diff --git a/shortlist.bat b/shortlist.bat
new file mode 100644
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--- /dev/null
+++ b/shortlist.bat
@@ -0,0 +1,16 @@
+@echo off
+REM Photo Judgers — Shortlist Builder (Windows)
+REM Reads output.json, asks for thresholds, copies photos to shortlist folder
+
+echo ========================================
+echo  Photo Judgers — Shortlist Builder
+echo ========================================
+echo.
+
+REM Activate conda env
+call conda activate photo_judgers
+
+echo Running shortlist builder...
+echo.
+
+python -m src.shortlist %*
diff --git a/shortlist.sh b/shortlist.sh
new file mode 100644
index 0000000..0a21482
--- /dev/null
+++ b/shortlist.sh
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+#!/bin/bash
+# Photo Judgers — Shortlist Builder (Linux/Mac)
+# Reads output.json, asks for thresholds, copies photos to shortlist folder
+
+set -e
+
+echo "========================================"
+echo " Photo Judgers — Shortlist Builder"
+echo "========================================"
+echo ""
+
+# Activate conda env
+source $(conda info --base)/etc/profile.d/conda.sh
+conda activate photo_judgers
+
+echo "Running shortlist builder..."
+echo ""
+
+python -m src.shortlist "$@"
diff --git a/src/shortlist.py b/src/shortlist.py
new file mode 100644
index 0000000..55e88a8
--- /dev/null
+++ b/src/shortlist.py
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+"""
+Photo Judgers — Shortlist Builder
+
+Reads output.json, asks for thresholds per scorer,
+copies photos that pass to a shortlist folder.
+
+Usage:
+    python -m src.shortlist
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import shutil
+import sys
+from collections import defaultdict
+from pathlib import Path
+
+# Add project root to path
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+
+# ---------------------------------------------------------------------------
+# IO Helpers
+# ---------------------------------------------------------------------------
+
+
+def load_results(output_path: str) -> list[dict]:
+    """Load results from JSON file."""
+    if not os.path.exists(output_path):
+        print(f"  ERROR: File not found: {output_path}")
+        sys.exit(1)
+    try:
+        with open(output_path, encoding="utf-8") as f:
+            data = json.load(f)
+        if not isinstance(data, list):
+            print("  ERROR: Expected a JSON array.")
+            sys.exit(1)
+        return data
+    except json.JSONDecodeError as e:
+        print(f"  ERROR: Invalid JSON: {e}")
+        sys.exit(1)
+
+
+def ask_path(prompt: str, default: str = "") -> str:
+    """Prompt user for a path."""
+    while True:
+        answer = input(f"\n  {prompt}").strip().strip('"\'')
+        if answer:
+            return answer
+        if default:
+            return default
+        print("  Path cannot be empty.")
+
+
+# ---------------------------------------------------------------------------
+# Display
+# ---------------------------------------------------------------------------
+
+
+def show_summary(results: list[dict]) -> None:
+    """Show a summary of scored photos grouped by scorer."""
+    print()
+    print("=" * 50)
+    print("  Scored Photos Summary")
+    print("=" * 50)
+    print(f"\n  Total scored: {len(results)} images\n")
+
+    # Group by scorer (subtype)
+    by_scoring: dict[str, list[dict]] = defaultdict(list)
+    for entry in results:
+        subtype = entry.get("subtype", "unknown")
+        by_scoring[subtype].append(entry)
+
+    for subtype, entries in sorted(by_scoring.items()):
+        scores = [e.get("laion_score") for e in entries if "laion_score" in e]
+        if scores:
+            avg = sum(scores) / len(scores)
+            mn = min(scores)
+            mx = max(scores)
+            print(f"  {subtype}:")
+            print(f"    Count: {len(entries)}")
+            print(f"    Score range: {mn:.2f} — {mx:.2f}")
+            print(f"    Average: {avg:.2f}")
+        else:
+            print(f"  {subtype}: {len(entries)} images (no scores)")
+        print()
+
+
+# ---------------------------------------------------------------------------
+# Thresholds
+# ---------------------------------------------------------------------------
+
+
+def ask_thresholds(results: list[dict]) -> dict[str, float]:
+    """Ask user for thresholds per scorer type."""
+    thresholds: dict[str, float] = {}
+
+    # Group by subtype
+    by_scoring: dict[str, list[dict]] = defaultdict(list)
+    for entry in results:
+        subtype = entry.get("subtype", "unknown")
+        by_scoring[subtype].append(entry)
+
+    print()
+    print("=" * 50)
+    print("  Thresholds")
+    print("=" * 50)
+    print("\n  Set thresholds for each scorer type.")
