Social Card
Social Media Card
A rich preview shown when a URL is shared on social platforms, containing title, description, and image.
技術的詳細
Social Card was created by Facebook (now Meta) and is now supported by most social platforms. The four required properties are og:title, og:type, og:image, and og:url. Images should be at least 1200x630 pixels for high-resolution displays; images below 600x315 appear as small thumbnails. og:image must be an absolute URL — relative paths are not supported. Facebook caches previews aggressively; use their Sharing Debugger to clear the cache and preview changes.
例
```html <!-- Open Graph meta tags for link previews --> <meta property="og:title" content="Convert PDF to Image"> <meta property="og:description" content="Free browser-based PDF to image converter. No upload required."> <meta property="og:image" content="https://peasytools.com/og/pdf-to-image.png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="630"> <meta property="og:type" content="website"> ```
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