RTF vs DOCX — rich text versus the modern document
RTF is OS-agnostic lightweight rich text; DOCX is the official modern Word format. DOCX wins for almost every use case.
Quick verdict
- Modern documents → DOCX.
- Minimal rich text that must open anywhere → RTF.
- Reaching readers without Word → PDF is usually safer.
Side-by-side
| Aspect | RTF | DOCX |
|---|---|---|
| Owning body | Microsoft | ECMA-376 / ISO |
| Embedded images | Base64 blobs | Inside the ZIP container |
| Complex layouts | Limited | Strong |
| Macros | Not supported | Supported via docm |
| Security surface | OLE-driven exploits | Macros and template injection |
In practice
- New RTF authoring is rare in 2026; mostly used to read legacy assets.
- DOCX becomes a hard requirement when signing, change tracking, and review workflows matter.