Performance Optimization Guide

This guide provides recommendations for optimizing your website or application performance when running in Macro Browser.

Understanding Macro Browser's Architecture

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Macro Browser has several key architectural features that affect performance:

1. Multi-Process Architecture: Like other Chromium-based browsers, Macro Browser uses separate processes for the browser core, renderer, GPU, and networking.

2. Privacy Features: Privacy protection mechanisms may impact performance in specific scenarios.

3. P2P VPN Integration: Network requests may be routed through the P2P VPN network.

4. Memory-First Storage: Macro Browser minimizes disk operations for privacy.

Performance Best Practices

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Resource Loading Optimization

Diagram 1

Prioritize Critical Resources

<!-- Preload critical CSS -->
<link rel="preload" href="/css/critical.css" as="style">

<!-- Preload critical fonts with crossorigin attribute -->
<link rel="preload" href="/fonts/main.woff2" as="font" type="font/woff2" crossorigin>

<!-- Inline critical CSS -->
<style>
  /* Critical CSS here */
  .header { /* ... */ }
  .hero { /* ... */ }
</style>

Lazy Loading

<!-- Images -->
<img src="placeholder.jpg" 
     data-src="real-image.jpg" 
     loading="lazy" 
     class="lazy-image">

<!-- For browsers that don't support native lazy loading -->
<script>
  if ('loading' in HTMLImageElement.prototype) {
    // Convert to use native lazy loading
    document.querySelectorAll('img.lazy-image').forEach(img => {
      img.src = img.dataset.src;
    });
  } else {
    // Use intersection observer polyfill
    // ...
  }
</script>

Efficient JavaScript Loading

<!-- Defer non-critical JavaScript -->
<script src="app.js" defer></script>

<!-- Use type="module" for modern browsers (automatically deferred) -->
<script type="module" src="app.mjs"></script>

<!-- For legacy browser support -->
<script nomodule src="app.legacy.js" defer></script>

Rendering Performance

DOM Size Optimization

Macro Browser, like all Chromium-based browsers, performs better with smaller DOM trees:

• Keep DOM nodes under 1,500 if possible

• Maximum depth of 32 elements

• No parent node with more than 60 child nodes

CSS Optimization

/* Avoid expensive CSS properties */
.good {
  transform: translateZ(0);  /* Uses GPU acceleration */
}

.avoid-when-possible {
  box-shadow: 0px 0px 10px rgba(0,0,0,0.5); /* Can be expensive */
  filter: blur(5px);         /* Expensive for large elements */
  position: fixed;           /* Can trigger full repaints */
}

/* Use efficient selectors */
.efficient { color: blue; }              /* Good - class selector */
.parent > .child { color: blue; }        /* OK - one level of inheritance */
.parent .child .grandchild { color: blue; } /* Avoid - expensive */

Animation Performance

For smooth animations, especially in privacy-focused browsers:

// Use requestAnimationFrame for animations
function animate() {
  // Update animation
  element.style.transform = `translateX(${position}px)`;

  // Schedule next frame
  requestAnimationFrame(animate);
}

// Start animation
requestAnimationFrame(animate);

// Prefer CSS animations for simple cases
const styles = `
.animated {
  transition: transform 0.3s ease-out;
  will-change: transform;
}
`;

Compositor-Only Properties

For the best animation performance, prefer properties that only affect the compositor:

• Good properties: transform, opacity

• Avoid animating: width, height, left, top, background-color

Memory Management

Efficient Data Structures

// Use appropriate data structures
// Map for key-value pairs with non-string keys
const userCache = new Map();

// Set for unique values
const uniqueVisitors = new Set();

// TypedArrays for binary data
const binaryData = new Uint8Array(1024);

Memory Leaks Prevention

Particularly important in Macro Browser as it runs a memory-first approach:

class Component {
  constructor() {
    this.element = document.createElement('div');
    this.bindEvents();
  }

  bindEvents() {
    // Store reference to bound function for later removal
    this.boundClickHandler = this.handleClick.bind(this);
    this.element.addEventListener('click', this.boundClickHandler);
  }

  handleClick() {
    // Handle click
  }

  destroy() {
    // Remove event listeners
    this.element.removeEventListener('click', this.boundClickHandler);
    // Remove references
    this.element = null;
    this.boundClickHandler = null;
  }
}

Network Optimization

Bandwidth Efficiency

Macro Browser routes traffic through privacy layers, making bandwidth optimization particularly important:

