File Extensions Reference
Common file extensions — what they are, what opens them, and typical MIME.
Reference
Documents
| Ext | Format | Opens with |
|---|---|---|
| Portable Document Format | Any PDF reader | |
| docx | Microsoft Word (OOXML) | Word, LibreOffice |
| xlsx | Microsoft Excel | Excel, LibreOffice, Numbers |
| pptx | PowerPoint | PowerPoint, Keynote |
| odt | OpenDocument Text | LibreOffice, Word |
| rtf | Rich Text Format | Almost any editor |
| epub | EPUB ebook | Kindle, Calibre, readers |
| mobi | Kindle ebook | Kindle |
Archives
| Ext | Format | Compression |
|---|---|---|
| zip | ZIP | DEFLATE (most common) |
| tar | TAR | None (archive only) |
| tar.gz / tgz | gzipped tar | gzip |
| tar.bz2 | bzipped tar | bzip2 (slower, smaller) |
| tar.xz | xz-compressed tar | LZMA2 (smallest, slow) |
| 7z | 7-Zip | LZMA2 |
| rar | WinRAR | Proprietary |
| gz | gzip | gzip (single file) |
Code
| Ext | Language |
|---|---|
| .py | Python |
| .js | JavaScript |
| .ts | TypeScript |
| .rs | Rust |
| .go | Go |
| .c / .h | C |
| .cpp / .hpp | C++ |
| .java | Java |
| .kt | Kotlin |
| .swift | Swift |
| .rb | Ruby |
| .php | PHP |
| .cs | C# |
| .lua | Lua |
| .sh | Bash |
| .ps1 | PowerShell |
| .sql | SQL |
| .r | R |
| .jl | Julia |
Executables
| Ext | Platform |
|---|---|
| .exe | Windows PE executable |
| .msi | Windows installer |
| .dmg | macOS disk image |
| .pkg | macOS installer |
| .deb | Debian/Ubuntu package |
| .rpm | Red Hat/Fedora package |
| .apk | Android app |
| .ipa | iOS app (signed) |
| .app | macOS app bundle |
| .AppImage | Portable Linux app |
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