diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4c395ab..393039f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,15 +27,18 @@ jobs:
         
     - name: Install dependencies
       run: |
-       sudo apt-get update
+        sudo apt-get update
         sudo apt-get install ffmpeg -y 
-        pip install numpy matplotlib ruff 
+
+        pip install ruff
 
     - name: Test WCONViewer
       run: |
-        ./test_all.sh
+
+        ./test_all.sh # also does pip install . and ruff check
         
       
     - name: Print info on files
       run: |
+        pip list
         ls -alt
diff --git a/.gitignore b/.gitignore
index 1410572..2d24004 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 /__pycache__
 /.DS_Store
 /examples/*.mp4
+/old
+/build
+/*.egg-info
diff --git a/README.md b/README.md
index 8785ead..0791e53 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,18 @@
 # WCONViewer
 Python based viewer for WCON files in 2D
+
+## Installation
+
+```
+pip install .
+```
+
+Saving animations with `-nogui` requires the `ffmpeg` binary to be installed on your system.
+
+## Usage
+
+```
+wconviewer -f examples/simdata.wcon
+```
+
+Run `wconviewer -h` for all options (e.g. `-nogui` to save an `.mp4` instead of showing a window).
diff --git a/app.py b/app.py
index f6ed73f..dbdba1d 100644
--- a/app.py
+++ b/app.py
@@ -3,7 +3,7 @@
 
 import streamlit as st
 
-from WormView import WormView
+from wconviewer.WormView import WormView
 
 DEFAULT_WCON = "examples/simdata.wcon"
 FRAME_DELAY = 0.1  # seconds between frames while playing
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..b36d89a
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,28 @@
+[build-system]
+requires = ["setuptools>=61"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "WCONViewer"
+version = "0.1.0"
+description = "Viewer for WCON (Worm tracker Commons Object Notation) files in 2D"
+readme = "README.md"
+license = { file = "LICENSE" }
+requires-python = ">=3.10"
+dependencies = ["numpy", "matplotlib"]
+
+[project.optional-dependencies]
+dev = ["ruff"]
+
+[project.scripts]
+wconviewer = "wconviewer.WormView:main"
+
+[tool.setuptools]
+packages = ["wconviewer"]
+
+[tool.ruff]
+target-version = "py310"
+line-length = 88
+
+[tool.ruff.lint]
+select = ["E4", "E7", "E9", "F"]
diff --git a/test_all.sh b/test_all.sh
index 831f82f..751bef4 100755
--- a/test_all.sh
+++ b/test_all.sh
@@ -1,11 +1,13 @@
 #!/bin/bash
 set -ex
 
-ruff format *.py
-ruff check *.py
+ruff format wconviewer app.py
+ruff check wconviewer app.py
 
-python WormView.py -f examples/simdata.wcon -nogui -z # Test reloading WCON in Player
-python WormView.py -f examples/worm_motion_log.wcon -nogui -g
-python WormView.py -f examples/output_W2D.wcon -nogui -g -z
+pip install .
 
-#python WormView.py -f examples/N2\ on\ food\ L_2009_09_15__11_01_01___8___1.wcon.zip -nogui
+wconviewer -f examples/simdata.wcon -nogui -z # Test reloading WCON in Player
+wconviewer -f examples/worm_motion_log.wcon -nogui -g
+wconviewer -f examples/output_W2D.wcon -nogui -g -z
+
+#wconviewer -f examples/N2\ on\ food\ L_2009_09_15__11_01_01___8___1.wcon.zip -nogui
diff --git a/Player.py b/wconviewer/Player.py
similarity index 100%
rename from Player.py
rename to wconviewer/Player.py
diff --git a/SimpleWCON.py b/wconviewer/SimpleWCON.py
similarity index 100%
rename from SimpleWCON.py
rename to wconviewer/SimpleWCON.py
diff --git a/WormView.py b/wconviewer/WormView.py
similarity index 99%
rename from WormView.py
rename to wconviewer/WormView.py
index 3c67d37..641a0f5 100644
--- a/WormView.py
+++ b/wconviewer/WormView.py
@@ -5,8 +5,8 @@
 import os
 import argparse
 import sys
-from Player import Player
-from SimpleWCON import SimpleWCON
+from .Player import Player
+from .SimpleWCON import SimpleWCON
 
 
 class HalfIntegerLocator(MultipleLocator):
@@ -277,7 +277,7 @@ def parse_args():
         "--wcon_file",
         type=validate_file,
         help="WCON file path",
-        default="examples/simdata.wcon",
+        required=True,
     )
     parser.add_argument(
         "-nogui", action="store_true", help="Just load file, don't show GUI"
diff --git a/wconviewer/__init__.py b/wconviewer/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/wconviewer/__main__.py b/wconviewer/__main__.py
new file mode 100644
index 0000000..c1179f5
--- /dev/null
+++ b/wconviewer/__main__.py
@@ -0,0 +1,5 @@
+import sys
+
+from .WormView import main
+
+sys.exit(main())