chore(weave): Add util to strip EXIF Metadata (and save 30-50% filesize per img)

.pre-commit-config.yaml

@@ -34,3 +34,9 @@ repos:
         files: ^examples/.*\.ipynb$
         language: system
         entry: jupyter nbconvert --ClearOutputPreprocessor.enabled=True --inplace
+      - id: strip-exif
+        name: Strip EXIF data
+        entry: python scripts/strip_exif.py
+        language: python
+        types: [image]
+        additional_dependencies: ["pillow"]

scripts/strip_exif.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+import sys
+from pathlib import Path
+
+from PIL import Image
+
+IMAGE_EXTENSIONS = {".jpg", ".jpeg", ".png", ".tiff", ".tif", ".webp"}
+
+
+def strip_exif(image_path: Path) -> bool:
+    """Strip EXIF data from an image file if present.
+
+    Args:
+        image_path: Path to the image file
+
+    Returns:
+        bool: True if successful, False if failed
+    """
+    try:
+        with Image.open(image_path) as img:
+            if not img.getexif():
+                return True
+
+            # Convert RGBA to RGB if needed (some formats don't support RGBA)
+            if img.mode == "RGBA":
+                img = img.convert("RGB")
+
+            # Create a new image without EXIF
+            data = list(img.getdata())
+            img_without_exif = Image.new(img.mode, img.size)
+            img_without_exif.putdata(data)
+            img_without_exif.save(image_path, format=img.format)
+            print(f"Stripped EXIF from: {image_path}")
+            return True
+
+    except Exception as e:
+        print(f"Error processing {image_path}: {e}", file=sys.stderr)
+        return False
+
+
+def process_path(path: Path) -> None:
+    """Process a single path, which may be a file or directory."""
+    if path.is_file():
+        if path.suffix.lower() in IMAGE_EXTENSIONS:
+            strip_exif(path)
+    elif path.is_dir():
+        found_images = False
+        for img_path in path.rglob("*"):
+            if img_path.suffix.lower() in IMAGE_EXTENSIONS:
+                found_images = True
+                strip_exif(img_path)
+        if not found_images:
+            print(f"No images found in directory: {path}")
+
+
+def main() -> None:
+    """Main function to handle CLI usage."""
+    if len(sys.argv) < 2:
+        print(
+            "Usage: strip_exif.py <file_or_directory> [file_or_directory ...]",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+    # Handle multiple paths
+    for path_str in sys.argv[1:]:
+        path = Path(path_str)
+        if not path.exists():
+            print(f"Path does not exist: {path}", file=sys.stderr)
+            continue
+        process_path(path)
+
+
+if __name__ == "__main__":
+    main()