Performance Suggestions

Optimize your website’s loading speed for better search engine rankings and user experience

Performance Suggestions

CodeNull’s Performance Suggestions tool helps you identify and fix performance issues that affect both user experience and search engine rankings.

Overview

The Performance Suggestions tool analyzes your website for speed and performance issues, providing actionable recommendations to improve:

• 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

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

Google has explicitly stated that page experience signals, including loading performance, are ranking factors.

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

Performance optimization directly translates to better user retention and engagement.

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

Performance optimization is one of the most cost-effective ways to improve conversion rates.

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

The tool provides detailed analysis and optimization suggestions for Google’s Core Web Vitals:

Largest Contentful Paint (LCP)

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

The tool identifies specific elements causing LCP issues and provides tailored fixes.

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

The tool identifies specific elements causing LCP issues and provides tailored fixes.

FID measures interactivity - how quickly your site responds to user interactions.

Optimization suggestions include:

• Breaking up long JavaScript tasks
• Reducing JavaScript execution time
• Deferring non-critical JavaScript
• Minimizing main thread work
• Optimizing event listeners

The tool identifies JavaScript execution bottlenecks and suggests code optimizations.

CLS measures visual stability - preventing unexpected layout shifts.

Optimization suggestions include:

• Properly sizing media elements
• Using aspect ratio boxes for images and videos
• Avoiding dynamically injected content
• Reserving space for ads and embeds
• Preventing FOIT/FOUT with proper font loading

The tool pinpoints specific elements causing layout shifts and provides fixes.

INP measures responsiveness - how quickly your page responds after user interactions.

Optimization suggestions include:

• Optimizing event handlers
• Improving input latency
• Reducing main thread blocking
• Optimizing rendering performance
• Implementing efficient state management

The tool identifies interactions with poor responsiveness and suggests improvements.

Image and Media Optimization

The tool automatically analyzes and optimizes images and media files:

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

The tool identifies JavaScript performance issues:

• Unused JavaScript code
• Render-blocking scripts
• Long-running tasks
• Inefficient event listeners
• Large dependencies

Optimization suggestions include code splitting, tree shaking, and efficient loading strategies.

CSS Optimization

CSS optimization recommendations include:

• Removing unused CSS
• Inlining critical CSS
• Deferring non-critical styles
• Reducing CSS specificity issues
• Optimizing CSS animations

The tool analyzes your CSS coverage and identifies opportunities for reduction.

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

The tool checks for best practices in HTML structure that affect performance.

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

The tool helps you manage the performance impact of analytics, ads, and other third-party code.

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

The tool provides specialized mobile performance analysis:

• 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

Font Optimization

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

The tool analyzes your font usage and provides tailored recommendations.

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

The tool analyzes your font usage and provides tailored recommendations.

Smooth animations are crucial for perceived performance:

• GPU-accelerated animations
• Avoiding layout thrashing
• requestAnimationFrame usage
• CSS vs. JavaScript animation guidance
• Debouncing and throttling techniques

The tool identifies performance-intensive animations and suggests optimizations.

Strategic resource hints improve perceived performance:

• Preload critical resources
• Prefetch likely navigation destinations
• Preconnect to required origins
• DNS-prefetch for external domains
• Prerendering for instant page transitions

The tool suggests appropriate resource hints based on user journey analysis.

Service Workers enable advanced performance patterns:

• Offline functionality
• Network request caching
• Background asset pre-caching
• Intelligent fallbacks
• Push notification optimizations

The tool helps implement and optimize Service Worker strategies.

Performance Score Breakdown

Your performance score is calculated based on several factors:

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

The tool provides real-world examples of performance improvements and their impact:

• 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

These case studies help you understand the business value of specific optimizations.

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

• 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

• 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

• 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

• 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.

Next Steps

Content Analysis

Optimize your content while maintaining performance

Keyword Suggestions

Find keywords to target with your optimized pages

SEO Optimization

Return to the main SEO Optimization dashboard

Deployment Dashboard

Deploy your performance-optimized website