Preview the message, not every platform pixel
Social networks crop and render cards differently and may cache old metadata. Use the preview to judge hierarchy, title length and image composition rather than expecting identical rendering everywhere.
Use an image built for cropping
Keep essential text and logos away from extreme edges because card crops can vary by surface and device.
Match Open Graph URL and canonical intent
The shared URL should normally identify the page represented by the card. Avoid misleading images or copy that describe a different destination.
Test after deployment
Platforms often cache Open Graph data. Validate the public URL using the platform's own debugger or refresh workflow when a critical campaign changes.