Performance Suggestions
CodeNull’s Performance Suggestions tool helps you identify and fix performance issues that affect both user experience and search engine rankings.Overview
- Page loading speed
- Core Web Vitals metrics
- Mobile performance
- Resource optimization
- Server response times
- Technical performance factors
Key Features
Core Web Vitals Analysis
Measure and optimize Google’s key performance metrics
Performance Scoring
Get an overall performance score with detailed breakdown
Asset Optimization
Identify and fix oversized images and media files
Code Efficiency
Find opportunities to optimize JavaScript and CSS
Server Response Analysis
Analyze and improve backend response times
Mobile Performance
Ensure fast loading on mobile devices and networks
Why Website Performance Matters
SEO Impact
SEO Impact
Website performance directly affects search engine rankings:
- Core Web Vitals are official Google ranking factors
- Faster sites generally rank higher in search results
- Mobile page speed is especially important for rankings
- Bounce rate improvements from faster loading affect SEO
User Experience
User Experience
Performance dramatically impacts how users interact with your site:
- 53% of mobile users abandon sites that take longer than 3 seconds to load
- Every 1-second delay in page load time can reduce conversions by 7%
- Fast-loading sites have lower bounce rates
- Users expect increasingly faster web experiences
Conversion Rates
Conversion Rates
Site speed directly affects your bottom line:
- Amazon found that a 100ms delay costs 1% in sales
- Walmart saw a 2% increase in conversions for every 1 second of improvement
- Mobile conversions drop by 20% for every additional second of load time
- Slow checkouts lead to abandoned carts
Using the Performance Suggestions Tool
1
Run a Performance Audit
From the Frontend Dashboard, navigate to “Performance Suggestions” and click “Run Performance Audit” to analyze your website.
2
Review the Performance Score
Examine your overall performance score and the breakdown of different factors affecting it.
3
Address Critical Issues
Focus first on critical issues that have the largest impact on your performance score.
4
Implement Recommended Fixes
Apply the suggestions provided, from simple image optimization to more complex code improvements.
5
Test on Multiple Devices
Verify improvements across desktop, mobile, and various network conditions.
6
Re-run the Audit
After implementing changes, run another audit to measure your improvement.
Core Web Vitals Optimization
LCP measures loading performance - how quickly the largest content element becomes visible.Optimization suggestions include:
- Server response time improvements
- Resource prioritization
- Image optimization techniques
- Critical rendering path optimization
- Effective caching strategies
Image and Media Optimization
Image Compression
Reduce file sizes without visual quality loss
Modern Formats
Convert to WebP, AVIF, and other efficient formats
Responsive Images
Create and serve appropriately sized images
Lazy Loading
Defer off-screen images for faster initial load
Video Optimization
Compress and properly serve video content
CDN Integration
Serve media from optimized content delivery networks
Code Optimization
JavaScript Optimization
JavaScript Optimization
The tool identifies JavaScript performance issues:
- Unused JavaScript code
- Render-blocking scripts
- Long-running tasks
- Inefficient event listeners
- Large dependencies
CSS Optimization
CSS Optimization
CSS optimization recommendations include:
- Removing unused CSS
- Inlining critical CSS
- Deferring non-critical styles
- Reducing CSS specificity issues
- Optimizing CSS animations
HTML Optimization
HTML Optimization
HTML optimization focuses on efficient document structure:
- Proper resource hints (preload, prefetch, preconnect)
- Efficient DOM size and nesting
- Semantic HTML usage
- Proper script loading attributes
- HTML minification
Third-Party Code Management
Third-Party Code Management
Third-party scripts often cause significant performance issues:
- Impact analysis of each third-party script
- Loading optimization for essential third-parties
- Identification of redundant services
- Self-hosting recommendations when appropriate
- Resource timing budgets for third-parties
Server and Network Optimization
Server Response Analysis
Identify and fix slow server response times
Caching Strategies
Implement effective browser and server-side caching
CDN Recommendations
Optimize content delivery with CDN suggestions
HTTP/2 & HTTP/3
Leverage modern protocols for faster delivery
TTFB Optimization
Improve Time To First Byte performance
Resource Prioritization
Prioritize critical resources for faster rendering
Mobile Performance Optimization
- Simulated testing on various mobile devices
- Network throttling to test on slow connections
- Mobile-specific rendering optimizations
- Touch responsiveness analysis
- Mobile-first loading strategies
- Progressive Web App (PWA) implementation suggestions
Performance Monitoring
Real User Monitoring
Track actual user experience metrics
Performance Budgets
Set and enforce limits for page size and speed
Regression Detection
Automatically detect performance deterioration
Competitive Benchmarking
Compare your performance against competitors
Technical Performance Optimizations
Web fonts can significantly impact performance:
- Font subsetting to reduce file sizes
- Optimal font loading strategies
- System font fallbacks
- Variable fonts implementation
- Font display settings
Performance Score Breakdown
Core Web Vitals
40% of total score
Page Size
15% of total score
Time to Interactive
15% of total score
Resource Optimization
15% of total score
Mobile Performance
10% of total score
Server Performance
5% of total score
Performance Improvement Case Studies
- E-commerce conversion rate increases after speed improvements
- Mobile engagement lifts from Core Web Vitals optimization
- SEO ranking improvements following performance upgrades
- User session duration extensions from smoother interactions
- Bounce rate reductions after initial load time improvements
Integration with Other Tools
The Performance Suggestions tool seamlessly integrates with other CodeNull features:Content Analysis
Ensure your content is optimized without sacrificing performance
Keyword Suggestions
Balance keyword usage with performance best practices
SEO Optimization
View performance in the context of overall SEO
Deployment Dashboard
Deploy performance-optimized websites to production
Performance Optimization Best Practices
Image Optimization
Image Optimization
- Use modern formats like WebP and AVIF
- Implement responsive images with srcset and sizes
- Apply appropriate compression levels
- Lazy load images below the fold
- Consider using image CDNs for automatic optimization
- Properly size images for their display dimensions
JavaScript Efficiency
JavaScript Efficiency
- Use code splitting to load only what’s needed
- Defer non-critical JavaScript
- Minimize third-party script impact
- Implement efficient event delegation
- Remove unused code via tree shaking
- Consider smaller alternatives to large libraries
CSS Optimization
CSS Optimization
- Use CSS containment to improve rendering performance
- Inline critical CSS
- Defer non-critical CSS
- Minimize CSS selector complexity
- Use efficient CSS animations
- Implement Critical CSS patterns
Server Optimization
Server Optimization
- Implement effective caching headers
- Enable compression (Brotli or Gzip)
- Use a CDN for static assets
- Optimize database queries
- Implement connection pooling
- Consider edge computing for dynamic content
Performance optimization is an ongoing process, not a one-time effort. Regularly audit your website’s performance, especially after major updates or content additions.