diff --git a/xlsx/scripts/office/unpack.py b/xlsx/scripts/office/unpack.py
new file mode 100644
index 0000000..0015253
--- /dev/null
+++ b/xlsx/scripts/office/unpack.py
@@ -0,0 +1,132 @@
+"""Unpack Office files (DOCX, PPTX, XLSX) for editing.
+
+Extracts the ZIP archive, pretty-prints XML files, and optionally:
+- Merges adjacent runs with identical formatting (DOCX only)
+- Simplifies adjacent tracked changes from same author (DOCX only)
+
+Usage:
+    python unpack.py <office_file> <output_dir> [options]
+
+Examples:
+    python unpack.py document.docx unpacked/
+    python unpack.py presentation.pptx unpacked/
+    python unpack.py document.docx unpacked/ --merge-runs false
+"""
+
+import argparse
+import sys
+import zipfile
+from pathlib import Path
+
+import defusedxml.minidom
+
+from helpers.merge_runs import merge_runs as do_merge_runs
+from helpers.simplify_redlines import simplify_redlines as do_simplify_redlines
+
+SMART_QUOTE_REPLACEMENTS = {
+    "\u201c": "&#x201C;",  
+    "\u201d": "&#x201D;",  
+    "\u2018": "&#x2018;",  
+    "\u2019": "&#x2019;",  
+}
+
+
+def unpack(
+    input_file: str,
+    output_directory: str,
+    merge_runs: bool = True,
+    simplify_redlines: bool = True,
+) -> tuple[None, str]:
+    input_path = Path(input_file)
+    output_path = Path(output_directory)
+    suffix = input_path.suffix.lower()
+
+    if not input_path.exists():
+        return None, f"Error: {input_file} does not exist"
+
+    if suffix not in {".docx", ".pptx", ".xlsx"}:
+        return None, f"Error: {input_file} must be a .docx, .pptx, or .xlsx file"
+
+    try:
+        output_path.mkdir(parents=True, exist_ok=True)
+
+        with zipfile.ZipFile(input_path, "r") as zf:
+            zf.extractall(output_path)
+
+        xml_files = list(output_path.rglob("*.xml")) + list(output_path.rglob("*.rels"))
+        for xml_file in xml_files:
+            _pretty_print_xml(xml_file)
+
+        message = f"Unpacked {input_file} ({len(xml_files)} XML files)"
+
+        if suffix == ".docx":
+            if simplify_redlines:
+                simplify_count, _ = do_simplify_redlines(str(output_path))
+                message += f", simplified {simplify_count} tracked changes"
+
+            if merge_runs:
+                merge_count, _ = do_merge_runs(str(output_path))
+                message += f", merged {merge_count} runs"
+
+        for xml_file in xml_files:
+            _escape_smart_quotes(xml_file)
+
+        return None, message
+
+    except zipfile.BadZipFile:
+        return None, f"Error: {input_file} is not a valid Office file"
+    except Exception as e:
+        return None, f"Error unpacking: {e}"
+
+
+def _pretty_print_xml(xml_file: Path) -> None:
+    try:
+        content = xml_file.read_text(encoding="utf-8")
+        dom = defusedxml.minidom.parseString(content)
+        xml_file.write_bytes(dom.toprettyxml(indent="  ", encoding="utf-8"))
+    except Exception:
+        pass  
+
+
+def _escape_smart_quotes(xml_file: Path) -> None:
+    try:
+        content = xml_file.read_text(encoding="utf-8")
+        for char, entity in SMART_QUOTE_REPLACEMENTS.items():
+            content = content.replace(char, entity)
+        xml_file.write_text(content, encoding="utf-8")
+    except Exception:
+        pass
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="Unpack an Office file (DOCX, PPTX, XLSX) for editing"
+    )
+    parser.add_argument("input_file", help="Office file to unpack")
+    parser.add_argument("output_directory", help="Output directory")
+    parser.add_argument(
+        "--merge-runs",
+        type=lambda x: x.lower() == "true",
+        default=True,
+        metavar="true|false",
+        help="Merge adjacent runs with identical formatting (DOCX only, default: true)",
+    )
+    parser.add_argument(
+        "--simplify-redlines",
+        type=lambda x: x.lower() == "true",
+        default=True,
+        metavar="true|false",
+        help="Merge adjacent tracked changes from same author (DOCX only, default: true)",
+    )
+    args = parser.parse_args()
+
+    _, message = unpack(
+        args.input_file,
+        args.output_directory,
+        merge_runs=args.merge_runs,
+        simplify_redlines=args.simplify_redlines,
+    )
+    print(message)
+
+    if "Error" in message:
+        sys.exit(1)