DevCoreTools

Open Graph / Meta Tag Previewer

Paste HTML meta tags to preview Open Graph, Twitter Card, and search snippet metadata locally in your browser.

HTML head markup

Paste a full document, head block, or just title, link, and meta tags.

Processed locally in your browser Limit HTML text. Your input is processed in your browser and is not uploaded or sent to a server. Avoid pasting production secrets, access tokens, private keys, passwords, or sensitive customer data unless you understand the risk.
0 input characters0 fields found0 missing0 warnings

Metadata previews

Approximate search, Open Graph, and Twitter/X cards from parsed tags.

Waiting for input0 extracted fieldsNo URLs or images fetched
Metadata previews appear here.

Load a sample or paste HTML head markup to inspect social cards, search snippets, extracted values, duplicates, and common SEO issues.

Open Graph and meta tag guide

Inspect the metadata that search engines, link unfurlers, chat apps, and social platforms often use when they summarize a page.

Open Graph tags

og:title, og:description, og:url, and og:image give social platforms explicit card content instead of relying on page text.

Twitter Card tags

Twitter/X cards can use dedicated twitter:* tags, and often fall back to Open Graph values when title, description, or image tags are missing.

SEO meta tags

The page title, meta description, canonical URL, robots directives, and viewport tag help define search snippets, indexation hints, and mobile rendering behavior.

Preview limitations

These cards are approximations. Google, Facebook, LinkedIn, Slack, Discord, and X can crop, rewrite, cache, or ignore metadata differently.

Common mistakes

Duplicate tags, missing images, relative image paths, short descriptions, mismatched canonical and Open Graph URLs, and absent Twitter fallbacks are easy to miss.

Local text parsing

The tool reads pasted markup as untrusted text. It does not fetch live pages, resolve redirects, load images, render scripts, or execute inline handlers.

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FAQ

Does this previewer fetch my website URL?

No. It only parses pasted HTML text. It never fetches URLs, images, pages, redirects, or external resources.

Can I paste a full HTML document?

Yes. Full HTML documents, head sections, and meta-only snippets are accepted. The parser extracts known title, link, and meta tags from the inert document.

Are these official Google, Facebook, or X previews?

No. They are practical approximations for development review. Platforms may crop images, rewrite snippets, cache old tags, or apply their own validation rules.

Why does the recommended block include fallback tags?

Fallbacks reduce missing-card surprises when a platform prefers Twitter Card tags, Open Graph tags, or basic SEO title and description fields.

Does pasted HTML execute?

No. The tool does not render pasted HTML into the live page and does not execute scripts, event handlers, templates, forms, or inline markup.