Analisador de SEO & Desempenho Web

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<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>GitHub · Change is constant. GitHub keeps you ahead. · GitHub · GitHub</title>
<meta name="description" content="Join the world&#039;s most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.">
<link rel="canonical" href="https://github.com/">
<link rel="icon" href="/favicon.ico">

<!-- Open Graph (WhatsApp, Facebook, LinkedIn) -->
<meta property="og:type" content="website">
<meta property="og:url" content="https://github.com/">
<meta property="og:title" content="GitHub · Change is constant. GitHub keeps you ahead. · GitHub">
<meta property="og:description" content="Join the world&#039;s most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.">
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<meta name="twitter:card" content="summary_large_image">
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# ====================================================
# Regras de Otimização e Segurança (.htaccess / Apache)
# ====================================================

# 1. Forçar HTTPS (Redirecionamento 301 Seguro)
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

# 2. Cabeçalhos de Segurança HTTP
<IfModule mod_headers.c>
    Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
    Header always set X-Content-Type-Options "nosniff"
    Header always set X-Frame-Options "SAMEORIGIN"
    Header always set Referrer-Policy "strict-origin-when-cross-origin"
</IfModule>

# 3. Ativar Compressão Gzip (Reduz peso de HTML, CSS e JS)
<IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript application/json
</IfModule>

# 4. Cache do Navegador (Cache-Control)
<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType text/css "access plus 1 month"
    ExpiresByType application/javascript "access plus 1 month"
    ExpiresByType image/webp "access plus 1 year"
    ExpiresByType image/png "access plus 1 year"
    ExpiresByType image/jpeg "access plus 1 year"
</IfModule>