A file extension is a suffix of three or four letters added to the end of a filename after a period. It serves as a directive that tells your operating system which application to use to open and read the file’s internal data structure correctly.
The most common file extensions are categorized by their specific media and data types below: 📄 Documents and Text .docx: Standard Microsoft Word Open XML document.
.pdf: Adobe Portable Document Format, designed to maintain formatting across any device.
.txt: Plain unformatted text file, easily read by basic programs like Notepad.
.rtf: Rich Text Format, allowing basic text layouts, fonts, and bolding.
.md: Markdown documentation file, using lightweight plain-text formatting syntax. 📊 Data and Spreadsheets
.xlsx: Microsoft Excel spreadsheet containing structured rows, columns, and computational formulas.
.csv: Comma-Separated Values, a universal plain-text table format used to easily migrate data between databases.
.xml: Extensible Markup Language, a format defining rules for encoding documents in a way that is readable by both humans and machines.
.json: JavaScript Object Notation, a lightweight data-interchange format heavily relied upon in web development. 🖼️ Images and Graphics
What is a File Extension? | Types of File Extensions? – Lenovo
Leave a Reply