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File Extensions

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.

3
Indexed file extensions
Popular searches:
.DOCX .7Z .AUTOCAD (DWG, DXF) .PDF .TXT .OBJ (.OBJ)

Find the right information for any file extension

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.

Search by extension Enter extensions like PDF, APK, DAT, HEIC, ZIP, or DOCX.
Browse categories Filter by documents, images, videos, archives, data, and more.
Open files safely Check file sources and use trusted software before opening unknown files.

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3 extensions
Data Letter: J Clear all
.JSON

JavaScript Object Notation

JSON (JavaScript Object Notation) is a lightweight, human-readable data-interchange format. It is widely used for transmitting data be…

Data
.JSONLD

JSON-LD (JavaScript Object Notation for Linked Data)

JSON-LD (JavaScript Object Notation for Linked Data) is a lightweight syntax serialization format used to represent structured data. I…

Data
.JT

Jupiter Tessellation

JT (Jupiter Tessellation) is an ISO standard (ISO 14306:2017) file format for lightweight 3D data visualization and product lifecycle…

Data
.JSON

JavaScript Object Notation

JSON (JavaScript Object Notation) is a lightweight, human-readable data-interchange format. It is widely used for transmitting data between a server and web ap…

Data
.JSONLD

JSON-LD (JavaScript Object Notation for Linked Data)

JSON-LD (JavaScript Object Notation for Linked Data) is a lightweight syntax serialization format used to represent structured data. It is designed to easily i…

Data
.JT

Jupiter Tessellation

JT (Jupiter Tessellation) is an ISO standard (ISO 14306:2017) file format for lightweight 3D data visualization and product lifecycle management (PLM). It's de…

Data

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.