About TwitterCard
TwitterCard is a small, independent site about one narrow thing: the meta tags that decide how a link looks when it is shared on X (Twitter) and the other apps that read the same tags. It offers five free tools that run entirely in your browser and a set of guides written for the people who actually wire those tags up.
What the site does
- Tools. A card meta tag generator, a head-tag inspector and preview, an image checker and resizer, an OG image maker and framework snippets. None of them upload what you enter, fetch other websites or need an account.
- Guides. Practical articles on card types, Open Graph fallbacks, image sizes, caching, robots.txt, platform setup and testing. Each one cites the documentation it relies on.
- Reference. A tag reference that lists every documented card tag with its limits and fallback.
How the guides are checked
Card behavior changes: X removed the Card Validator preview in 2022 and changed how link previews look in 2023 and 2024. Facts in the guides are checked against X's developer documentation and the other platforms' own documentation, and time-sensitive statements say when they were checked. When a source does not say something, the guides do not claim it. If you spot something out of date, please write to contact@twittercard.com.
Independence
TwitterCard is not affiliated with, endorsed by or connected to X Corp. "X" and "Twitter" appear because the markup is still called Twitter Card markup and its tags still start with twitter:. The preview mockups on this site are our own drawings, not screenshots, and use no X logos. The site carries no ads, affiliate links, analytics or tracking.
About this domain
The site was relaunched in 2026 under new, independent management. This site is not connected to any person or business previously associated with this domain. Some old addresses from earlier versions of the domain now point to the closest current page; old embed scripts answer with an empty script so they no longer do anything on the pages that still include them.
Free tools
Card Meta Tag Generator
Fill in a form, get twitter: and og: tags that match, and see a drawn preview in light or dark, desktop or mobile.
Card Preview & Meta Inspector
Paste a page's head HTML. See the card X would likely build, which tags it falls back to, and what is missing.
Card Image Checker & Resizer
Check a local image against card limits: ratio, pixel size, 5 MB, format. Crop to 2:1 or 1:1 and download.
OG Image Maker
Type a title, pick a template and colors, download a 1200x630 or 1200x675 PNG. Drawn on a canvas on your device.
Framework Snippets
Card tags for plain HTML, Next.js, Astro, Hugo and WordPress (Yoast and Rank Math), filled with your values.