OGImageSize - Free OG Image Size & Open Graph Tools

OGImageSize is a free suite of web-based tools for creating, validating, and previewing Open Graph social previews to ensure shared URLs display correctly on platforms like Facebook, X/Twitter, LinkedIn, Slack, and Discord.

What is OGImageSize?

OGImageSize is a set of five free tools that work together to solve Open Graph social preview problems. It takes a URL or image as input and produces a validated social card with correct metadata, image dimensions, and HTTPS checks. The tools run entirely in the browser with no login required, built for SEO teams and content creators.

Key Features

• OG Image Size Guide — Reference the recommended 1200×630 px baseline, platform-specific crop zones, and safe zones to avoid text clipping.
• OG Image Generator — Create a 1200×630 PNG from fixed templates, then copy the generated HTML meta tags and preview the final URL directly.
• Open Graph Preview — Check a live URL’s og:title, og:description, og:image, HTTPS status, and platform cache state in a single workflow.
• OG Image Tester — Run a diagnostic pass that checks og:image dimensions, HTTPS, image response codes, Twitter card tags, and common preview blockers.
• Meta Tags Generator — Generate copy-ready HTML meta tags, Twitter card tags, and Next.js metadata tags from one form, with explicit width and height.

Who is it for?

• SEO specialists — Validate that shared links from their site render with correct title, description, and image on every major social platform.
• Content marketers — Preview how a campaign URL will look on Facebook, LinkedIn, or Slack before publishing the post.
• Web developers — Debug missing og:image dimensions, relative URLs, or stale platform caches that break social previews.

What can you do with OGImageSize?

• Check a URL before sharing: Enter https://example.com/product-launch and see a live preview of how the card renders, along with an issue checklist covering absolute image URLs, HTTPS, and cached content.
• Generate a compliant image: Use the 1200×630 generator to produce a PNG that fits the standard 1.91:1 card aspect ratio, then copy the corresponding Open Graph tags.
• Diagnose a broken preview: Run the OG Image Tester to pinpoint why a shared link shows a blank or cropped card — missing dimensions, non-HTTPS image, or missing Twitter card tags.

How does it work?

The site presents a five-step workflow: check the image size, generate the image, copy the meta tags, preview the final URL, and fix any issues. Each tool is linked to the next so you can move from a size lookup to a generated card to a validated share link without leaving the page.

Pricing

All tools are free and require no login. The first version is designed as free, indexable, no-login utilities.

FAQ

What size should I use for most OG images?

Use 1200×630 px as the default Open Graph image size. This gives a 1.91:1 aspect ratio that matches most platform cards and reduces accidental edge cropping.

Is OGImageSize free?

Yes. All five tools — size guide, image generator, preview checker, tester, and meta tags generator — are free and require no account or login.

Do I need meta tags if I already have an image?

Yes. Social platforms require the image URL, title, description, and often width and height tags to render a reliable preview. An image alone is not enough.

What platforms does it support?

The tools check compatibility with Facebook shared link cards, X/Twitter large summary cards, LinkedIn article previews, Slack unfurls, Discord link embeds, and generic Open Graph crawlers.

How do I fix a broken preview?

Use the OG Image Tester to identify missing tags, non-HTTPS images, or stale caches. The checklist also flags relative URLs and dimensions below the 200×200 minimum for most platforms.