Web Performance Optimization

  1. Asset Optimization
    1. Image Optimization
      1. Image Format Selection
        1. JPEG Characteristics
          1. PNG Use Cases
            1. WebP Benefits
              1. AVIF Advantages
                1. SVG Optimization
                  1. Format Comparison Matrix
                  2. Image Compression Techniques
                    1. Lossy Compression
                      1. Lossless Compression
                        1. Quality vs Size Trade-offs
                          1. Compression Tools and Settings
                          2. Responsive Images
                            1. Device Pixel Ratio Considerations
                              1. Viewport-Based Selection
                                1. Art Direction Use Cases
                                  1. srcset Attribute Usage
                                    1. sizes Attribute Configuration
                                      1. Picture Element Implementation
                                      2. Advanced Image Techniques
                                        1. Lazy Loading Implementation
                                          1. Progressive JPEG
                                            1. Image Dimension Specification
                                              1. Placeholder Strategies
                                              2. Image Delivery Optimization
                                                1. Image CDN Usage
                                                  1. Automatic Format Selection
                                                    1. Real-Time Image Processing
                                                  2. Font Optimization
                                                    1. Web Font Formats
                                                      1. WOFF Characteristics
                                                        1. WOFF2 Compression
                                                          1. Format Fallback Strategies
                                                          2. Font Loading Strategies
                                                            1. font-display Property
                                                              1. Swap Behavior
                                                                1. Block Behavior
                                                                  1. Fallback Behavior
                                                                    1. Optional Behavior
                                                                    2. Preloading Fonts
                                                                      1. Asynchronous Font Loading
                                                                        1. Font Loading API
                                                                        2. Font Optimization Techniques
                                                                          1. Font Subsetting
                                                                            1. Glyph Removal
                                                                              1. Unicode Range Specification
                                                                                1. Variable Fonts
                                                                                2. Font Loading Issues
                                                                                  1. Flash of Invisible Text (FOIT)
                                                                                    1. Flash of Unstyled Text (FOUT)
                                                                                      1. Layout Shift Prevention
                                                                                      2. Font Performance Best Practices
                                                                                        1. System Font Stacks
                                                                                          1. Font Pairing Optimization
                                                                                            1. Fallback Font Matching
                                                                                          2. JavaScript Optimization
                                                                                            1. Code Size Reduction
                                                                                              1. Minification Techniques
                                                                                                1. Dead Code Elimination
                                                                                                  1. Tree Shaking Implementation
                                                                                                    1. Unused Code Detection
                                                                                                    2. Compression Strategies
                                                                                                      1. Gzip Compression
                                                                                                        1. Brotli Compression
                                                                                                          1. Compression Ratio Analysis
                                                                                                          2. Code Splitting Techniques
                                                                                                            1. Dynamic Imports
                                                                                                              1. Route-Based Splitting
                                                                                                                1. Component-Based Splitting
                                                                                                                  1. Vendor Bundle Separation
                                                                                                                  2. Loading Strategies
                                                                                                                    1. Synchronous vs Asynchronous Loading
                                                                                                                      1. async Attribute Usage
                                                                                                                        1. defer Attribute Usage
                                                                                                                          1. Module Loading
                                                                                                                          2. Execution Optimization
                                                                                                                            1. Reducing Long Tasks
                                                                                                                              1. Main Thread Management
                                                                                                                                1. Memoization Techniques
                                                                                                                                  1. Avoiding Forced Synchronous Layout
                                                                                                                                    1. Event Handling Optimization
                                                                                                                                      1. Debouncing and Throttling
                                                                                                                                      2. Modern JavaScript Considerations
                                                                                                                                        1. ES Module Usage
                                                                                                                                          1. Polyfill Optimization
                                                                                                                                            1. Transpilation Trade-offs
                                                                                                                                          2. CSS Optimization
                                                                                                                                            1. CSS Size Reduction
                                                                                                                                              1. Minification Process
                                                                                                                                                1. Shorthand Property Usage
                                                                                                                                                  1. Duplicate Rule Removal
                                                                                                                                                  2. CSS Delivery Optimization
                                                                                                                                                    1. Critical CSS Extraction
                                                                                                                                                      1. Above-the-Fold CSS Inlining
                                                                                                                                                        1. Non-Critical CSS Async Loading
                                                                                                                                                        2. CSS Performance Techniques
                                                                                                                                                          1. Unused CSS Removal
                                                                                                                                                            1. CSS Purging Tools
                                                                                                                                                              1. Selector Optimization
                                                                                                                                                                1. Specificity Management
                                                                                                                                                                2. CSS Architecture
                                                                                                                                                                  1. Modular CSS Approaches
                                                                                                                                                                    1. CSS-in-JS Considerations
                                                                                                                                                                      1. Atomic CSS Benefits
                                                                                                                                                                      2. Advanced CSS Optimization
                                                                                                                                                                        1. CSS Containment
                                                                                                                                                                          1. will-change Property
                                                                                                                                                                            1. Transform and Opacity Animations
                                                                                                                                                                          2. Video and Media Optimization
                                                                                                                                                                            1. Video Format Selection
                                                                                                                                                                              1. MP4 Compatibility
                                                                                                                                                                                1. WebM Efficiency
                                                                                                                                                                                  1. AV1 Future-Proofing
                                                                                                                                                                                  2. Video Compression
                                                                                                                                                                                    1. Bitrate Optimization
                                                                                                                                                                                      1. Resolution Considerations
                                                                                                                                                                                        1. Frame Rate Impact
                                                                                                                                                                                        2. Video Delivery Methods
                                                                                                                                                                                          1. Progressive Download
                                                                                                                                                                                            1. Adaptive Bitrate Streaming
                                                                                                                                                                                              1. Video Streaming Protocols
                                                                                                                                                                                              2. Video Performance Techniques
                                                                                                                                                                                                1. Lazy Loading Videos
                                                                                                                                                                                                  1. Poster Image Optimization
                                                                                                                                                                                                    1. Preload Strategies
                                                                                                                                                                                                      1. Video CDN Usage
                                                                                                                                                                                                      2. Audio Optimization
                                                                                                                                                                                                        1. Audio Format Selection
                                                                                                                                                                                                          1. Compression Techniques
                                                                                                                                                                                                            1. Streaming Considerations

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                                                                                                                                                                                                        6. Caching Strategies