diff --git a/README.md b/README.md
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+# Print Every Page (Local Auto-Printer)
+
+This program watches a folder on your laptop and automatically prints each new supported file it sees.
+
+## What it prints
+- `.pdf`
+- `.txt`
+- `.png`
+- `.jpg`
+- `.jpeg`
+
+## Usage
+
+```bash
+python3 print_every_page.py ~/to-print
+```
+
+Optional flags:
+
+```bash
+python3 print_every_page.py ~/to-print --interval 1.0 --dry-run
+```
+
+- `--interval`: how often to check the folder.
+- `--dry-run`: preview only (no actual printing).
+
+## Notes
+- Linux/macOS: uses `lp`.
+- Windows: uses PowerShell `Start-Process ... -Verb Print`.
+- Ensure your default printer is configured before running.
diff --git a/print_every_page.py b/print_every_page.py
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+#!/usr/bin/env python3
+"""Automatically print every supported file from a chosen folder.
+
+This script watches a folder and sends each new file to the default printer.
+It is intended for local, opt-in automation only.
+"""
+
+from __future__ import annotations
+
+import argparse
+import platform
+import subprocess
+import time
+from pathlib import Path
+
+SUPPORTED_EXTENSIONS = {".pdf", ".txt", ".png", ".jpg", ".jpeg"}
+
+
+def print_file(file_path: Path, dry_run: bool = False) -> None:
+    """Send one file to the default system printer."""
+    system = platform.system().lower()
+
+    if dry_run:
+        print(f"[dry-run] Would print: {file_path}")
+        return
+
+    if system == "windows":
+        # Uses the file association print action on Windows.
+        cmd = ["powershell", "-Command", f"Start-Process -FilePath '{file_path}' -Verb Print"]
+    elif system == "darwin":
+        # macOS printing via CUPS.
+        cmd = ["lp", str(file_path)]
+    else:
+        # Linux and most Unix-like systems with CUPS installed.
+        cmd = ["lp", str(file_path)]
+
+    subprocess.run(cmd, check=True)
+    print(f"Printed: {file_path}")
+
+
+def watch_and_print(folder: Path, interval_seconds: float, dry_run: bool = False) -> None:
+    """Continuously watch a folder and print new supported files."""
+    printed: set[Path] = set()
+
+    if not folder.exists() or not folder.is_dir():
+        raise ValueError(f"Folder does not exist or is not a directory: {folder}")
+
+    print(f"Watching: {folder}")
+    print(f"Supported types: {', '.join(sorted(SUPPORTED_EXTENSIONS))}")
+    print("Press Ctrl+C to stop.\n")
+
+    while True:
+        for file_path in sorted(folder.iterdir()):
+            if not file_path.is_file():
+                continue
+            if file_path.suffix.lower() not in SUPPORTED_EXTENSIONS:
+                continue
+            if file_path in printed:
+                continue
+
+            try:
+                print_file(file_path, dry_run=dry_run)
+                printed.add(file_path)
+            except subprocess.CalledProcessError as exc:
+                print(f"Failed to print {file_path}: {exc}")
+
+        time.sleep(interval_seconds)
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        description="Watch a folder and print every new page/file using your default printer."
+    )
+    parser.add_argument(
+        "folder",
+        nargs="?",
+        default=".",
+        help="Folder to watch for files (default: current directory).",
+    )
+    parser.add_argument(
+        "--interval",
+        type=float,
+        default=2.0,
+        help="Polling interval in seconds (default: 2.0).",
+    )
+    parser.add_argument(
+        "--dry-run",
+        action="store_true",
+        help="Show which files would be printed without sending print jobs.",
+    )
+    return parser.parse_args()
+
+
+def main() -> None:
+    args = parse_args()
+    watch_and_print(Path(args.folder).expanduser().resolve(), args.interval, args.dry_run)
+
+
+if __name__ == "__main__":
+    main()