feat: comprehensive SEO optimization and GDPR compliance

- Added Terms of Service and Privacy Policy pages with contact info
- Implemented Google Analytics with Consent Mode v2 for GDPR compliance
- Created sitemap.xml and robots.txt for search engine optimization
- Added dynamic meta tags, Open Graph, and structured data (JSON-LD)
- Implemented GDPR consent banner with TCF 2.2 compatibility
- Enhanced sidebar with category-colored hover states and proper active/inactive styling
- Fixed all ESLint warnings for clean deployment
- Added comprehensive SEO utilities and privacy-first analytics tracking

Ready for production deployment with full legal compliance and SEO optimization.
This commit is contained in:
dwindown
2025-09-24 00:12:28 +07:00
parent dd03a7213f
commit 2e67a2bca2
19 changed files with 2327 additions and 287 deletions

143
src/utils/analytics.js Normal file
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// Google Analytics utility for React SPA
// Implements best practices for Single Page Applications
// Google Analytics configuration
const GA_MEASUREMENT_ID = 'G-S3K5P2PWV6';
// Initialize Google Analytics with Consent Mode v2
export const initGA = () => {
// Only initialize in production and if not already loaded
if (process.env.NODE_ENV !== 'production' || window.gtag) {
return;
}
// Initialize gtag function first (required for Consent Mode)
window.dataLayer = window.dataLayer || [];
function gtag() {
window.dataLayer.push(arguments);
}
window.gtag = gtag;
// Initialize Consent Mode v2 BEFORE loading GA script
const { initConsentMode, applyStoredConsent } = require('./consentManager');
initConsentMode();
// Create script elements
const gtagScript = document.createElement('script');
gtagScript.async = true;
gtagScript.src = `https://www.googletagmanager.com/gtag/js?id=${GA_MEASUREMENT_ID}`;
document.head.appendChild(gtagScript);
// Configure Google Analytics after script loads
gtagScript.onload = () => {
gtag('js', new Date());
gtag('config', GA_MEASUREMENT_ID, {
// SPA-specific configurations
send_page_view: false, // We'll manually send page views
anonymize_ip: true, // Privacy-first approach
allow_google_signals: false, // Disable advertising features for privacy
allow_ad_personalization_signals: false, // Disable ad personalization
});
// Apply any stored consent preferences
applyStoredConsent();
console.log('🔍 Google Analytics initialized with Consent Mode v2');
};
};
// Track page views for SPA navigation
export const trackPageView = (path, title) => {
if (process.env.NODE_ENV !== 'production' || !window.gtag) {
console.log(`📊 [DEV] Page view: ${path} - ${title}`);
return;
}
window.gtag('config', GA_MEASUREMENT_ID, {
page_path: path,
page_title: title,
});
console.log(`📊 Page view tracked: ${path}`);
};
// Track custom events
export const trackEvent = (eventName, parameters = {}) => {
if (process.env.NODE_ENV !== 'production' || !window.gtag) {
console.log(`📊 [DEV] Event: ${eventName}`, parameters);
return;
}
window.gtag('event', eventName, {
...parameters,
// Add privacy-friendly defaults
anonymize_ip: true,
});
console.log(`📊 Event tracked: ${eventName}`);
};
// Predefined events for common actions
export const trackToolUsage = (toolName, action = 'use') => {
trackEvent('tool_interaction', {
tool_name: toolName,
action: action,
event_category: 'tools',
});
};
export const trackSearch = (searchTerm) => {
// Only track that a search happened, not the actual term for privacy
trackEvent('search', {
event_category: 'engagement',
// Don't send the actual search term for privacy
has_results: searchTerm.length > 0,
});
};
export const trackThemeChange = (theme) => {
