MIME File Type Explorer is a desktop Freedesktop Shared-MIME-Info database browser, desktop handler viewer, and live file magic-byte header inspector for Linux. An independent Linux alternative inspired by file type management utilities such as FileTypesMan, it parses the system /usr/share/mime database and desktop application caches to inspect registered media types and verify real files on disk.

Key Features:

• Full Shared-MIME-Info Registry Browser: Parses /usr/share/mime/{types,globs2, aliases,subclasses,generic-icons,magic} across 1,000+ registered MIME types spanning application, audio, font, image, model, multipart, text, and video.
• Subclass Hierarchy & Desktop Handlers: Displays parent MIME inheritance chains, alias mappings, generic icon names, XML type descriptions, and associated .desktop handlers from mimeinfo.cache and user mimeapps.list.
• Live File Magic-Byte vs Extension Inspector: Reads real files and folders to compare filename-extension MIME inference against binary MIME-Magic header signatures, flagging mismatched or extensionless files with a 128-byte hex dump.
• Category Analytics & Reports: Renders a media-category distribution chart and exports full MIME catalogs and file inspection results to CSV and JSON.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by NirSoft.