Fileinfo
FileInfo.com is a database of file extensions and associated software, with search and file-type submission tools.
About Fileinfo
FileInfo.com is a file format database that documents over 10,000 file extensions. It functions as a central registry of file extensions. It provides descriptions of file types and information about the software programs associated with them.
You can search for an extension, use advanced search, or drag and drop a file to view its details. The site also lets you submit a file type, browse a daily featured file type, and check lists of weekly top extensions. Each entry explains the format and identifies programs that can open it. It also recommends universal file viewers for Windows, Mac, and Android.
It suits anyone who encounters an unknown file and needs to identify it. This includes general computer users, students, office workers, and developers working with different file formats.
Key features
- Search over 10,000 file extensions and software programs
- Use advanced search for file types
- Drag and drop a file to view details
- Submit a file type to the database
- Find programs that open specific files
Best for: People who encounter unknown file extensions and need to identify the format and programs that open them.
Good for
- Database of over 10,000 file extensions
- File upload to view file details
- Lists programs that open each file
- Related viewers for Windows, Mac, and Android
Fileinfo at a glance
- Website
- fileinfo.com
- Category
- Software & Utilities › File Utilities
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Android, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for File Utilities
Fileinfo alternatives
Tools and sites you could use instead, ranked by how closely they match.
Find file extensions and the programs associated with opening or viewing them in the FILExt directory.
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Fileinfo FAQ
What is FileInfo.com?
It is a searchable database of over 10,000 file extensions with details about file types and associated software.
How can I identify an unknown file type?
You can search for its extension or drag and drop the file on the site to view file details.
Can I find which program opens a file?
Yes. Each file type entry includes information about programs that open the file.
Can I add a file type to FileInfo.com?
Yes. The site provides a Submit a File Type option.
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