*📂 50 File Extensions (Complete List)* 1 .txt – Plain Text File 2 .docx – Microsoft Word Open XML Document 3 .doc – Microsoft Word Document 4 .pdf – Portable Document Format 5 .odt – OpenDocument Text Document 6 .xls – Microsoft Excel Spreadsheet 7 .xlsx – Microsoft Excel Open XML Spreadsheet 8 .html – HyperText Markup Language File 9 .js – JavaScript File 10 .py – Python Script 11 .c – C Source Code 12 .json – JavaScript Object Notation File 13 .exe – Windows Executable File 14 .jpg – JPEG Ima