Image Processing Sharp (Node.js — recommended) Express Upload Pipeline Cloudinary (managed service) Python (Pillow) Responsive Images (HTML) Anti-Patterns | Anti-Pattern | Fix | |--------------|-----| | Processing in request handler | Process in background job queue | | Storing only original size | Generate multiple sizes on upload | | No format conversion | Convert to WebP/AVIF for smaller size | | No file size validation | Validate before processing | | Serving images from app server | Use CDN or cloud storage | Production Checklist - [ ] Image processing in background queue - [ ] Multiple…