File Extensions
Computers · फाइल एक्सटेंशन
📋Quick Overview
File extensions identify the type and format of a file. They appear after the dot in a filename (e.g., report.pdf). Different applications use different extensions. Knowing common extensions is essential for computer literacy exams.
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.pdf = Portable Document Format (by Adobe); .html = HyperText Markup Language (web pages)
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.exe = Executable file (runs programs in Windows); .apk = Android Package (Android apps)
📖File Extensions — Key Table
| Extension | Category | Application |
|---|---|---|
| .docx | Document | MS Word |
| .xlsx | Spreadsheet | MS Excel |
| .pptx | Presentation | MS PowerPoint |
| Document | Adobe Acrobat | |
| .jpg/.png | Image | Photos, graphics |
| .mp3 | Audio | Music files |
| .mp4 | Video | Video files |
| .html | Web page | Web browsers |
| .exe | Executable | Windows programs |
| .zip/.rar | Compressed | WinZip, WinRAR |
| .csv | Data | Comma Separated Values |
| .txt | Text | Notepad |
📝Important Points
- •.gif = Graphics Interchange Format (supports animation)
- •.svg = Scalable Vector Graphics (doesn't pixelate when resized)
- •.dbf = Database file; .sql = SQL database file
- •.py = Python; .java = Java; .cpp = C++ — programming files