Everything you need to know about file formats, extensions, and how to work with different file types. From common documents to rare specialized formats.
Complete alphabetical reference of 1000+ file extensions with detailed explanations, software recommendations, and conversion options.
How to safely handle unknown file types, avoid malware, and protect your computer when opening files from unknown sources.
Ensure your files work across Windows, Mac, Linux, iOS, and Android. Complete compatibility matrix and conversion guides.
Learn about text documents, PDFs, spreadsheets, and presentations
Complete guide to photo formats, graphics, and visual file types
Media formats, codecs, and multimedia file explanations
Try our instant file extension search tool to identify any file type in seconds.