Social Share Preview

Open Graph metadata describes a page for sharing: og:title supplies its title, og:description its summary and og:image its image address. Astrotor reads the public page through its server and uses these values to build an approximate WhatsApp card. If a tag is missing, it may fall back to the page title, description or Twitter metadata. A visible card therefore does not mean every Open Graph tag is present; check the findings too.

This tool shows the information Astrotor can read during the check. WhatsApp makes its own requests and controls the card layout, so a matching result is not guaranteed. If an old title or image persists, check the tags on the exact shared URL, including redirects, and whether the page or image is still served from a cache. After an image update, a new image URL can help distinguish the version; Astrotor cannot clear WhatsApp’s cache.

Start with the missing tags listed in the findings. Include the relevant Open Graph tags in the page’s initial HTML head, rather than adding them only with JavaScript. The image URL must open an actual image without a login; a share-page URL is not an image file. Astrotor accepts JPG, PNG, WebP, GIF and AVIF images up to 2 MB. That is this tool’s limit, not a statement of WhatsApp’s format support. Blocked requests or an oversized file can also prevent this preview from loading.