// Compress API responses
const compressionMiddleware = (req, res, next) => {
  // Only compress certain content types
  if (shouldCompress(req)) {
    res.setHeader('Content-Encoding', 'gzip');
    // Compress response
  }
  next();
};

// Client-side request batching
async function batchRequests(requests) {
  // Combine multiple related API calls
  return fetch('/batch', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ requests })
  }).then(res => res.json());
}

Cache-Aware Programming

// Use cache headers properly
app.get('/api/data', (req, res) => {
  // Add cache headers
  res.setHeader('Cache-Control', 'public, max-age=300');
  res.setHeader('ETag', generateETag(data));
  res.json(data);
});

// Client-side caching with Service Worker
const CACHE_NAME = 'app-v1';

self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => {
      return cache.addAll([
        '/',
        '/index.html',
        '/styles.css',
        '/app.js',
      ]);
    })
  );
});

Web3 Specific Optimizations

Efficient Contract Calls

// Batch reads using multicall
async function batchContractCalls(contract, methodName, paramSets) {
  const multicallContract = new ethers.Contract(
    MULTICALL_ADDRESS, 
    MULTICALL_ABI, 
    provider
  );

  const calls = paramSets.map(params => ({
    target: contract.address,
    callData: contract.interface.encodeFunctionData(methodName, params)
  }));

  const { returnData } = await multicallContract.aggregate(calls);

  return returnData.map(data => 
    contract.interface.decodeFunctionResult(methodName, data)
  );
}

State Management for Web3

// Cache transaction data
class TransactionCache {
  constructor(ttlSeconds = 60) {
    this.cache = new Map();
    this.ttl = ttlSeconds * 1000;
  }

  set(txHash, data) {
    const expiry = Date.now() + this.ttl;
    this.cache.set(txHash, { data, expiry });
  }

  get(txHash) {
    const cached = this.cache.get(txHash);
    if (!cached) return null;

    if (cached.expiry < Date.now()) {
      this.cache.delete(txHash);
      return null;
    }

    return cached.data;
  }
}

Macro-Specific Optimizations

Privacy-Aware Analytics

Standard analytics often get blocked. Consider privacy-friendly alternatives:

// Simple privacy-respecting analytics
const sendAnalytics = (event) => {
  // Only collect non-identifying metrics
  const data = {
    eventName: event,
    // No user identifiers
    screen: {
      width: window.innerWidth,
      height: window.innerHeight
    },
    timestamp: Date.now()
  };

  // Use sendBeacon for reliability
  navigator.sendBeacon('/analytics', JSON.stringify(data));
};

VPN-Aware Networking

When the P2P VPN is active, network requests might have different characteristics:

// Check if VPN is enabled (Macro-specific feature)
async function isVpnEnabled() {
  if (window.ethereum && window.ethereum.isMacro) {
    try {
      return await window.ethereum.request({
        method: 'macro_isVpnEnabled'
      });
    } catch (e) {
      console.error('Error checking VPN status:', e);
      return false;
    }
  }
  return false;
}

// Adapt network strategy based on VPN status
async function optimizeNetworkRequests() {
  const vpnEnabled = await isVpnEnabled();

  if (vpnEnabled) {
    // When VPN is enabled:
    // 1. Reduce number of connections
    // 2. Potentially batch more requests
    // 3. Be more aggressive with caching
    setNetworkStrategy('vpn-optimized');
  } else {
    setNetworkStrategy('standard');
  }
}

Performance Testing

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Browser-Specific Testing

// Detect Macro Browser
function isMacroBrowser() {
  return (
    // Check for the Macro provider
    (window.ethereum && window.ethereum.isMacro) ||
    // Check for user agent (less reliable)
    navigator.userAgent.includes('MacroBrowser')
  );
}

// Conditional testing
function runPerformanceTests() {
  const commonTests = [
    testPageLoad,
    testInteractivity,
  ];

  const tests = isMacroBrowser() 
    ? [...commonTests, testPrivacyFeatures, testVpnPerformance] 
    : commonTests;

  return Promise.all(tests.map(test => test()));
}

Lighthouse Configuration

// Lighthouse CLI configuration for Macro Browser testing
{
  "extends": "lighthouse:default",
  "settings": {
    "skipAudits": [
      // Skip audits that may be affected by privacy features
      "uses-third-party-cookies",
      "third-party-facades"
    ],
    "onlyCategories": [
      "performance",
      "accessibility",
      "best-practices"
    ]
  }
}

