What is an Open Graph meta tag generator?
Open Graph is a protocol, originally introduced by Facebook, that lets any webpage describe itself to social platforms with a handful of <meta property="og:..."> tags — a title, description, image, URL and content type. X/Twitter reads those same tags as a fallback but prefers its own parallel twitter:* tags, especially twitter:card, which decides whether a shared link renders as a small square thumbnail or a full-width image card. This generator writes both tag sets correctly in one pass, with attribute escaping handled for you, and renders a live approximation of the resulting card on five platforms so you can catch a truncated title or a badly cropped image before a colleague or customer ever sees it in the wild.
Why the live preview matters more than the tags themselves
Getting the meta tag syntax right is the easy part — most frameworks and CMSs generate it automatically. The part that actually breaks link shares is content that looks fine in a form field but gets truncated, squeezed, or cropped once a platform lays it into its own card template: a 90-character title that Facebook cuts to "...", a portrait image that LinkedIn's 1.91:1 crop chops in half, or a missing twitter:card tag that silently downgrades a wide banner image to a small square thumbnail on X. This tool checks your title and description length against each platform's real truncation point as you type and warns before you publish, not after someone screenshots a broken share and sends it to you.
Two real examples
Example 1 — Blog post (safe lengths)
Input:
Title: "10 SQL Indexing Mistakes That Slow Down Production" (50 chars)
Description: "The most common indexing mistakes we've seen in production
Postgres databases, and how to fix each one in under
an hour." (137 chars)
URL: https://example.com/blog/sql-indexing-mistakes
Image: https://example.com/og/sql-indexing.jpg (1200x630)
Type: article · Twitter card: summary_large_image
Output (excerpt): <meta property="og:type" content="article"> <meta property="og:url" content="https://example.com/blog/sql-indexing-mistakes"> <meta property="og:title" content="10 SQL Indexing Mistakes That Slow Down Production"> <meta property="og:description" content="The most common indexing mistakes we've seen in production Postgres databases, and how to fix each one in under an hour."> <meta property="og:image" content="https://example.com/og/sql-indexing.jpg"> <meta name="twitter:card" content="summary_large_image"> <meta name="twitter:title" content="10 SQL Indexing Mistakes That Slow Down Production"> Result: no warnings — title and description fit every platform's card without truncation, image ratio is exact.
Example 2 — Product page (title too long)
Input:
Title: "The All-New Ultra Premium Ergonomic Ambidextrous Wireless
Gaming Mouse With RGB And 12 Programmable Buttons" (107 chars)
Description: "Buy now." (8 chars)
Image: https://example.com/product.png (600x600, square)
Type: product · Twitter card: summary_large_image
Output warnings: ⚠ Title is 107 characters — Facebook/LinkedIn will truncate around 60-65, X/Twitter around 70. Shorten to the core product name. ⚠ Description is only 8 characters — most platforms show 1-2 lines; add a real sentence so the card doesn't look broken/empty. ⚠ Image is 600x600 (1:1) — summary_large_image expects ~1.91:1 (e.g. 1200x630); a square image will be cropped or letterboxed on Facebook/LinkedIn/Slack. Result: tags are still generated and valid, but the tool flags all three issues inline so they get fixed before publishing, not after.
How to use this tool
- Paste your title, description, canonical URL and image URL into the form.
- Watch the character counters — green is safe, amber means a platform will likely truncate it.
- Switch between the five platform tabs to see how the card actually lays out on each one.
- Copy the generated tags, or download them as a standalone
.htmlsnippet, and paste them into your page's<head>. - After publishing, re-scrape the URL in each platform's own debugger (Facebook Sharing Debugger, X Card Validator, LinkedIn Post Inspector) since they cache the first fetch.
FAQ
What is the ideal Open Graph image size?
1200x630 pixels at a 1.91:1 aspect ratio is the safe default that renders sharp and uncropped on Facebook, LinkedIn, Slack and Discord. Twitter's summary_large_image card uses the same 1.91:1 ratio but can go as small as 300x157; below that it falls back to a small square "summary" card. Keep the file under 5MB and use JPG, PNG or WEBP served over HTTPS, since some crawlers refuse insecure or oversized images.
How long should an og:title and og:description be?
Keep og:title under about 60 characters and og:description under about 155-160 characters. Facebook and LinkedIn truncate around 60-65 characters for the title and 155-200 characters for the description depending on device; X/Twitter truncates its own twitter:title around 70 characters. This tool checks your input against those thresholds live and flags text that will get cut off with an ellipsis on any of the five previewed platforms.
Do I need separate Twitter Card tags if I already have Open Graph tags?
X/Twitter reads standard og:title, og:description and og:image tags as a fallback, but it only picks the large-image card layout if you explicitly add twitter:card set to summary_large_image, plus twitter:title, twitter:description and twitter:image. Without an explicit twitter:card tag, X defaults to a small square "summary" card even if your Open Graph image is a wide banner, which usually looks worse. This tool always emits both sets so you control the layout on every platform.
Why does my link preview show an old title or image after I update the page?
Most platforms cache the Open Graph tags the first time a URL is shared and only re-scrape after a delay or a manual refresh. Facebook has a Sharing Debugger with a "Scrape Again" button, X/Twitter's Card Validator re-fetches on demand, LinkedIn's Post Inspector does the same, and Slack/Discord typically refresh after roughly 24 hours or when the URL is unfurled again in a new channel. Updating the meta tags alone does not retroactively fix previews already cached by those platforms.
Does this generator fetch or crawl my live URL?
No. You type the title, description, image URL and page URL directly into the form; nothing is fetched from your server or from social platforms. The one exception is your own browser loading the image URL you provide into a plain <img> tag to render the preview, which is the same thing that happens when you paste an image link into any web page — no network request is made to a Wayne server, and no analytics track what you type.
What is the difference between og:type website and article?
og:type tells crawlers what kind of object the page represents and can change which extra tags are expected. "website" is the safe default for homepages, tools and landing pages. "article" signals a blog post or news piece and pairs well with article:published_time and article:author if you add them separately; some platforms use og:type to decide whether to show a publish date or author byline on the card. Getting it wrong rarely breaks the preview outright, but "article" on a non-article page can trigger a date badge that looks out of place.
Can I use this for a Next.js or other framework's metadata config?
Yes. The generator outputs plain HTML meta tags, which you can paste directly into a static <head> or translate one-to-one into a framework's metadata object — for example Next.js App Router's generateMetadata openGraph and twitter fields map directly to the og: and twitter: properties shown here, since the underlying protocol tags are identical regardless of how your framework renders them.