Every shared link's social meta tags: resolved, fetched, measured.

Paste a URL. Previewcard fetches the page, resolves every Open Graph and Twitter Card tag relative to it, fetches each referenced image, and reports its real HTTP status and pixel dimensions — platform by platform, tag by tag.

Illustration — use the live app to run a real check.

What the report looks like

url: https://example.com/article upstream: 200 (reliable)
title: "Example Article — A Deep Dive"

og:title ✓ present
og:description ✓ present
og:image ✓ resolved → https://example.com/hero.png (1200×630, 142KB, HTTP 200)
og:url ✓ present
og:type ✓ present
og:site_name ✓ present
twitter:card ⚠ present → "summary_large_image"
twitter:image ✓ resolved → (same as og:image)
twitter:title ✗ missing

1 of 10 required social tags missing.

How the check works

Fetch the page. Previewcard requests the URL with a 15-second timeout, following redirects. If the page cannot be reached, the report says so — no fabricated findings about tags.

Parse every meta tag. Every <meta property> and <meta name> is extracted. Tags are classified by platform: Open Graph (og:), Twitter Card (twitter:), or standard HTML meta.

Resolve image URLs. Relative og:image and twitter:image paths are resolved against the page URL. A relative path is the most common cause of a broken card — Previewcard catches it.

Fetch each image. Every referenced image is fetched. Its HTTP status, pixel dimensions (JPEG, PNG, GIF, WebP), and byte size are reported. A 404 image is reported as 404 — not silently ignored.

Report missing tags. Required social tags that are absent are listed explicitly. Previewcard never substitutes the HTML <title> and presents it as an Open Graph title — it reports what the page declares, not what a platform might fall back to.

What the checker does

Platform-by-platform reporting Results are grouped by vocabulary (Open Graph, Twitter Card, standard meta). Each platform's tags are listed together so you can see at a glance what each social network will use.
Image dimension verification Previewcard fetches the actual image and reads its width and height from the first bytes of the file. A 200×200 image when the platform expects 1200×630 is flagged — no guesswork.
Relative URL resolution An og:image set to /images/hero.png is resolved against the page URL. The report shows the full absolute URL and whether the image loads.
Upstream reliability flag If the fetched page returned a non-2xx status, the report notes that the tag values might be from an error page. Findings are marked as potentially unreliable.
Graceful error handling If the page times out, the domain does not resolve, or an image cannot be fetched, the report says so in plain terms. A network failure is never described as a finding about the user's tags.

Try it now

Paste any URL and see what its social meta tags contain — resolved, fetched, and measured.

Open the app