X still honors Twitter Card meta tags such as twitter:title, twitter:description, and twitter:image. A Twitter card preview helps you judge how those fields combine with the large image variant before a tweet goes live— especially important when headlines must fit beside political or stock tickers in dense timelines.
SmartFlexa renders a neutral “summary large image” style block beneath the Facebook-style mockup so you can compare crops side by side. Open Graph values often backfill Twitter when Twitter-specific tags are absent, so editing both in one workspace reduces drift. For full tag generation, pair this page with the Twitter card generator and the main Open Graph preview tool.
Remember that X may cache aggressively; after deploys, use their card validator to refresh what crawlers store for your domain.