Share cards: how links look on LinkedIn, Facebook and Slack
When someone shares an article link, the platform fetches the page and builds a card from it: title, description, image and site name. mxAURA writes those tags into the page on your site.
The image
Facebook and LinkedIn show the large card (picture over the title) only for a landscape image about 1200 by 630. Anything else gets a small side thumbnail. So:
- A landscape hero at least 600 wide goes out as it is.
- A portrait or square image is served as a 1200 by 630 version: cropped with smart gravity for a photo, or letterboxed on the dark card colour when the article has Show whole image on, so a typeset cover keeps its words.
- The Social image slot on the article overrides the hero for sharing.
The editor tells you what will happen to the image you have.
The site name
The card names the site from the site's brand (Sites tab) or the account's default Brand Kit, then the account name. Set the Brand Kit's Company so cards say your company rather than the hub name.
Stale previews
Platforms cache cards. After changing an article's title, description or image, re-scrape in the Facebook Sharing Debugger or the LinkedIn Post Inspector. Slack keeps its cached preview per URL; add a throwaway query string to force a fresh one.
LinkedIn shows link posts from personal profiles as the small card regardless of the image. The large picture-over-text post comes from uploading the image itself with the link in the text.
Share buttons on the article page
With Enable social media share buttons ticked on an article, readers see four buttons by the byline.
- LinkedIn opens LinkedIn's post box with the article's long social post already in it, address included. With no long post it shares the address alone.
- X opens with the short post. With no short post it uses the title and the address.
- Facebook shares the address; Facebook does not accept text.
- Copy copies the address.
The reader can edit the text before posting. LinkedIn must already be signed in for the text to arrive.