is used to bundle multiple APK (Android Packag…
APNG (Animated Portable Network Graphics) is a file format that extends the PNG (Portable Network Graphics) specification to allow for…
The .app extension on macOS signifies an Application Bundle. This isn't a single file, but rather a directory (presented as a single f…
AppImage is a format for distributing portable software on Linux without needing superuser permissions to install the application. It…
The .appx file extension is used for application packages in the Universal Windows Platform (UWP). It's essentially a ZIP archive that…
The ARFF (Attribute-Relation File Format) is a text file format developed by the Machine Learning Group at the University of Waikato f…
The Apache Arrow IPC Stream format (.arrow) is a binary file format designed for efficient data transfer and storage, particularly wit…
ARW files are raw image files created by Sony digital cameras. They contain minimally processed data directly from the camera's sensor…
An ARX file is an AutoCAD Runtime Extension file, which serves as a compiled plugin or add-on for Autodesk AutoCAD software. Developed…
The ASCII Grid file format (.asc) is a plain text raster data format commonly used for representing spatial data, particularly elevati…
AsciiDoc is a human-readable document format that is semantically equivalent to DocBook XML, but uses a plain text markup language. It…
The Advanced Systems Format (ASF), formerly known as Active Streaming Format or Advanced Streaming Format, is Microsoft's proprietary…
An ASM file is a source code file written in Assembly language, which is a low-level programming language closely related to machine c…
ASP.NET files, typically using the `.aspx` extension (the extension value we'll focus on), are web pages generated using Microsoft's A…
ASPX (Active Server Pages Extended) is a file extension for web pages generated by Microsoft's ASP.NET web framework. These files cont…
The .ass file extension represents a subtitle file format known as Advanced SubStation Alpha. It's a text-based format used to store s…
A Unity Asset Bundle is an archive file that contains platform-specific non-code assets such as models, textures, prefabs, audio clips…
The .assets file extension is primarily associated with the Unity game engine, developed by Unity Technologies. These files serve as r…
The Additive Manufacturing File Format (AMF) is an open standard file format designed for describing objects intended for 3D printing. It was developed as a su…
The AMTI file extension is primarily associated with Anquet Maps, a digital mapping software widely used in the United Kingdom for outdoor recreation, navigati…
An Adobe Native Extension (ANE) is a specialized file format used by developers working with the Adobe AIR (Adobe Integrated Runtime) platform, now maintained…
Animated Portable Network Graphics (APNG) is a file format that extends the Portable Network Graphics (PNG) format to support animated images. It is similar to…
Monkey's Audio (APE) is a lossless audio compression format. This means that, unlike lossy formats like MP3 or AAC, no audio data is discarded during the compr…
The APKM file extension typically refers to the manifest file associated with an Android Package Kit (APK). While the APK itself is an archive containing all t…
The .apks file extension represents an Android Package Set Archive. This archive format is used to bundle multiple APK (Android Package Kit) files together. Th…
APNG (Animated Portable Network Graphics) is a file format that extends the PNG (Portable Network Graphics) specification to allow for animated images. It's es…
The .app extension on macOS signifies an Application Bundle. This isn't a single file, but rather a directory (presented as a single file in the Finder) that c…
AppImage is a format for distributing portable software on Linux without needing superuser permissions to install the application. It bundles an application an…
The .appx file extension is used for application packages in the Universal Windows Platform (UWP). It's essentially a ZIP archive that contains all the files n…
The ARFF (Attribute-Relation File Format) is a text file format developed by the Machine Learning Group at the University of Waikato for describing datasets us…
The Apache Arrow IPC Stream format (.arrow) is a binary file format designed for efficient data transfer and storage, particularly within the Apache Arrow ecos…
ARW files are raw image files created by Sony digital cameras. They contain minimally processed data directly from the camera's sensor. This means that the ARW…
An ARX file is an AutoCAD Runtime Extension file, which serves as a compiled plugin or add-on for Autodesk AutoCAD software. Developed using the ObjectARX (Aut…
The ASCII Grid file format (.asc) is a plain text raster data format commonly used for representing spatial data, particularly elevation models, terrain data…
AsciiDoc is a human-readable document format that is semantically equivalent to DocBook XML, but uses a plain text markup language. It's designed for writing n…
The Advanced Systems Format (ASF), formerly known as Active Streaming Format or Advanced Streaming Format, is Microsoft's proprietary digital audio and digital…
An ASM file is a source code file written in Assembly language, which is a low-level programming language closely related to machine code instructions. Unlike…
ASP.NET files, typically using the `.aspx` extension (the extension value we'll focus on), are web pages generated using Microsoft's ASP.NET framework. These f…
ASPX (Active Server Pages Extended) is a file extension for web pages generated by Microsoft's ASP.NET web framework. These files contain a combination of HTML…
The .ass file extension represents a subtitle file format known as Advanced SubStation Alpha. It's a text-based format used to store subtitle information for v…
A Unity Asset Bundle is an archive file that contains platform-specific non-code assets such as models, textures, prefabs, audio clips, and even entire scenes…
The .assets file extension is primarily associated with the Unity game engine, developed by Unity Technologies. These files serve as resource containers that s…
Everything you need to know about file extensions