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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A P12 file is a binary archive file format used for storing several cryptography objects as a single file. It is based on the Public-K…
The P7B file extension, often associated with the PKCS#7 standard (Public-Key Cryptography Standards #7), typically denotes a file con…
A P7C file is a digital certificate file that follows the Public-Key Cryptography Standards #7 (PKCS #7) format. It is primarily used…
A P7S file is a digital signature file used to verify the authenticity and integrity of an email or document. It is based on the Publi…
The .pages file extension is associated with documents created by Apple Pages, a word processing and page layout application developed…
The Parasolid file format (.x_t, .x_b, .xmt_txt, .xmt_bin) is a geometric modeling kernel format widely used in CAD/CAM/CAE software…
Parasolid files (.x_t for text format and .x_b for binary format) are CAD (Computer-Aided Design) files used for storing 3D solid mode…
Parasolid files, typically with extensions like .x_t (text) or .x_b (binary), are a common format for representing 3D solid models. Th…
Apache Parquet is a columnar storage format optimized for use with big data processing frameworks. Unlike row-oriented formats, Parque…
A '.partial' file extension typically indicates an incomplete or partially downloaded file. These files are created by download manage…
The /etc/passwd file is a fundamental configuration file in Unix-like operating systems, including Linux and macOS. It is a plain-text…
A patch file is a specialized text document that contains instructions on how to modify a source code file or a set of files. It is ty…
The PBD file extension is primarily associated with EaseUS Todo Backup, a comprehensive backup and disaster recovery solution. A PBD f…
A PBL file, commonly referred to as a 'Pibble,' is a library file used by PowerBuilder, an integrated development environment (IDE) cu…
A PBR file is a PowerBuilder Resource file used by the PowerBuilder development environment, originally created by Sybase and now main…
The PCAP (Packet Capture) file format is a standardized application programming interface and file format used for capturing and recor…
The PCAP Next Generation (pcap-ng) file format is the successor to the original libpcap (pcap) format, designed to overcome the limita…
The PCD (Point Cloud Data) file format is a standard file format used primarily in the field of 3D computer vision and robotics. It wa…
The PCK file extension is most commonly associated with the Godot Engine, a popular open-source 2D and 3D game engine. In this context…
The PDB (Protein Data Bank) file format is a standard text-based file format used to store the three-dimensional structural data of bi…
The PDF (Portable Document Format) is a file format developed by Adobe in the 1990s to present documents, including text formatting an…
The PEF file extension represents a raw image format used by Pentax digital cameras. Raw image formats, like PEF, store the unprocesse…
The .pem file extension stands for Privacy-Enhanced Mail, although its usage has evolved significantly beyond its original email secur…
A PFX file, which stands for Personal Information Exchange, is a binary format used for storing a certificate, its private key, and an…
A P12 file is a binary archive file format used for storing several cryptography objects as a single file. It is based on the Public-Key Cryptography Standards…
The P7B file extension, often associated with the PKCS#7 standard (Public-Key Cryptography Standards #7), typically denotes a file containing a set of digital…
A P7C file is a digital certificate file that follows the Public-Key Cryptography Standards #7 (PKCS #7) format. It is primarily used to store and distribute p…
A P7S file is a digital signature file used to verify the authenticity and integrity of an email or document. It is based on the Public-Key Cryptography Standa…
The .pages file extension is associated with documents created by Apple Pages, a word processing and page layout application developed by Apple Inc. as part of…
The Parasolid file format (.x_t, .x_b, .xmt_txt, .xmt_bin) is a geometric modeling kernel format widely used in CAD/CAM/CAE software. It's a proprietary format…
Parasolid files (.x_t for text format and .x_b for binary format) are CAD (Computer-Aided Design) files used for storing 3D solid models. They are the native f…
Parasolid files, typically with extensions like .x_t (text) or .x_b (binary), are a common format for representing 3D solid models. They are the native file fo…
Apache Parquet is a columnar storage format optimized for use with big data processing frameworks. Unlike row-oriented formats, Parquet stores data by columns…
A '.partial' file extension typically indicates an incomplete or partially downloaded file. These files are created by download managers or web browsers when a…
The /etc/passwd file is a fundamental configuration file in Unix-like operating systems, including Linux and macOS. It is a plain-text file that contains essen…
A patch file is a specialized text document that contains instructions on how to modify a source code file or a set of files. It is typically generated by a 'd…
The PBD file extension is primarily associated with EaseUS Todo Backup, a comprehensive backup and disaster recovery solution. A PBD file serves as a proprieta…
A PBL file, commonly referred to as a 'Pibble,' is a library file used by PowerBuilder, an integrated development environment (IDE) currently developed by Appe…
A PBR file is a PowerBuilder Resource file used by the PowerBuilder development environment, originally created by Sybase and now maintained by Appeon. These f…
The PCAP (Packet Capture) file format is a standardized application programming interface and file format used for capturing and recording network traffic. It…
The PCAP Next Generation (pcap-ng) file format is the successor to the original libpcap (pcap) format, designed to overcome the limitations of its predecessor…
The PCD (Point Cloud Data) file format is a standard file format used primarily in the field of 3D computer vision and robotics. It was developed to support th…
The PCK file extension is most commonly associated with the Godot Engine, a popular open-source 2D and 3D game engine. In this context, a PCK file is a package…
The PDB (Protein Data Bank) file format is a standard text-based file format used to store the three-dimensional structural data of biological molecules, prima…
The PDF (Portable Document Format) is a file format developed by Adobe in the 1990s to present documents, including text formatting and images, in a manner ind…
The PEF file extension represents a raw image format used by Pentax digital cameras. Raw image formats, like PEF, store the unprocessed data captured by the ca…
The .pem file extension stands for Privacy-Enhanced Mail, although its usage has evolved significantly beyond its original email security context. Today, PEM f…
A PFX file, which stands for Personal Information Exchange, is a binary format used for storing a certificate, its private key, and any intermediate certificat…
Everything you need to know about file extensions