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SEOMeta Tags
The Ultimate Meta Tags SEO Checklist for 2026
A comprehensive, copy-paste checklist of every HTML meta tag that affects SEO, social sharing, and browser behavior.
9 min read
Meta tags are the foundation of how search engines and social platforms understand your pages. This checklist covers every tag that matters — from basic SEO to advanced social and browser configuration.
Copy the relevant sections into your <head> and customize for your site.
Essential SEO Tags
Every page on your site should include these:
<!-- Primary SEO -->
<title>Page Title — Site Name</title>
<meta name="description" content="Concise summary in 120-160 characters." />
<link rel="canonical" href="https://example.com/current-page" />
<meta name="robots" content="index, follow" />
<!-- Language & Encoding -->
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<html lang="en">Checklist
- Title tag is 30–60 characters and unique per page
- Meta description is 120–160 characters with a value proposition
- Canonical URL is absolute and self-referencing
- Viewport meta is set for mobile responsiveness
- Language attribute is set on
<html> - Character encoding is UTF-8
Open Graph Tags
Control how your pages appear when shared on Facebook, LinkedIn, WhatsApp, Discord, and Slack:
<meta property="og:title" content="Page Title" />
<meta property="og:description" content="Brief summary for social cards." />
<meta property="og:image" content="https://example.com/og-image.jpg" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />
<meta property="og:url" content="https://example.com/current-page" />
<meta property="og:type" content="website" />
<meta property="og:site_name" content="Your Site Name" />
<meta property="og:locale" content="en_US" />Checklist
- og:title matches or refines the
<title>tag - og:description is compelling but under 200 characters
- og:image uses an absolute HTTPS URL
- og:image is at least 1200×630 pixels
- og:url matches the canonical URL
- og:type is set (
website,article,product, etc.)
Twitter Card Tags
Most Twitter card data falls back to OG tags, but you need at minimum:
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:site" content="@yourbrand" />Optional Overrides
<meta name="twitter:title" content="Shorter title for X" />
<meta name="twitter:description" content="Shorter description" />
<meta name="twitter:image" content="https://example.com/twitter-image.jpg" />Checklist
- twitter:card is set to
summary_large_imagefor link posts - twitter:site mentions your brand’s X handle
Favicon & App Icons
<!-- Standard favicon -->
<link rel="icon" href="/favicon.ico" sizes="32x32" />
<link rel="icon" href="/favicon.svg" type="image/svg+xml" />
<link rel="apple-touch-icon" href="/apple-touch-icon.png" />
<!-- Web app manifest -->
<link rel="manifest" href="/site.webmanifest" />
<meta name="theme-color" content="#171717" />Checklist
- favicon.ico exists at the root
- Apple Touch Icon is 180×180 pixels
- Web app manifest includes icon definitions
- Theme color is set for mobile browsers
Performance & Preloading
<!-- Preconnect to critical origins -->
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<!-- Preload critical resources -->
<link rel="preload" href="/fonts/main.woff2" as="font" type="font/woff2" crossorigin />
<!-- DNS prefetch for analytics -->
<link rel="dns-prefetch" href="https://www.googletagmanager.com" />International & Multi-Language
<!-- Alternate language versions -->
<link rel="alternate" hreflang="en" href="https://example.com/en/page" />
<link rel="alternate" hreflang="es" href="https://example.com/es/page" />
<link rel="alternate" hreflang="x-default" href="https://example.com/page" />Security Tags
<!-- Content Security Policy -->
<meta http-equiv="Content-Security-Policy" content="default-src 'self'" />
<!-- Prevent MIME sniffing -->
<meta http-equiv="X-Content-Type-Options" content="nosniff" />
<!-- Referrer policy -->
<meta name="referrer" content="strict-origin-when-cross-origin" />Tags You Should NOT Use
These tags are outdated or ignored by modern search engines:
| Tag | Why to Skip |
|---|---|
<meta name="keywords"> |
Ignored by Google since 2009 |
<meta name="author"> |
No SEO impact; use JSON-LD instead |
<meta name="revisit-after"> |
Crawlers set their own schedule |
<meta http-equiv="refresh"> |
Use server-side redirects (301/302) |
<meta name="generator"> |
Reveals your CMS; minor security risk |
Quick Validation
Run these checks before every deployment:
- Google Rich Results Test — validates structured data
- Facebook Sharing Debugger — validates OG tags
- Lighthouse SEO Audit — checks technical SEO
- Our Open Graph Generator — previews social cards across 8+ platforms
Use our Open Graph Generator and Meta Tag Auditor to preview, generate, and validate all the social meta tags from this checklist instantly.