TXT File

What is a TXT file?

A TXT file is a plain text document that contains readable characters without rich formatting like fonts, colors, or embedded images. Because it is simple and universal, it opens on nearly any device and is commonly used for notes, data snippets, and configuration text.

Common uses

• Notes, drafts, and quick writing
• Copy/paste snippets (code, commands, logs)
• Readme files and documentation
• App settings and configuration (sometimes)
• Storing simple lists (names, URLs, tasks)

How to open a TXT file

• Windows: Notepad, Notepad++, VS Code
• macOS: TextEdit, VS Code
• Mobile: Notes apps or text editors
• Online: Open in a browser or cloud editor

Common problems

• Wrong character encoding (symbols or gibberish)
• Line endings differ (Windows vs Mac/Linux)
• File is huge (slow to open in basic editors)
• Not actually plain text (misnamed extension)
• Accidentally saved with a different extension

History

Plain text files have existed since the earliest days of computing. The .txt extension became a common convention on systems like DOS and Windows to indicate “this is text.” Even today, plain text remains a core format because it’s lightweight, portable, and easy for humans and programs to read.