How to preview OG tags from any URL
Paste an absolute https URL, run Fetch metadata, then review the merged title, description, image, and destination URL. Expand diagnostics to confirm status codes, final URL after redirects, and content type.
How Open Graph, Twitter Card, and fallback meta tags are chosen
For Facebook and LinkedIn-style previews we prefer Open Graph tags, then fall back to the title tag, meta description, canonical URL, and the first suitable body image when og:image is missing. For the X/Twitter-style preview we prefer twitter:title, twitter:description, and twitter:image when present, otherwise we fall back to Open Graph and then the same generic fallbacks.
Common metadata issues and how to fix them
Missing og:image is the most common share-quality issue—add a square or landscape image URL. Duplicate or conflicting tags, relative image URLs without a correct base, and long titles that get truncated are also frequent. Use the editor to test fixes before publishing.
How to export HTML meta tags or JSON
After a successful fetch (or after you fill required fields manually), use Copy HTML or Copy JSON, or download the .html and .json files. Values are escaped in the HTML snippet and the JSON includes source status for each supported field.