(P21)

Data type

External identifier

Statements

Facebook f logo (2019).svg
1,365 × 1,365; 358 bytes
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Key:contact:facebook
https://www.facebook.com/$1
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^https?:\/\/(?:www\.|m\.)?facebook\.com\/(?!pages\/|pg\/|profile\.php|home\.php)(?:groups\/|people\/|people\/)?([\w\d.-]+)
match everything after the domain name except if its a page (which has is own ID property) (English)
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^https?:\/\/(?:www\.|m\.)?facebook\.com/profile\.php\?id=(\d+)
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https://m.facebook.com/$1
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https://touch.facebook.com/$1
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https://mobile.facebook.com/$1
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https://www.messenger.com/t/$1
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https://unavatar.now.sh/facebook/$1
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https://www.facebook.com/search/top/?q=$1
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[\p{L}\d.-]+
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Constraints