Open Graph Preview & Generator

When a link is shared, the receiving platform builds its preview card from the page's Open Graph and Twitter Card tags — and a missing image or thin description quietly costs clicks on every share. This tool lets you draft that metadata with immediate visual feedback: as you fill in the form, styled preview cards approximating X/Twitter, LinkedIn, Facebook, and a universal layout update live, so you see the card people will encounter before the page ships.

The form covers considerably more ground than the basic tags. Alongside title, description, URL, and image, it handles the site name, locale, content type, all four Twitter card types, separate site and creator handles, image dimensions and alt text, a theme color, and the article-specific properties — published and modified times, author, section, and tags. Four quick templates (blog post, product page, SaaS landing, documentation) pre-fill realistic values to adapt, and an eight-point readiness checklist scores the metadata, flagging missing images, overlong titles, invalid URLs, and absent alt text with specific guidance for each.

Output comes in three copyable blocks — the full head snippet, Open Graph tags only, or Twitter tags only — with values properly HTML-escaped. Two honesty notes the tool itself displays: previews are realistic approximations, since each platform renders and caches cards its own way, and after publishing you should still verify with the platforms' own debuggers. Your form data stays in the browser; the only network activity is your own browser fetching the preview image you point it at.

The form state drives three things in parallel. First, the snippet builder assembles the tag blocks: basic tags (title, description, canonical, theme color), the Open Graph set, and the Twitter set, HTML-escaping every value and omitting tags whose fields are empty. Article properties are included when the content type is article or when any article field is filled. Twitter handles are normalized so a missing or doubled @ cannot produce a malformed tag.

Second, the preview components render your values into card layouts modeled on each platform's conventions — image on top at the 1.91:1 ratio, then site name, clamped title, and clamped description. The image is loaded by your browser directly from the URL you provide, which doubles as a reachability test: if the preview cannot show it, crawlers may struggle too.

Third, the validator runs its eight checks and averages them into the readiness score. Length checks use practical editorial ranges (40–70 title, 120–200 description); URL checks require a parseable http or https address; the dimensions check looks for roughly the 1.91:1 ratio at 1000 pixels or wider.

The previews are realistic approximations, not exact reproductions — platforms change layouts, crop images differently, and cache aggressively, so the published card can differ from any simulation. The readiness checks are editorial heuristics, not platform requirements. The tool cannot verify crawler access to your image (only that your browser can load it) and does not fetch or audit existing pages — paste values in rather than pointing it at a URL. Generated markup covers sharing metadata; structured data and search-specific tags are the JSON-LD Schema Generator's and Meta Tag Generator's territory.

Snippet generation, validation, and previews all derive from one form state with memoized builders. Tag values pass through an HTML-escape function (ampersands, quotes, angle brackets), empty fields are omitted rather than emitted blank, and handles are normalized to a single leading @. URL validity is checked with the browser's URL parser restricted to http/https. The readiness score averages the eight checks (full credit for good, half for informational). The preview image is rendered with a plain img element pointing at your URL and hides itself on load error. The component is entirely client-side.

This tool vs. the Meta Tag Generator

Both produce paste-ready head markup — pick by how much control and feedback the page deserves.

Marketers and founders preparing launch pages where the shared card is part of the campaign; bloggers and editors who want article metadata (dates, authors, tags) done properly; developers who prefer copying escaped, complete markup over remembering property names; and SEO or content teams auditing why a page shares badly. For a quick standard page, the simpler Meta Tag Generator may be all you need.