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og:image is the Open Graph metadata field for an image representing a web page. A Twitter Card image refers to the image used in a card preview on X, commonly declared with twitter:image. Open Graph is a general metadata protocol; X Cards are a platform-specific preview feature. They are related, but their fields and rendering rules should not be assumed to be interchangeable.

How the two image fields differ

Aspect Open Graph image Twitter Card image
Purpose Part of Open Graph metadata, which describes a web page as a rich object in a social graph. The protocol identifies og:image as a required basic property. Image used in an X card preview, a platform-specific feature.
Metadata field og:image Commonly described as twitter:image; consult current X documentation before relying on its behavior.
Supporting image details The Open Graph specification documents optional image MIME type, width, height, secure URL, and alt text fields. Do not assume X interprets Open Graph image details in the same way. Current X-specific rules were not confirmed in the official documentation available for this article.
Rules and fallbacks The Open Graph specification permits multiple image values and gives the first value precedence in a conflict. Current image constraints and fallback behavior are not established here; verify them in accessible, current X documentation.

What Open Graph specifies

Open Graph’s basic metadata includes og:title, og:type, og:image, and og:url. The og:image value is the URL of an image representing the page. When you provide an image, the specification recommends an og:image:alt description of its content; it is not intended to be a caption. The specification also documents optional fields for image width, height, MIME type, and secure URL. See the Open Graph protocol specification.

Add Open Graph image metadata

Put the tags in the page’s <head>. This example uses documented Open Graph properties; the dimensions are illustrative, not a universal requirement or an asserted X recommendation.

<meta property="og:title" content="Page title">
<meta property="og:type" content="website">
<meta property="og:url" content="https://example.com/page">
<meta property="og:image" content="https://example.com/share-image.jpg">
<meta property="og:image:type" content="image/jpeg">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
<meta property="og:image:alt" content="A concise description of the image">

When you have more than one candidate image

Open Graph allows multiple og:image values. Put the preferred image first: the specification says the first value takes precedence when there is a conflict. Do not infer from this rule that X will select or prioritize images the same way.

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What to verify before adding X-specific tags

The legacy X card documentation URLs checked for this article redirected to a general X developer overview, so current X behavior could not be confirmed. Before publishing X-specific markup, consult accessible, current X card documentation for twitter:card, twitter:image, fallback behavior, image dimensions, supported formats, file-size limits, and image accessibility requirements. Avoid presenting older or third-party numeric recommendations as current X requirements without that confirmation.

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Check the preview before publishing

After deploying metadata, inspect the live page’s HTML source to confirm the intended values appear in the document head and that the image URL is publicly accessible. A screenshot can help check how the page itself looks, but a browser screenshot does not establish how X will interpret card metadata. For repeatable page captures, ScreenshotNeo is a screenshot API and MCP server; it removes supported consent banners, popups, and chat widgets before capture, and only clean shots are billed.

Or skip the browser setup

Make a one-call page capture with cURL:

curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com/page -o shot.webp

See the ScreenshotNeo API documentation for setup and options. Cookie banners, popups, and chat widgets are removed before the shot; bot checks, blank pages, and failed loads are never billed; an MCP server lets AI agents take screenshots; and 1,000 screenshots a month are free with no card, with paid plans starting at $5 for 3,000. Sign up for free.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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