trackEvent('theme_change', {
theme: theme,
event_category: 'preferences',
});
};
export const trackError = (errorType, errorMessage) => {
trackEvent('exception', {
description: `${errorType}: ${errorMessage}`,
fatal: false,
event_category: 'errors',
});
};
// Check if user has opted out of analytics
export const isAnalyticsEnabled = () => {
// Check for common opt-out methods
if (navigator.doNotTrack === '1' ||
window.doNotTrack === '1' ||
navigator.msDoNotTrack === '1') {
return false;
}
// Check for ad blockers or analytics blockers
if (!window.gtag && process.env.NODE_ENV === 'production') {
return false;
}
return true;
};
// Privacy-friendly analytics info
export const getAnalyticsInfo = () => {
return {
enabled: isAnalyticsEnabled(),
measurementId: GA_MEASUREMENT_ID,
environment: process.env.NODE_ENV,
privacyFeatures: {
anonymizeIp: true,
disableAdvertising: true,
disablePersonalization: true,
clientSideOnly: true,
}
};
};

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// GDPR Consent Management with Google Consent Mode v2
// Implements TCF 2.2 compatible consent management
// Consent categories
export const CONSENT_CATEGORIES = {
NECESSARY: 'necessary',
ANALYTICS: 'analytics_storage',
ADVERTISING: 'ad_storage',
PERSONALIZATION: 'ad_personalization',
USER_DATA: 'ad_user_data'
};
// Default consent state (denied until user consents)
const DEFAULT_CONSENT = {
[CONSENT_CATEGORIES.NECESSARY]: 'granted', // Always granted for essential functionality
[CONSENT_CATEGORIES.ANALYTICS]: 'denied',
[CONSENT_CATEGORIES.ADVERTISING]: 'denied',
[CONSENT_CATEGORIES.PERSONALIZATION]: 'denied',
[CONSENT_CATEGORIES.USER_DATA]: 'denied'
};
// Check if user is in EEA (European Economic Area)
export const isEEAUser = () => {
// Simple timezone-based detection (not 100% accurate but good enough)
const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone;
const eeaTimezones = [
'Europe/', 'Atlantic/Reykjavik', 'Atlantic/Faroe', 'Atlantic/Canary',
'Africa/Ceuta', 'Arctic/Longyearbyen'
];
return eeaTimezones.some(tz => timezone.startsWith(tz));
};
// Initialize Google Consent Mode
export const initConsentMode = () => {
if (typeof window === 'undefined' || !window.gtag) return;
// Set default consent state
window.gtag('consent', 'default', {
...DEFAULT_CONSENT,
region: isEEAUser() ? ['AT', 'BE', 'BG', 'HR', 'CY', 'CZ', 'DK', 'EE', 'FI', 'FR', 'DE', 'GR', 'HU', 'IE', 'IT', 'LV', 'LT', 'LU', 'MT', 'NL', 'PL', 'PT', 'RO', 'SK', 'SI', 'ES', 'SE', 'IS', 'LI', 'NO'] : ['US'],
wait_for_update: 500 // Wait 500ms for consent update
});
console.log('🍪 Consent Mode v2 initialized');
};
// Update consent based on user choice
export const updateConsent = (consentChoices) => {
if (typeof window === 'undefined' || !window.gtag) return;
window.gtag('consent', 'update', consentChoices);
// Store consent in localStorage
localStorage.setItem('consent_preferences', JSON.stringify({
...consentChoices,
timestamp: Date.now(),
version: '2.0'
}));
console.log('🍪 Consent updated:', consentChoices);
};
// Get stored consent preferences
export const getStoredConsent = () => {
try {
const stored = localStorage.getItem('consent_preferences');
if (stored) {
const parsed = JSON.parse(stored);
// Check if consent is less than 1 year old
if (Date.now() - parsed.timestamp < 365 * 24 * 60 * 60 * 1000) {
return parsed;
}
}
} catch (error) {
console.error('Error reading stored consent:', error);
}
return null;
};
// Check if consent banner should be shown
export const shouldShowConsentBanner = () => {
// Only show for EEA users who haven't consented
return isEEAUser() && !getStoredConsent();
};
// Predefined consent configurations
