DOCX vs TXT
A detailed comparison of Word Document and Plain Text — file size, quality, compatibility, and which format to choose for your workflow.
Word Document
Documents & TextDOCX is the modern Microsoft Word format based on Open XML. It is the most widely used word processing format in business and education, supporting rich text, images, tables, and macros.
About DOCX filesPlain Text
Documents & TextTXT files contain unformatted plain text with no styling, images, or layout information. They are universally readable by any device and operating system, making them the simplest document format.
About TXT filesStrengths Comparison
DOCX Strengths
- Much smaller than the legacy .doc format thanks to ZIP compression.
- Human-readable XML inside — automated extraction and manipulation is straightforward.
- Preserves formatting, images, tables, footnotes, comments, and track changes.
- Supported natively by Word, LibreOffice, Pages, Google Docs, and most modern editors.
- ISO/IEC 29500 standardized — not locked to a single vendor.
TXT Strengths
- Universally readable — every operating system, every editor, every programming language.
- Zero metadata overhead: the file size equals the character count (for ASCII).
- Safe to diff, grep, version-control, and pipe through command-line tools.
- Immune to format obsolescence: a text file from 1970 still opens today.
- Tiny footprint for structured data like logs or configuration.
Limitations
DOCX Limitations
- Subtle formatting drifts when opened in non-Microsoft editors (fonts, line spacing, tab stops).
- Macros and embedded scripts make older .docm variants a common malware vector.
- Complex layouts with floating objects often reflow unpredictably.
- Version compatibility matters — Word 2007 cannot open some Word 2019 features cleanly.
TXT Limitations
- No styling, images, or embedded structure — just characters.
- Character encoding ambiguity (ISO-8859-1 vs UTF-8 vs Windows-1252) causes "mojibake".
- Line-ending differences between OSes still cause subtle bugs today.
- No way to carry hyperlinks, tables, or formatting without a convention on top (like Markdown).
Technical Specifications
| Specification | DOCX | TXT |
|---|---|---|
| MIME type | application/vnd.openxmlformats-officedocument.wordprocessingml.document | text/plain |
| Container | ZIP archive (Office Open XML) | — |
| Standard | ISO/IEC 29500, ECMA-376 | — |
| Released in | Microsoft Office 2007 | — |
| Legacy predecessor | .doc (binary, OLE Compound File) | — |
| Common encodings | — | UTF-8, UTF-16, ASCII, ISO-8859-1, Windows-1252 |
| Line endings | — | LF (Unix), CRLF (Windows), CR (classic Mac) |
| Max file size | — | Limited only by filesystem (no format-level limit) |
| Structure | — | None — flat sequence of characters |
Typical File Sizes
DOCX
- Short letter (1 page) 15–30 KB
- Academic paper (20 pages, no images) 80–200 KB
- Report with several images (30 pages) 1–5 MB
- Dissertation with figures (200 pages) 10–30 MB
TXT
- Short note < 1 KB
- README file 2–20 KB
- Full novel (~90,000 words) 500 KB – 1 MB
- Server log file (daily) 10 MB – 1 GB
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Frequently Asked Questions
DOCX is the default document format for Microsoft Word since 2007, based on the Office Open XML standard. It stores text, formatting, images, tables, and macros in a compressed XML-based package.
DOCX is the default document formato para Microsoft Word since 2007, based no Office abrir XML padrão. It stores text, formatoting, images, tables, e macros em um comprimido XML-based package.
DOCX files open in Microsoft Word, Google Docs (free), LibreOffice Writer (free), and Apple Pages. You can also view them in web browsers using OneDrive or Google Drive.
DOCX arquivos abrir in Microsoft Word, Google Docs (free), LibreOffice Writer (free), e Apple Pages. You can also view them in web browsers usando OneDrive ou Google Drive.
Use DOCX when the document will be edited by others or needs collaborative review. Use PDF when you want to lock the layout and ensure the document looks identical on every device and printer.
Use DOCX when the document will be edited by others ou needs collaborative review. usar PDF when you querer lock the layout e ensure the document looks identical on every device e printer.