+    print("  Photos with scores ABOVE the threshold will be shortlisted.")
+    print("  Press Enter to skip a scorer (won't filter by it).\n")
+
+    for subtype in sorted(by_scoring.keys()):
+        scores = [e.get("laion_score") for e in by_scoring[subtype] if "laion_score" in e]
+        if scores:
+            avg = sum(scores) / len(scores)
+            default_val = f"{avg:.1f}"
+        else:
+            default_val = "5.0"
+
+        answer = input(f"  {subtype} threshold [default: {default_val}]: ").strip()
+        if answer:
+            try:
+                thresholds[subtype] = float(answer)
+            except ValueError:
+                print(f"    Invalid value, skipping {subtype}.")
+        else:
+            if default_val:
+                try:
+                    thresholds[subtype] = float(default_val)
+                    print(f"    Using default: {thresholds[subtype]}")
+                except ValueError:
+                    print(f"    No threshold set for {subtype}.")
+
+    return thresholds
+
+
+# ---------------------------------------------------------------------------
+# Filtering & Copying
+# ---------------------------------------------------------------------------
+
+
+def filter_photos(
+    results: list[dict], thresholds: dict[str, float]
+) -> list[dict]:
+    """Filter photos that pass all thresholds."""
+    kept: list[dict] = []
+
+    for entry in results:
+        subtype = entry.get("subtype", "unknown")
+        score = entry.get("laion_score")
+
+        # If no threshold for this subtype, keep it
+        if subtype not in thresholds:
+            kept.append(entry)
+            continue
+
+        # If no score, skip
+        if score is None:
+            continue
+
+        # Check if score meets threshold
+        if score >= thresholds[subtype]:
+            kept.append(entry)
+
+    return kept
+
+
+def copy_to_shortlist(
+    photos: list[dict], shortlist_dir: str, dry_run: bool = False
+) -> tuple[int, int]:
+    """Copy photos to shortlist directory. Returns (copied, skipped)."""
+    os.makedirs(shortlist_dir, exist_ok=True)
+
+    copied = 0
+    skipped = 0
+
+    for entry in photos:
+        filepath = entry.get("filepath")
+        filename = entry.get("filename", os.path.basename(filepath))
+
+        if not filepath or not os.path.exists(filepath):
+            print(f"    Warning: File not found: {filepath}")
+            skipped += 1
+            continue
+
+        dest = os.path.join(shortlist_dir, filename)
+
+        # Handle duplicates
+        if os.path.exists(dest):
+            base, ext = os.path.splitext(filename)
+            counter = 1
+            while os.path.exists(dest):
+                dest = os.path.join(shortlist_dir, f"{base}_{counter}{ext}")
+                counter += 1
+
+        if not dry_run:
+            shutil.copy2(filepath, dest)
+        copied += 1
+
+    return copied, skipped
+
+
+# ---------------------------------------------------------------------------
+# Main
+# ---------------------------------------------------------------------------
+
+
+def main() -> None:
+    print()
+    print("=" * 50)
+    print("  Photo Judgers — Shortlist Builder")
+    print("=" * 50)
+
+    # Load results
+    output_path = ask_path("Output JSON file [output.json]: ", "output.json")
+    results = load_results(output_path)
+
+    # Show summary
+    show_summary(results)
+
+    # Ask for thresholds
+    thresholds = ask_thresholds(results)
+
+    # Ask for shortlist destination
+    shortlist_dir = ask_path("Shortlist folder: ", "shortlist")
+
+    # Confirm
+    print()
+    print("=" * 50)
+    print("  Summary")
+    print("=" * 50)
+    print(f"  Results file: {output_path}")
+    print(f"  Total scored: {len(results)}")
+    print(f"  Shortlist folder: {shortlist_dir}")
+    print(f"  Thresholds: {thresholds}")
+    print()
+
+    confirm = input("  Continue? [y/N]: ").strip().lower()
+    if confirm not in ("y", "yes"):
+        print("  Aborted.")
+        return
+
+    # Filter
+    kept = filter_photos(results, thresholds)
+    print(f"\n  Photos passing thresholds: {len(kept)}")
+
+    if not kept:
+        print("  No photos pass the thresholds. Nothing to copy.")
+        return
+
+    # Copy
+    print(f"\n  Copying to {shortlist_dir}...")
+    copied, skipped = copy_to_shortlist(kept, shortlist_dir)
+
+    print()
+    print(f"  Copied: {copied} images")
+    if skipped:
+        print(f"  Skipped: {skipped} images")
+    print(f"  Shortlist saved to: {shortlist_dir}")
+
+
+if __name__ == "__main__":
+    main()