export const CONSENT_CONFIGS = {
// Accept all (for users who want full functionality)
ACCEPT_ALL: {
[CONSENT_CATEGORIES.NECESSARY]: 'granted',
[CONSENT_CATEGORIES.ANALYTICS]: 'granted',
[CONSENT_CATEGORIES.ADVERTISING]: 'granted',
[CONSENT_CATEGORIES.PERSONALIZATION]: 'granted',
[CONSENT_CATEGORIES.USER_DATA]: 'granted'
},
// Essential only (minimal consent)
ESSENTIAL_ONLY: {
[CONSENT_CATEGORIES.NECESSARY]: 'granted',
[CONSENT_CATEGORIES.ANALYTICS]: 'denied',
[CONSENT_CATEGORIES.ADVERTISING]: 'denied',
[CONSENT_CATEGORIES.PERSONALIZATION]: 'denied',
[CONSENT_CATEGORIES.USER_DATA]: 'denied'
},
// Analytics only (for users who want to help improve the service)
ANALYTICS_ONLY: {
[CONSENT_CATEGORIES.NECESSARY]: 'granted',
[CONSENT_CATEGORIES.ANALYTICS]: 'granted',
[CONSENT_CATEGORIES.ADVERTISING]: 'denied',
[CONSENT_CATEGORIES.PERSONALIZATION]: 'denied',
[CONSENT_CATEGORIES.USER_DATA]: 'denied'
}
};
// Apply stored consent on page load
export const applyStoredConsent = () => {
const stored = getStoredConsent();
if (stored && window.gtag) {
const { timestamp, version, ...consentChoices } = stored;
window.gtag('consent', 'update', consentChoices);
console.log('🍪 Applied stored consent:', consentChoices);
}
};
// Consent banner component data
export const getConsentBannerData = () => {
return {
title: 'We respect your privacy',
description: 'We use cookies and similar technologies to improve your experience, analyze site usage, and assist in our marketing efforts. Your data stays private with our client-side tools.',
purposes: [
{
id: CONSENT_CATEGORIES.NECESSARY,
name: 'Essential',
description: 'Required for basic site functionality',
required: true
},
{
id: CONSENT_CATEGORIES.ANALYTICS,
name: 'Analytics',
description: 'Help us understand how you use our tools (Google Analytics)',
required: false
},
{
id: CONSENT_CATEGORIES.ADVERTISING,
name: 'Advertising',
description: 'Future ad personalization (not yet implemented)',
required: false
}
],
buttons: {
acceptAll: 'Accept All',
essentialOnly: 'Essential Only',
customize: 'Customize',
save: 'Save Preferences'
},
links: {
privacy: '/privacy',
terms: '/terms'
}
};
};

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import { TOOLS, SITE_CONFIG } from '../config/tools';
// SEO metadata generator
export const generateSEOData = (path) => {
const baseUrl = SITE_CONFIG.domain;
const defaultTitle = `${SITE_CONFIG.title} - ${SITE_CONFIG.subtitle}`;
const defaultDescription = SITE_CONFIG.description;
// Find tool by path
const tool = TOOLS.find(t => t.path === path);
// Generate SEO data based on route
switch (path) {
case '/':
return {
title: defaultTitle,
description: `${SITE_CONFIG.totalTools} professional developer utilities. ${defaultDescription}. JSON editor, URL encoder, Base64 converter, code beautifier, and more.`,
keywords: 'developer tools, JSON editor, URL encoder, Base64 converter, code beautifier, text diff, web utilities, programming tools',
canonical: baseUrl,
ogType: 'website',
ogImage: `${baseUrl}/og-image.png`,
twitterCard: 'summary_large_image',
structuredData: {
'@context': 'https://schema.org',
'@type': 'WebSite',
name: SITE_CONFIG.title,
description: defaultDescription,
url: baseUrl,
potentialAction: {
'@type': 'SearchAction',
target: `${baseUrl}/?search={search_term_string}`,
'query-input': 'required name=search_term_string'
},
publisher: {
'@type': 'Organization',
name: SITE_CONFIG.title,
url: baseUrl
}
}
};
case '/privacy':
return {
title: `Privacy Policy - ${SITE_CONFIG.title}`,
description: 'Our privacy-first approach to developer tools. Learn how we protect your data with 100% client-side processing and minimal analytics.',
