OG Meta Tag Generator & Social Preview
Generate Open Graph, Twitter Card, and JSON-LD tags. Preview on Facebook, Twitter, LinkedIn, and Discord.
<meta charset="UTF-8"> <title>Free JSON Formatter & Validator — Format JSON Online | FreeToolHub</title> <meta name="description" content="Format, validate, and minify JSON instantly. 100% browser-based — your data never leaves your device. Free online JSON formatter with syntax highlighting."> <!-- Open Graph / Facebook --> <meta property="og:type" content="website"> <meta property="og:url" content="https://freetoolhub.org/json-formatter/"> <meta property="og:title" content="Free JSON Formatter & Validator — Format JSON Online | FreeToolHub"> <meta property="og:description" content="Format, validate, and minify JSON instantly. 100% browser-based — your data never leaves your device. Free online JSON formatter with syntax highlighting."> <meta property="og:image" content="https://freetoolhub.org/og-image.png"> <meta property="og:site_name" content="FreeToolHub"> <meta property="og:locale" content="en_US"> <!-- Twitter Card --> <meta name="twitter:card" content="summary_large_image"> <meta name="twitter:url" content="https://freetoolhub.org/json-formatter/"> <meta name="twitter:title" content="Free JSON Formatter & Validator — Format JSON Online | FreeToolHub"> <meta name="twitter:description" content="Format, validate, and minify JSON instantly. 100% browser-based — your data never leaves your device. Free online JSON formatter with syntax highlighting."> <meta name="twitter:image" content="https://freetoolhub.org/og-image.png"> <meta name="twitter:site" content="@freetoolhub"> <meta name="twitter:creator" content="@freetoolhub">
About this tool
Generate Open Graph, Twitter Card, and JSON-LD tags. Preview on Facebook, Twitter, LinkedIn, and Discord. Free meta tag generator — no signup, 100% browser-based.
What Are Open Graph Meta Tags?
Open Graph (OG) meta tags are HTML tags that control how your webpage appears when shared on social media platforms like Facebook, LinkedIn, and Discord. They define the title, description, image, and type of content that appears in the link preview card. Without OG tags, social platforms guess what to show — often resulting in missing images, wrong titles, or broken previews.
What Are Twitter Card Tags?
Twitter Card meta tags are similar to Open Graph but specifically for Twitter/X. The most common type is "summary_large_image" which displays a large image above the title and description. Twitter falls back to OG tags if Twitter-specific tags are missing, but adding them gives you more control over how your content appears in tweets.
Why Use JSON-LD Structured Data?
JSON-LD is Google's preferred format for structured data. It helps search engines understand your content type (article, product, website) and can enable rich results in search — like article publish dates, product prices, and breadcrumb navigation. This tool generates JSON-LD alongside your meta tags, giving you both social media and search engine optimization in one step.
Frequently asked
What image size should I use for OG tags?
The recommended OG image size is 1200×630 pixels with a 1.91:1 aspect ratio. This ensures your image displays correctly on Facebook, Twitter, LinkedIn, and Discord. Images should be under 8MB and in JPG, PNG, or WebP format. Smaller images may appear cropped or pixelated on some platforms.
Do I need both OG tags and Twitter Card tags?
Not strictly — Twitter falls back to OG tags if Twitter-specific tags are missing. However, adding Twitter Card tags gives you more control and ensures optimal display. The "summary_large_image" card type is recommended for most content as it shows a large image preview.
Where do I put these meta tags?
Place all meta tags inside the <head> section of your HTML document. If you're using a framework like Next.js, React, or Vue, use the framework's head management system (e.g., next/head, react-helmet) to add the tags dynamically. The JSON-LD script tag also goes in the <head>.
How do I test my OG tags?
After publishing, use the Facebook Sharing Debugger (developers.facebook.com/tools/debug/) to verify your OG tags. For Twitter, use the Card Validator (cards-dev.twitter.com/validator). This tool's built-in preview gives you a good approximation, but always verify with the official tools after deployment.
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