Free, no sign-up
Open Graph and social preview checker
Paste a URL to see the card people get when they share it, and the tags to add when the image, title or description is missing.
This tool checks once. The X / Twitter Agent works on it every day.
Meet the X / Twitter Agent in Xicmo
Questions people ask
What image size works everywhere?
1200 by 630 pixels, under 5 MB, with the important part centred. X, LinkedIn, Facebook and Slack all crop it well.
Why does LinkedIn show an old image?
LinkedIn caches previews. After changing the tags, refresh it with LinkedIn's Post Inspector.
More free tools
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