Spell checker for face book?

David & his pack of dogs

When compiling an email, I use the spell checker for office 365.  My question is, as stated in the subject line.  Is there a spell checker for face book?  I don’t want to create a word document then just cut and paste it into a face book post. There must be an easier way to check my spelling and grammar before posting to a social media such as face book or google plus.   


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