Can I make certificates for a whole class?

One at a time here. The API makes one per person from a list, a cent each, so 100 certificates cost about a dollar.

US Letter, landscape, ready to print or email.

Free tool

Certificate maker

Fill in the name and reason, download a printable PDF certificate. No signup.

Can I make certificates for a whole class?: One at a time here. The API makes one per person from a list, a cent each, so 100 certificates cost about a dollar.
What size is it?: US Letter, landscape, ready to print or email.
Is there a watermark?: No.