Social share previewer

Paste your head HTML or type the values, and see how the link unfurls on X, Open Graph, LinkedIn, Slack, Discord and WhatsApp. Each card is labelled with whether its spec is verified or inferred, because several of these platforms no longer publish one.

Paste your <head> HTML optional, fills the fields below

Title (og:title)

Description (og:description)

Image URL (og:image)

Page URL (og:url)

Site name (og:site_name)

Card type (twitter:card)

Parsed in your browser. The only outbound request is your own preview image loading; your tags are never sent anywhere.

A social preview tool shows how a shared link will look before you post it. Paste your Open Graph and X card tags and this one renders each platform's card in your browser, at 2026 sizes, with a checklist of what is missing or oversized. It never fetches your page, so it works on localhost and staging, and nothing you paste leaves the browser.

The Twitter Card Validator is gone, so this replaces it

X shut down its official Card Validator at cards-dev.twitter.com/validator in 2022 and never shipped a replacement. By 2026 it had removed the entire Cards documentation tree as well, so there is no first-party way left to check a card. That is the gap this tool fills. Because X publishes no current spec, every X figure here is the last widely-cited public spec, marked inferred rather than verified. Facebook and WhatsApp do publish current specs, so their cards are marked verified. Slack publishes none at all.

What each platform actually reads

Most platforms read Open Graph tags first and treat X's twitter: tags as a fallback or ignore them. WhatsApp and LinkedIn use only Open Graph. Slack reads whichever of Twitter Card or Open Graph appears first in your HTML, and it only fetches the first 32 kilobytes of the head, so keep the tags near the top. Expand a card's source note to see what is verified for that platform. Specs were checked on 2026-07-06.

Common questions

Is there a Twitter Card Validator in 2026?

No. X retired its official Card Validator at cards-dev.twitter.com/validator in 2022 and never replaced it, and by 2026 it had removed the entire Cards documentation too. This tool previews the card in your browser from your own tags instead.

Why might my real X card look different from the preview?

Because X no longer publishes a Cards spec, and since October 2023 it strips headline text from link cards on composed posts. The X figures here are the last known public spec, labelled as inferred rather than official.

Do I need separate twitter: tags as well as og: tags?

Usually not. twitter:title, twitter:description and twitter:image fall back to their og: equivalents. The one tag that matters on its own is twitter:card, which chooses the layout. WhatsApp and LinkedIn read only Open Graph tags.

Does this work on localhost or a staging site?

Yes. It parses the tags you paste or type in your browser and never fetches your URL, so it works on localhost, staging and pre-publish drafts. The only outbound request is your own preview image loading.