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.
Refine your search with categories and letters
A .hat file is associated with Hattrick, a popular online football (soccer) management simulation game. These files typically contain…
A .hdd file is a hard disk image file, essentially a complete sector-by-sector copy of a physical hard drive or a partition. It contai…
HDF5 is a versatile, open-source file format designed to store and organize large amounts of numerical data. It's particularly well-su…
A .hdmp file, also known as a Windows Heap Dump file, is a snapshot of the memory heap of a running process at a specific point in tim…
The Intel HEX file format is a widely used ASCII text file format for conveying binary data, primarily for programming microcontroller…
The .hgt file extension is associated with SRTM (Shuttle Radar Topography Mission) data. These files contain elevation data, represent…
The HRM file extension is a data format primarily associated with Polar Electro heart rate monitors and their legacy training software…
The HOOPS Stream Format (HSF) is a highly compressed, binary file format designed specifically for the efficient storage and transmiss…
HTML (HyperText Markup Language) is the standard markup language for creating web pages. It provides the structure and content of a we…
HTML (HyperText Markup Language) is the standard markup language for creating web pages. HTML5 is the latest major revision of HTML, a…
A .hat file is associated with Hattrick, a popular online football (soccer) management simulation game. These files typically contain data related to the game…
A .hdd file is a hard disk image file, essentially a complete sector-by-sector copy of a physical hard drive or a partition. It contains all the data, file sys…
HDF5 is a versatile, open-source file format designed to store and organize large amounts of numerical data. It's particularly well-suited for scientific and e…
A .hdmp file, also known as a Windows Heap Dump file, is a snapshot of the memory heap of a running process at a specific point in time. It's primarily used fo…
The Intel HEX file format is a widely used ASCII text file format for conveying binary data, primarily for programming microcontrollers, EPROMs, and other prog…
The .hgt file extension is associated with SRTM (Shuttle Radar Topography Mission) data. These files contain elevation data, representing terrain height above…
The HRM file extension is a data format primarily associated with Polar Electro heart rate monitors and their legacy training software, such as Polar ProTrain…
The HOOPS Stream Format (HSF) is a highly compressed, binary file format designed specifically for the efficient storage and transmission of complex 3D visuali…
HTML (HyperText Markup Language) is the standard markup language for creating web pages. It provides the structure and content of a webpage, defining elements…
HTML (HyperText Markup Language) is the standard markup language for creating web pages. HTML5 is the latest major revision of HTML, and it includes a number o…
Everything you need to know about file extensions