What is a Schema Markup Generator?
Structured data tells search engines what a page is rather than leaving them to infer it from the text. JSON-LD in the head is the format Google recommends, and it is fiddly to write by hand.
Pick a type, fill in the fields you have, and copy the finished script tag. Address fields are assembled into a proper PostalAddress, and a product price becomes a nested Offer.
Two rules matter more than the markup itself. Everything you declare must be true, and for FAQ markup every question and answer must also be visible on the page. Marking up content that is not there is a policy violation rather than a shortcut, and it is the usual reason a rich result quietly disappears.
Frequently asked questions
Where does the code go?
Inside the head of the page it describes, as a script tag with type application slash ld plus json. One block per page is the usual approach, and related entities can be linked with an @id.
Will this get me rich results?
It makes you eligible, which is not the same as guaranteed. Google decides whether to show a rich result, and correct markup on a page that does not otherwise deserve to rank will not produce one.
Do FAQ questions need to be on the page?
Yes, and visibly. Google requires the question and answer text in the markup to appear on the page itself. Hidden FAQ markup is a policy violation.
Should I fill in every field?
Only the ones you genuinely have. Empty and invented values are worse than absent ones, and the tool leaves out anything you have not filled in.