# Build Size Reduction

## Phase 1: Quick Wins (build scripts)

- [x] Strip unused NumPy submodules (polynomial, linalg, ma, lib, distutils)
- [x] Strip debug symbols from .pyd/.dll/.so files
- [x] Remove zeroconf service database
- [x] Remove .py source from site-packages after compiling to .pyc
- [x] Strip unused PIL image plugins (keep JPEG/PNG/ICO/BMP for tray)

## Phase 2: Replace Pillow with cv2

- [x] Create `utils/image_codec.py` with cv2-based image helpers
- [x] Replace PIL in `_preview_helpers.py`
- [x] Replace PIL in `picture_sources.py`
- [x] Replace PIL in `color_strip_sources.py`
- [x] Replace PIL in `templates.py`
- [x] Replace PIL in `postprocessing.py`
- [x] Replace PIL in `output_targets_keycolors.py`
- [x] Replace PIL in `kc_target_processor.py`
- [x] Replace PIL in `pixelate.py` filter
- [x] Replace PIL in `downscaler.py` filter
- [x] Replace PIL in `scrcpy_engine.py`
- [x] Replace PIL in `live_stream_manager.py`
- [x] Move Pillow from core deps to [tray] optional in pyproject.toml
- [x] Make PIL import conditional in `tray.py`
- [x] Move opencv-python-headless to core dependencies

## Phase 4: OpenCV stripping (build scripts)

- [x] Strip ffmpeg DLL, Haar cascades, dev files (already existed)
- [x] Strip typing stubs (already existed)

## Verification

- [x] Lint: `ruff check src/ tests/ --fix`
- [x] Tests: 341 passed