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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteFor a website link preview, start with a 1200 × 630 pixel landscape image, about 1.91:1. It is a practical cross-platform default, not a guarantee that every app will show the image the same way. LinkedIn’s sharing guidance is more specific: it recommends a 1.91:1 ratio, requires at least 1200 × 627 pixels, and sets a 5 MB maximum file size.
To make the image available to preview crawlers, set it deliberately in your page’s social metadata, keep the image publicly retrievable, and refresh a platform’s cached preview after changing it. The dimensions are only one part of getting a reliable result.
What size should a website social image be?
Use 1200 × 630 pixels as your starting canvas for a general website URL preview. That is approximately a 1.91:1 aspect ratio, close to LinkedIn’s recommended ratio. Current secondary guides also describe 1200 × 630 as a common cross-platform size, but it is not an official universal standard and does not ensure identical rendering in Facebook, X, LinkedIn, or other preview clients.
For LinkedIn specifically, meet its stated minimum of 1200 × 627 pixels, keep the file at or below 5 MB, and use the recommended 1.91:1 ratio. LinkedIn says images narrower than 401 pixels appear as thumbnails, so a small image is not a good substitute for a full-size link preview.
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These numbers concern an image fetched from a webpage when someone shares its URL. They are not a single specification for every kind of post or every platform. A service may crop, resize, omit, or cache the preview differently.
Why 1200 × 630 is a useful default—but not a universal rule
The 1200 × 630 recommendation is useful because it is widely repeated in current secondary guidance and its roughly 1.91:1 shape aligns closely with LinkedIn’s recommendation. It gives a designer a clear landscape canvas to work from without claiming that every platform has adopted precisely the same requirements.
Platform requirements can differ in dimensions, file limits, metadata, and cache-refresh behavior. The evidence available here establishes LinkedIn’s requirements directly; the 1200 × 630 recommendation for other preview clients is secondary guidance. Current official Meta and X specifications are not established here, so do not treat the common canvas or any platform-specific advice below as a binding current rule for those services.
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Platform guidance at a glance
| Context | Image guidance | What to keep in mind |
|---|---|---|
| General website link preview | 1200 × 630 px, approximately 1.91:1 | Common cross-platform advice in secondary guides, not a universal official standard. |
| LinkedIn website sharing | At least 1200 × 627 px; 1.91:1 recommended; maximum 5 MB | LinkedIn’s stated sharing guidance. Images below 401 px wide display as thumbnails. |
| X large-image card | Secondary guidance describes the summary_large_image card type and image guidance. |
Confirm current requirements in X’s official documentation before relying on them; the current official specification is not established here. |
| Facebook and other preview clients | Secondary guides commonly recommend 1200 × 630 px and Open Graph metadata. | Do not assume the same crop, fetch behavior, or cache handling across clients. |
How to add a social image to a webpage
Design or export the image at 1200 × 630 pixels, then declare it in the page’s metadata. A preview client fetches the webpage and uses metadata such as the Open Graph image property to identify the intended asset; it does not necessarily select the image that looks most prominent in the page body.
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- Create the asset. Export a landscape image at 1200 × 630 px. If LinkedIn sharing matters, ensure it is at least 1200 × 627 px and no larger than 5 MB.
- Make it retrievable. Place the image at a stable, publicly accessible URL. A crawler that cannot retrieve the file cannot use it, even if the metadata points to the right location.
- Set the page metadata. Put the Open Graph image declaration in the page’s
<head>and use the absolute URL of the image. For X large-image presentation, secondary guidance describes settingtwitter:cardtosummary_large_image; verify the current official X guidance before treating this as a requirement. - Publish and inspect the shared URL. Check the page in the platform’s preview or inspection tool where available. A correctly sized asset can still fail if the site blocks the crawler or the platform has an older version cached.
- Refresh after changes. If you replace the image or change metadata, request a fresh preview in the relevant platform tool when possible. Otherwise, an old cached preview may persist after the page has been fixed.
Example metadata for a page’s <head>:
<meta property="og:image" content="https://example.com/images/social-preview.jpg">
<meta name="twitter:card" content="summary_large_image">Replace the example image URL with the real, public asset URL. The Open Graph declaration is the relevant part for the general website preview described here. The X card declaration reflects secondary guidance, not a verified current official X requirement.
What to check in the image itself
Meeting the canvas dimensions does not guarantee that a preview will look right. Preview clients may render the asset in different contexts, and the available evidence does not establish one crop or display treatment for every service. Make important text and visual subjects easy to identify within the landscape frame, and inspect the actual preview in the platforms important to your audience.
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- Use the intended asset explicitly: set the page’s Open Graph image rather than relying on an incidental image elsewhere on the page.
- Check dimensions and file size: in particular, observe LinkedIn’s minimum dimensions and 5 MB maximum if LinkedIn sharing is in scope.
- Check accessibility to crawlers: the page or image host may prevent a platform from retrieving the file.
- Check the live preview, not only your exported file: metadata and cache state affect what a share displays.
- Do not assume one preview proves all previews: a platform-specific inspection confirms that platform’s fetched result, not every other app’s behavior.
Troubleshoot a missing or outdated preview image
The preview has no image
- Confirm that the page includes an Open Graph image declaration and that it points to the intended asset.
- Open the image URL directly and confirm it is publicly retrievable. LinkedIn notes that a website may block image retrieval; use LinkedIn’s Post Inspector to check a LinkedIn share.
- Check the asset’s dimensions and file size against the requirements of the platform where the preview is missing.
- Inspect the page with the platform’s preview tool where available. This helps distinguish a metadata problem from a crawler or cache problem.
The preview shows an old image
Preview services can retain fetched data. After changing the image or metadata, refresh the preview using the relevant platform tool where possible. Wix’s help guidance recommends entering the site URL in Facebook’s debugger after changing og:image. A change in your page’s source does not necessarily mean a platform has fetched it again.
The image appears as a small thumbnail
For LinkedIn, its help guidance says images narrower than 401 pixels display as thumbnails. Use an image that meets LinkedIn’s stated minimum of 1200 × 627 pixels if you want to satisfy its full-size sharing guidance.
The image is the right size but still does not appear as expected
Dimensions alone do not settle whether a platform can fetch or will select the asset. Check the declared image URL, crawler access, file limit, and cached preview. Then use the platform-specific inspection or refresh option instead of repeatedly changing image dimensions without evidence that size is the problem.
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Inspect the published page and its preview
A browser screenshot can help you inspect how a page looks after deployment, but it is not a substitute for the target platform’s preview inspector: a browser capture shows a page, while a social client determines its own URL-preview behavior. If you use screenshots for a visual check, compare the rendered page with the actual platform preview rather than treating the screenshot as proof of how every service will display the link.
Or skip the browser setup
ScreenshotNeo can return a screenshot of a URL with one GET request. It is useful for checking the published page visually; it does not replace social metadata validation or a platform’s preview inspector.
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Frequently asked questions
Is a social image the same thing as a page’s favicon?
No. The social image is the larger asset a preview client may use when a webpage URL is shared. A favicon is a separate, much smaller site icon and is not a substitute for the page’s declared preview image.
Can I use a different image for every page?
Yes. The relevant image metadata belongs to the page being shared, so pages can declare different preview assets. Ensure each page points to the asset intended for that URL.
Will changing the image update links that were already shared?
Not necessarily. A platform may be showing cached preview data. Refresh or inspect the URL through that platform where possible; existing shares can behave differently from a newly fetched preview.
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