Common Performance Issues in Macro Browser

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Privacy Features Impact

Feature	Potential Impact	Mitigation
Ad/Tracker Blocking	Scripts may fail to load	Don't rely on blocked trackers; use privacy-friendly alternatives
P2P VPN	Variable latency	Implement progressive loading; prioritize critical content
Anti-Fingerprinting	Canvas/WebGL limitations	Provide fallbacks for fingerprinting-dependent features
Memory-Only Mode	No persistent storage	Use synchronization services or export functionality

Debugging Memory Issues

// Memory profiling helper
class MemoryProfiler {
  constructor(sampleInterval = 5000) {
    this.readings = [];
    this.interval = null;
    this.sampleInterval = sampleInterval;
  }

  start() {
    this.interval = setInterval(() => {
      if (window.performance && window.performance.memory) {
        const { usedJSHeapSize, totalJSHeapSize } = window.performance.memory;
        this.readings.push({
          time: Date.now(),
          used: usedJSHeapSize,
          total: totalJSHeapSize
        });

        // Check for memory growth
        this.detectMemoryGrowth();
      }
    }, this.sampleInterval);
  }

  stop() {
    clearInterval(this.interval);
    return this.getReport();
  }

  detectMemoryGrowth() {
    // Simplified leak detection by checking consistent growth
    if (this.readings.length < 10) return;

    const recentReadings = this.readings.slice(-10);
    let consistentGrowth = true;

    for (let i = 1; i < recentReadings.length; i++) {
      if (recentReadings[i].used <= recentReadings[i-1].used) {
        consistentGrowth = false;
        break;
      }
    }

    if (consistentGrowth) {
      console.warn('Potential memory leak detected: consistent memory growth');
    }
  }

  getReport() {
    return {
      readings: this.readings,
      averageUsage: this.readings.reduce((sum, r) => sum + r.used, 0) / this.readings.length,
      maxUsage: Math.max(...this.readings.map(r => r.used)),
      growthRate: this.readings.length > 1 ? 
        (this.readings[this.readings.length - 1].used - this.readings[0].used) / 
        (this.readings[this.readings.length - 1].time - this.readings[0].time) : 
        0
    };
  }
}

Migration Guide for Existing Apps

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From Chrome/Firefox to Macro Browser

Area	Chrome/Firefox Pattern	Macro Browser Pattern
Storage	localStorage/cookies for all data	Use memory storage; export critical data
Analytics	Full user tracking	Privacy-respecting event counting
Performance	Network-heavy operations	Optimize for privacy layers and VPN
Web3	Simple wallet detection	Enhanced security checks and permissions

Progressive Enhancement for Macro Features

// Feature detection for Macro-specific features
const browserCapabilities = {
  // Feature detection
  detectCapabilities: async () => {
    return {
      isPrivacyFocused: await detectPrivacyFeatures(),
      hasVpn: await detectVpnCapability(),
      hasWeb3: typeof window.ethereum !== 'undefined',
      isMacro: window.ethereum && window.ethereum.isMacro,
      hasEnhancedSecurity: window.ethereum && 
                          window.ethereum.isMacro && 
                          typeof window.ethereum.securityLevel !== 'undefined'
    };
  },

  // Apply optimizations based on detected capabilities
  applyOptimizations: async () => {
    const capabilities = await browserCapabilities.detectCapabilities();

    if (capabilities.isPrivacyFocused) {
      // Apply privacy-focused optimizations
    }

    if (capabilities.hasVpn) {
      // Apply VPN-aware optimizations
    }

    if (capabilities.isMacro && capabilities.hasEnhancedSecurity) {
      // Apply Macro-specific security optimizations
    }
  }
};

Conclusion

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Optimizing for Macro Browser requires attention to privacy features and understanding the impact of its unique architecture. By following these guidelines, you can ensure your application performs well while respecting user privacy and leveraging the browser's advanced features.

Performance Checklist

• [ ] Resources are properly prioritized and lazy-loaded

• [ ] DOM size is minimized

• [ ] CSS selectors are efficient

• [ ] Animations use compositor-friendly properties

• [ ] Memory is managed properly with no leaks

• [ ] Network requests are optimized for privacy layers

• [ ] Web3 interactions are batched when possible

• [ ] Analytics respect user privacy

• [ ] Application works with VPN enabled