File Types

OpenDocument Graphics: an open standard format for vector drawings maintained by OASIS. It is the default format for LibreOffice Draw.

OpenDocument Presentation: an open standard presentation format maintained by OASIS. It is the default format for LibreOffice Impress.

OpenDocument Spreadsheet: an open standard spreadsheet format maintained by OASIS. It is the default format for LibreOffice Calc.

OpenDocument Text: an open standard document format maintained by OASIS. It is the default format for LibreOffice Writer and other open-source office suites.

An open, patent-free lossy audio compression format within the Ogg container. It offers quality comparable to or better than MP3 at similar bitrates.

An open, royalty-free video container format using the Theora video codec within the Ogg container. An early open alternative to proprietary web video formats.

Open Neural Network Exchange: an open format for representing machine learning models, enabling interoperability between PyTorch, TensorFlow, and other frameworks.

Outline Processor Markup Language: an XML format for outlines and hierarchical data. Commonly used to import/export RSS feed subscriptions between readers.

Optimized Row Columnar: a columnar storage format for Hadoop workloads, offering high compression and fast reads for analytical queries in Hive and Spark.

OpenStreetMap XML: the native data format for OpenStreetMap, the collaborative open map project. Contains nodes, ways, and relations describing geographic features.

OpenType Font: a scalable font format developed jointly by Microsoft and Adobe. It extends TrueType with advanced typographic features, ligatures, and multi-language support.

Open XML Paper Specification: the updated, ECMA-standardized version of XPS for fixed-layout document exchange.

OpenAPI Specification (formerly Swagger): a standard for describing RESTful APIs enabling automatic documentation, SDK generation, and testing.

A versatile, open, royalty-free audio codec developed by the IETF. It excels at both voice and music compression, offering the best quality-per-bit ratio of any audio codec.

An Emacs major mode document format for note-taking, task management, and literate programming. Supports outlining, tables, code blocks, and export to HTML/PDF/LaTeX.

PKCS#12: a binary format for storing a certificate chain and private key in a single encrypted file. Used for importing/exporting certificates with their private keys.

Portable Archive Exchange: a POSIX standard archive format combining features of tar and cpio with extended header support.

Point Cloud Data: the file format used by the Point Cloud Library (PCL) for storing 3D point cloud data from LiDAR and depth sensors.

Pulse-Code Modulation: a method for digitally representing raw analog audio signals. It is the standard uncompressed audio format used in CDs, WAV files, and professional audio.

PiCture eXchange: an early bitmap image format originally developed for PC Paintbrush. It uses run-length encoding compression.