https://twittercard.com/guides/ Practical guides to X Cards: card types, twitter: vs og: tags, image sizes, caching, Twitterbot and robots.txt, CMS setup and testing without the validator. en Wed, 11 Nov 2026 00:00:00 +0000 https://twittercard.com/guides/twitter-vs-og-tags/https://twittercard.com/guides/twitter-vs-og-tags/Wed, 11 Nov 2026 00:00:00 +0000How X chooses between twitter: and Open Graph tags, which twitter: tags have no og: fallback, name vs property, and the shortest head that still works. https://twittercard.com/guides/robots-txt-twitterbot/https://twittercard.com/guides/robots-txt-twitterbot/Wed, 11 Nov 2026 00:00:00 +0000How Twitterbot follows robots.txt, the rule that unblocks it on a locked-down site, and the firewall and bot-protection settings that break cards without warning. https://twittercard.com/guides/cms-setup/https://twittercard.com/guides/cms-setup/Wed, 11 Nov 2026 00:00:00 +0000How Shopify themes, the Next.js Metadata API and Astro output X (Twitter) Card tags, where to set the image and title, and the mistakes specific to each. https://twittercard.com/guides/card-types/https://twittercard.com/guides/card-types/Wed, 11 Nov 2026 00:00:00 +0000The four X Card types side by side: summary, summary_large_image, player and app, with required tags, image rules and the status of each in 2026. https://twittercard.com/guides/image-sizes/https://twittercard.com/guides/image-sizes/Wed, 11 Nov 2026 00:00:00 +0000Every X Card image rule in one place: 2:1 and 1:1 ratios, minimum and maximum pixels, the 5 MB limit and formats, plus Open Graph sizes for other platforms. https://twittercard.com/guides/card-not-showing/https://twittercard.com/guides/card-not-showing/Wed, 11 Nov 2026 00:00:00 +0000Twelve causes of missing or wrong X (Twitter) cards, in the order worth checking: tags, image URL and size, robots.txt, redirects, firewalls and the card cache. https://twittercard.com/guides/what-are-x-cards/https://twittercard.com/guides/what-are-x-cards/Wed, 11 Nov 2026 00:00:00 +0000X Cards are the link previews X builds from a page's meta tags. How they work, what Twitterbot reads, which tags you need and how to see yours. https://twittercard.com/guides/link-previews-other-platforms/https://twittercard.com/guides/link-previews-other-platforms/Wed, 11 Nov 2026 00:00:00 +0000Which tags LinkedIn, Facebook, Slack, Discord and Apple Messages read for link previews, their image sizes and caches, and how to refresh each one. https://twittercard.com/guides/test-without-validator/https://twittercard.com/guides/test-without-validator/Wed, 11 Nov 2026 00:00:00 +0000The Card Validator stopped showing previews in 2022. A practical testing routine for X Cards today: composer preview, markup checks, curl, and testing before launch. https://twittercard.com/guides/refresh-card-cache/https://twittercard.com/guides/refresh-card-cache/Wed, 11 Nov 2026 00:00:00 +0000Why X keeps showing an old card image or title, how long the card cache lasts, and the reliable ways to get a fresh card without the old validator. https://twittercard.com/guides/card-titles-descriptions/https://twittercard.com/guides/card-titles-descriptions/Wed, 11 Nov 2026 00:00:00 +0000X documents 70 characters for card titles and 200 for descriptions. How those limits play out in the current layout, and how to write text that survives truncation. https://twittercard.com/guides/image-alt-text/https://twittercard.com/guides/image-alt-text/Wed, 11 Nov 2026 00:00:00 +0000How twitter:image:alt and og:image:alt work, the 420-character limit, what to write for photos, charts and title cards, and how plugins handle it. https://twittercard.com/wordpress/https://twittercard.com/wordpress/Wed, 11 Nov 2026 00:00:00 +0000Set up X (Twitter) Cards in WordPress with Yoast SEO, Rank Math or a few lines of PHP, choose large image cards, and fix the usual caching problems.