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.serena/memories/thumbnail_quality_improvements.md

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+# Thumbnail Quality Improvements Completed
+
+## Problem Identified:
+- SoundCloud thumbnails were displaying in low resolution (100x100px with "-large" suffix)
+- Poor visual quality affecting user experience
+
+## Solution Implemented:
+
+### 1. **Enhanced Thumbnail Resolution Function**
+Added `getHighQualityThumbnail()` method in `src/soundcloud.ts`:
+- Automatically upgrades `-large` (100x100) to `-t500x500` (500x500)  
+- Upgrades `-crop` (400x400) to `-t500x500`
+- Upgrades `-t300x300` to `-t500x500`
+- Custom high-quality placeholder for default avatars
+- Fallback handling for various URL formats
+
+### 2. **CSS Image Rendering Optimization**
+Updated `public/style.css`:
+- Added `image-rendering: optimizeQuality` for crisp thumbnail display
+- Applied to both desktop and mobile thumbnail styles
+- Maintains responsive design while improving visual quality
+
+### 3. **Automatic Quality Detection**
+The system now:
+- Detects SoundCloud thumbnail URL patterns
+- Automatically requests highest available resolution
+- Gracefully handles missing high-res versions
+- Provides quality placeholders when needed
+
+## Technical Details:
+- **Resolution upgrade**: 100x100 → 500x500 (25x more pixels)
+- **Browser optimization**: Enhanced image rendering properties
+- **Fallback safety**: Original URLs preserved if upgrade fails
+- **Performance**: No additional API calls, just URL manipulation
+
+## Results:
+- Much sharper, clearer thumbnail images
+- Better visual consistency across different track types
+- Improved user experience without performance impact
+- Maintains compatibility with all existing functionality