diff --git a/README.md b/README.md
index 6ce4f36..776302f 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,18 @@ Run the optimizer plus baselines:
 repixelize compare input.png --out output.png --diagnostics-dir diagnostics
 ```
 
+Run the GUI from the repo checkout:
+
+```powershell
+.\scripts\run_gui.ps1
+```
+
+If you want to bypass the PowerShell wrapper and call Python directly:
+
+```powershell
+.\.venv\Scripts\python scripts\run_gui.py
+```
+
 ## Corpus And Benchmarks
 
 Prepare a local Creative Commons corpus:
diff --git a/scripts/run_gui.ps1 b/scripts/run_gui.ps1
new file mode 100644
index 0000000..118676b
--- /dev/null
+++ b/scripts/run_gui.ps1
@@ -0,0 +1,25 @@
+param(
+    [string]$BindHost = "127.0.0.1",
+    [int]$Port = 8000,
+    [switch]$Reload
+)
+
+$ErrorActionPreference = "Stop"
+
+$repoRoot = Split-Path -Parent $PSScriptRoot
+$python = Join-Path $repoRoot ".venv\Scripts\python.exe"
+if (-not (Test-Path $python)) {
+    $python = "python"
+}
+
+$args = @(
+    (Join-Path $repoRoot "scripts\run_gui.py"),
+    "--host", $BindHost,
+    "--port", $Port
+)
+
+if ($Reload) {
+    $args += "--reload"
+}
+
+& $python @args
diff --git a/scripts/run_gui.py b/scripts/run_gui.py
new file mode 100644
index 0000000..2749188
--- /dev/null
+++ b/scripts/run_gui.py
@@ -0,0 +1,36 @@
+from __future__ import annotations
+
+import argparse
+import sys
+from pathlib import Path
+
+
+def _repo_root() -> Path:
+    return Path(__file__).resolve().parents[1]
+
+
+def _ensure_src_on_path() -> None:
+    src = _repo_root() / "src"
+    src_text = str(src)
+    if src_text not in sys.path:
+        sys.path.insert(0, src_text)
+
+
+def build_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser(description="Launch the Repixelizer GUI from the repo checkout.")
+    parser.add_argument("--host", default="127.0.0.1", help="Host interface to bind")
+    parser.add_argument("--port", type=int, default=8000, help="Port to bind")
+    parser.add_argument("--reload", action="store_true", help="Enable autoreload while developing the GUI server")
+    return parser
+
+
+def main(argv: list[str] | None = None) -> int:
+    _ensure_src_on_path()
+    from repixelizer.gui import main as gui_main
+
+    args = build_parser().parse_args(argv)
+    return gui_main(host=args.host, port=args.port, reload=args.reload)
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/tests/test_gui.py b/tests/test_gui.py
index e82ac3b..066b6dc 100644
--- a/tests/test_gui.py
+++ b/tests/test_gui.py
@@ -1,5 +1,8 @@
 from __future__ import annotations
 
+import importlib.util
+from pathlib import Path
+
 from repixelizer.pipeline import run_pipeline_rgba
 from repixelizer.synthetic import fake_pixelize, make_emblem
 
@@ -35,3 +38,26 @@ def test_run_pipeline_rgba_emits_observer_events_for_gui() -> None:
     assert "phase_field_initial" in events
     assert events.count("phase_field_step") == 2
     assert events[-3:] == ["cleanup_completed", "palette_completed", "pipeline_completed"]
+
+
+def test_repo_gui_runner_dispatches_to_gui_main(monkeypatch) -> None:
+    repo_root = Path(__file__).resolve().parents[1]
+    script_path = repo_root / "scripts" / "run_gui.py"
+    spec = importlib.util.spec_from_file_location("repixelizer_run_gui_script", script_path)
+    assert spec is not None
+    assert spec.loader is not None
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+
+    called = {}
+
+    def fake_gui_main(*, host: str, port: int, reload: bool) -> int:
+        called["host"] = host
+        called["port"] = port
+        called["reload"] = reload
+        return 0
+
+    monkeypatch.setattr("repixelizer.gui.main", fake_gui_main)
+    exit_code = module.main(["--host", "127.0.0.1", "--port", "8123", "--reload"])
+    assert exit_code == 0
+    assert called == {"host": "127.0.0.1", "port": 8123, "reload": True}