developer.mozilla.org Social Share Preview

50/100
Poor
3 fixes recommended

developer.mozilla.org has been validated across all 6 major social platforms. The current preview headline reads "MDN Web Docs". A description is set but no image - meaning the preview will render without a visual. Overall, developer.mozilla.org's setup scores 50/100 against cross-platform best practices.

Previews across all platforms

𝕏

Twitter / X

summary_large_image

developer.mozilla.org

MDN Web Docs

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs...

summary (active)

developer.mozilla.org

MDN Web Docs

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs...

f

Facebook

Large card (image ≥ 600px wide)

developer.mozilla.org

MDN Web Docs

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progre...

Compact card (image < 600px wide)

developer.mozilla.org

MDN Web Docs

The MDN Web Docs site provides information about Open Web technologies including...

G

Google Search

Search result

developer.mozilla.org

developer.mozilla.org/en-US/

MDN Web Docs

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.

in

LinkedIn

MDN Web Docs

developer.mozilla.org

#

Slack

developer.mozilla.org

MDN Web Docs

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.

◈

Discord

developer.mozilla.org

MDN Web Docs

The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.

Analysis

developer.mozilla.org's social setup currently has 1 error and 2 warnings that affect how it renders across social platforms. The most impactful fixes are listed below - they range from missing required tags to image dimensions that will be cropped or rejected by specific platforms.

In particular: no social share image found; no og:title - falling back to <title> tag; missing og:type tag. Each of these has a one-line fix in the recommendations panel above.

Frequently Asked Questions

No - developer.mozilla.org does not currently set an `og:image` or `twitter:image`. social platforms will fall back to extracting an image from the page or render no preview image at all.

See developer.mozilla.org on a specific platform

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