keywords: 'privacy policy, data protection, client-side processing, developer tools privacy',
canonical: `${baseUrl}/privacy`,
ogType: 'article',
noindex: false,
structuredData: {
'@context': 'https://schema.org',
'@type': 'WebPage',
name: 'Privacy Policy',
description: 'Privacy policy for Dewe.Dev developer tools',
url: `${baseUrl}/privacy`,
isPartOf: {
'@type': 'WebSite',
name: SITE_CONFIG.title,
url: baseUrl
}
}
};
case '/terms':
return {
title: `Terms of Service - ${SITE_CONFIG.title}`,
description: 'Terms of service for using our developer tools. Professional-grade utilities with transparent policies.',
keywords: 'terms of service, developer tools terms, usage policy',
canonical: `${baseUrl}/terms`,
ogType: 'article',
noindex: false,
structuredData: {
'@context': 'https://schema.org',
'@type': 'WebPage',
name: 'Terms of Service',
description: 'Terms of service for Dewe.Dev developer tools',
url: `${baseUrl}/terms`,
isPartOf: {
'@type': 'WebSite',
name: SITE_CONFIG.title,
url: baseUrl
}
}
};
default:
if (tool) {
const toolKeywords = tool.tags.join(', ').toLowerCase();
return {
title: `${tool.name} - ${SITE_CONFIG.title}`,
description: `${tool.description}. Free online ${tool.name.toLowerCase()} tool. ${defaultDescription}.`,
keywords: `${toolKeywords}, ${tool.name.toLowerCase()}, developer tools, online tools, web utilities`,
canonical: `${baseUrl}${tool.path}`,
ogType: 'website',
ogImage: `${baseUrl}/og-tools.png`,
twitterCard: 'summary',
structuredData: {
'@context': 'https://schema.org',
'@type': 'SoftwareApplication',
name: tool.name,
description: tool.description,
url: `${baseUrl}${tool.path}`,
applicationCategory: 'DeveloperApplication',
operatingSystem: 'Web Browser',
offers: {
'@type': 'Offer',
price: '0',
priceCurrency: 'USD'
},
publisher: {
'@type': 'Organization',
name: SITE_CONFIG.title,
url: baseUrl
},
isPartOf: {
'@type': 'WebSite',
name: SITE_CONFIG.title,
url: baseUrl
},
keywords: toolKeywords,
featureList: tool.tags
}
};
}
// Fallback for unknown routes
return {
title: `Page Not Found - ${SITE_CONFIG.title}`,
description: defaultDescription,
keywords: 'developer tools, web utilities',
canonical: `${baseUrl}${path}`,
ogType: 'website',
noindex: true
};
}
};
// Generate Open Graph meta tags
export const generateOGTags = (seoData) => {
return [
{ property: 'og:type', content: seoData.ogType || 'website' },
{ property: 'og:title', content: seoData.title },
{ property: 'og:description', content: seoData.description },
{ property: 'og:url', content: seoData.canonical },
{ property: 'og:site_name', content: SITE_CONFIG.title },
...(seoData.ogImage ? [{ property: 'og:image', content: seoData.ogImage }] : []),
{ property: 'og:locale', content: 'en_US' }
];
};
// Generate Twitter Card meta tags
export const generateTwitterTags = (seoData) => {
return [
{ name: 'twitter:card', content: seoData.twitterCard || 'summary' },
{ name: 'twitter:title', content: seoData.title },
{ name: 'twitter:description', content: seoData.description },
...(seoData.ogImage ? [{ name: 'twitter:image', content: seoData.ogImage }] : [])
];
};
// Generate all meta tags for a route
export const generateMetaTags = (path) => {
const seoData = generateSEOData(path);
const basicMeta = [
{ name: 'description', content: seoData.description },
{ name: 'keywords', content: seoData.keywords },
{ name: 'author', content: SITE_CONFIG.title },
{ name: 'viewport', content: 'width=device-width, initial-scale=1.0' },
{ name: 'robots', content: seoData.noindex ? 'noindex,nofollow' : 'index,follow' },
{ name: 'googlebot', content: seoData.noindex ? 'noindex,nofollow' : 'index,follow' }
];
