What Are Open Graph Meta Tags?
Open Graph (OG) tags are snippets of HTML that control how your web pages appear when shared on social media, messaging apps, and other platforms. They were created by Facebook in 2010 and have since become the universal standard for link previews across the internet.
When someone shares your URL on WhatsApp, Twitter, LinkedIn, Slack, Discord, Instagram, or Facebook, these platforms read your OG tags to decide:
- What image to show
- What title to display
- What description to include
- What site name to attribute
Without OG tags, platforms either show nothing or guess—and they usually guess badly.
The Essential OG Tags (Every Page Needs These)
1. og:title — The Headline
<meta property="og:title" content="Your Page Title" />This is the bold headline in link previews. Keep it under 60 characters for universal compatibility (WhatsApp truncates at ~65, Twitter at ~70).
Tips:
- Don't duplicate your
tag verbatim—write a more compelling, shareable version - Don't use ALL CAPS (looks spammy, hurts CTR)
- Include your primary keyword naturally
2. og:description — The Subtitle
<meta property="og:description" content="A brief, compelling summary" />The supporting text beneath the title. Aim for 150 characters as the safe universal limit.
Tips:
- Include a call-to-action or value proposition
- Don't stuff keywords—write for humans
- Different from your meta description (optimize for the sharing context)
3. og:image — The Hero Image
<meta property="og:image" content="https://yoursite.com/og-image.jpg" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />The most impactful tag. Posts with images get 179% more engagement. Use the golden spec: 1200×630 px, JPG, under 300 KB.
Critical rules:
- Must be an absolute HTTPS URL
- Only use one
og:imagetag (multiple = unpredictable) - Never use SVG (unsupported on WhatsApp and Twitter)
- Include
og:image:widthandog:image:heightfor faster rendering
4. og:url — The Canonical URL
<meta property="og:url" content="https://yoursite.com/page" />The canonical URL for this content. This tells platforms which URL to associate the preview data with, preventing duplicate previews for the same content served at different URLs.
5. og:type — The Content Type
<meta property="og:type" content="website" />Tells platforms what kind of content this is. Common values:
website— Default for most pagesarticle— Blog posts, news articlesproduct— E-commerce products
Discord, notably, renders different og:type values with distinct styling.
Recommended (But Optional) OG Tags
og:site_name
<meta property="og:site_name" content="LinkPeek" />The name of your website. Critical for Slack, which uses it as the bold header when unfurling links. Facebook and other platforms use it as a subtle attribution label.
og:locale
<meta property="og:locale" content="en_US" />The language and region of the content. Useful for multilingual sites.
og:image:type
<meta property="og:image:type" content="image/jpeg" />Explicitly declares the image format. Helps platforms pre-validate the image without fetching it.
Twitter-Specific Tags
Twitter reads OG tags as fallbacks but has its own tag system:
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:site" content="@yourusername" />
<meta name="twitter:creator" content="@authorname" />Note: twitter:card has NO OG fallback—you must include it explicitly for Twitter card functionality.
The 10 Most Common OG Tag Mistakes
- Relative image URLs — Must be absolute
https://URLs - HTTP instead of HTTPS — Most platforms reject HTTP images
- SVG or GIF images — Not supported on WhatsApp; GIF not on LinkedIn
- Image too small — Below 100px (WhatsApp) or 200px (Facebook/LinkedIn)
- Image too large (file size) — Over 600 KB kills WhatsApp previews
- Duplicate title and description — Wastes the description for unique messaging
- ALL CAPS titles — Looks unprofessional, reduces CTR
- Multiple og:image tags — Causes unpredictable platform behavior
- Blocking crawlers via robots.txt — WhatsApp, Facebook, Twitter all crawl
- Image redirect chains — LinkedIn especially fails on multi-hop redirects
How to Test Your OG Tags
Platform-Specific Debuggers
| Platform | Tool | Action |
|---|---|---|
| Sharing Debugger | Click "Scrape Again" | |
| Twitter/X | Card Validator | Preview card |
| Post Inspector | Click "Refresh" |
Multi-Platform Testing
Use LinkPeek to test your link across all 6 major platforms simultaneously. It shows you real mockups for WhatsApp, Twitter, LinkedIn, Slack, Discord, and Instagram—plus a full audit with fix code for every issue.
OG Tags and SEO
Open Graph tags don't directly affect your Google search rankings. However, they indirectly boost SEO by:
- Increasing CTR — Better previews → more clicks → more traffic
- Reducing bounce rate — Accurate previews set correct expectations
- Driving social signals — Higher engagement → more shares → more backlinks
- Improving Dark Social attribution — When links are shared privately (WhatsApp, Slack, iMessage), OG tags are the only data your brand controls
Schema Markup: The Next Level
While OG tags control social previews, structured data (JSON-LD schema) controls how search engines and AI assistants understand your content:
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "Article",
"headline": "Your Article Title",
"image": "https://yoursite.com/og-image.jpg",
"author": {
"@type": "Person",
"name": "Author Name"
},
"datePublished": "2026-05-10",
"publisher": {
"@type": "Organization",
"name": "Your Site Name"
}
}
</script>This is becoming increasingly important for GEO (Generative Engine Optimization) — optimizing for AI-powered search engines like Perplexity, ChatGPT Search, and Google AI Overviews.