# DOCX Modify Existing Document

> Sub-skill of docx: Modify Existing Document (+1).

- Skill: `vamseeachanta/docx-modify-existing-document` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/docx-modify-existing-document`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/docx-modify-existing-document/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Docs & Writing
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/docx-modify-existing-document

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# Modify Existing Document (+1)

## Modify Existing Document


```python
from docx import Document

doc = Document("existing.docx")

# Replace text in paragraphs
for para in doc.paragraphs:
    if "old text" in para.text:
        for run in para.runs:
            run.text = run.text.replace("old text", "new text")

doc.save("modified.docx")
```

## Add Content to Existing Document


```python
from docx import Document

doc = Document("existing.docx")

# Add new paragraph at end
doc.add_paragraph("New paragraph added.")

# Add new section
doc.add_page_break()
doc.add_heading("New Section", level=1)
doc.add_paragraph("Content for new section.")

doc.save("modified.docx")
```