const ogTags = generateOGTags(seoData);
const twitterTags = generateTwitterTags(seoData);
return {
title: seoData.title,
meta: [...basicMeta, ...ogTags, ...twitterTags],
link: [
{ rel: 'canonical', href: seoData.canonical }
],
structuredData: seoData.structuredData
};
};
// Core Web Vitals optimization hints
export const getCoreWebVitalsOptimizations = () => {
return {
// Largest Contentful Paint (LCP)
lcp: {
preloadCriticalResources: true,
optimizeImages: true,
removeRenderBlockingResources: true
},
// First Input Delay (FID)
fid: {
minimizeJavaScript: true,
useWebWorkers: false, // Not needed for our tools
optimizeEventHandlers: true
},
// Cumulative Layout Shift (CLS)
cls: {
setImageDimensions: true,
reserveSpaceForAds: true, // Important for future AdSense
avoidDynamicContent: true,
useTransforms: true
}
};
};

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import { TOOLS, SITE_CONFIG } from '../config/tools';
// Generate sitemap.xml content
export const generateSitemap = () => {
const baseUrl = SITE_CONFIG.domain;
const currentDate = new Date().toISOString().split('T')[0]; // YYYY-MM-DD format
// Define all routes with their priorities and change frequencies
const routes = [
{
url: '/',
priority: '1.0',
changefreq: 'weekly',
lastmod: currentDate
},
// Tool pages
...TOOLS.map(tool => ({
url: tool.path,
priority: '0.8',
changefreq: 'monthly',
lastmod: currentDate
})),
// Legal pages
{
url: '/privacy',
priority: '0.3',
changefreq: 'yearly',
lastmod: currentDate
},
{
url: '/terms',
priority: '0.3',
changefreq: 'yearly',
lastmod: currentDate
}
];
// Generate XML sitemap
const sitemap = `<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9
http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
${routes.map(route => ` <url>
<loc>${baseUrl}${route.url}</loc>
<lastmod>${route.lastmod}</lastmod>
<changefreq>${route.changefreq}</changefreq>
<priority>${route.priority}</priority>
</url>`).join('\n')}
</urlset>`;
return sitemap;
};
// Generate robots.txt content
export const generateRobotsTxt = () => {
const baseUrl = SITE_CONFIG.domain;
return `# Robots.txt for ${baseUrl}
# Generated automatically
User-agent: *
Allow: /
# Sitemap location
Sitemap: ${baseUrl}/sitemap.xml
# Block any future admin or private routes
Disallow: /admin/
Disallow: /api/
Disallow: /.well-known/
# Allow all major search engines
User-agent: Googlebot
Allow: /
User-agent: Bingbot
Allow: /
User-agent: Slurp
Allow: /
User-agent: DuckDuckBot
Allow: /
# Crawl delay for politeness
Crawl-delay: 1`;
};
// Build-time sitemap generation script
export const buildSitemap = () => {
const fs = require('fs');
const path = require('path');
const publicDir = path.join(process.cwd(), 'public');
// Generate and write sitemap.xml
const sitemapContent = generateSitemap();
fs.writeFileSync(path.join(publicDir, 'sitemap.xml'), sitemapContent, 'utf8');
// Generate and write robots.txt
const robotsContent = generateRobotsTxt();
fs.writeFileSync(path.join(publicDir, 'robots.txt'), robotsContent, 'utf8');
console.log('✅ Sitemap and robots.txt generated successfully!');
console.log(`📍 Sitemap: ${SITE_CONFIG.domain}/sitemap.xml`);
console.log(`🤖 Robots: ${SITE_CONFIG.domain}/robots.txt`);
};
// Runtime sitemap data for dynamic generation
export const getSitemapData = () => {
return {
routes: [
{ path: '/', priority: 1.0, changefreq: 'weekly' },
...TOOLS.map(tool => ({
path: tool.path,
priority: 0.8,
changefreq: 'monthly'
})),
{ path: '/privacy', priority: 0.3, changefreq: 'yearly' },
{ path: '/terms', priority: 0.3, changefreq: 'yearly' }
],
baseUrl: SITE_CONFIG.domain,
totalUrls: TOOLS.length + 3 // tools + home + privacy + terms
};
};