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feat: add automatic image optimization and thumbnails

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Image Processing:
- Add Pillow dependency for image manipulation
- Auto-create optimized versions on upload
- Generate main image (max 800x800, 85% quality)
- Generate thumbnail (max 400x400, 80% quality)
- Delete original after optimization

Quality Improvements:
- Auto-correct EXIF orientation (photos from phones)
- Convert RGBA/transparency to RGB with white background
- Use LANCZOS resampling for high-quality downscaling
- Optimize JPEG compression

Performance:
- Smaller file sizes = faster page loads
- Thumbnails for product listings
- Optimized full-size for detail views
- Reduced storage usage

Fallback:
- Graceful degradation if Pillow not installed
- Error handling preserves original on failure
- Logging for monitoring optimization success

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Bjoern Welker
2026-02-06 08:22:11 +01:00
parent a40b028a0e
commit fd3f49a2e1
2 changed files with 63 additions and 5 deletions
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requirements.txt
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@@ -2,3 +2,4 @@ Flask>=3.0.0
Flask-WTF>=1.2.0
Werkzeug>=3.0.0
gunicorn>=21.0.0
Pillow>=10.0.0