TXT file format: what it is and how to use it

Plain text is the format beneath all formats: unstyled characters that every tool since the teletype can read. Learn when to use it and what to choose instead.

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What is a TXT file?

A .txt file is plain text: characters without formatting, structure or metadata, the lowest layer of digital writing since the teletype. No fonts, no styles, no markup, just Unicode (hopefully UTF-8) bytes with line breaks. It is the format every tool can read, every OS can write, and every other format ultimately descends from.

When should you use TXT?

  • Notes and logs: information that must survive forever and open anywhere.
  • Configuration seeds: .env files, wordlists, manifests.
  • Data you want future-proof: nothing to break, nothing to obsolete.

When is another format a better fit?

For styled documents use DOCX or RTF; for structured writing Markdown-flavored text; for data CSV or JSON, since .txt carries no structure beyond lines. Its power is its poverty.

The short version: TXT is the bedrock format: zero features, infinite compatibility.

How to open a TXT file

On Windows

Double-click the file, or open it with Notepad.

On macOS

Any text editor opens TXT files on macOS.

In your browser

Open TXT files right in a browser tab or with the dexrr viewer. No install, no upload.

Also opens in

  • Any text editor
  • Notepad
  • VS Code

View or convert TXT files

A quick preview or a new format. No install, no upload.

View TXT files Preview and inspect TXT files Convert to TXT Turn files into TXT TXT to CSV Comma-Separated Values TXT to RTF Rich Text Format TXT to HTML HyperText Markup Language

TXT technical details

Full name
Plain text
Extensions
.txt .text
MIME type
text/plain
Compression
None (uncompressed)

TXT questions, answered

How do I open a .txt file?

Every editor on Earth: Notepad, TextEdit, VS Code, browsers. dexrr displays and converts txt files directly in your browser.

Can I convert TXT files online?

Yes, dexrr converts txt locally in your browser: TXT to PDF for printing or TXT to DOCX for documents.

Is TXT better than DOCX?

For longevity and compatibility, unbeatable, it will open in 50 years on any machine. For anything beyond plain words, DOCX is the real tool.

Why does my .txt show garbled characters?

Encoding mismatch: the file is not in the encoding your viewer assumed (usually UTF-8 vs. a legacy codepage). Reopen with the right encoding.

Is the TXT format outdated?

It cannot be outdated, it is the substrate every other text format is built on.