In this download, you’ll find a zip file containing French Happy Birthday Certificates in Color as well as Black and White! There will be 3 different formats you can choose. .PUB, .PDF and .JPG So 6 options within the zip file. You may customize the certificate by adding whatever text you need by adding a layer over the certificate with your favorite software editor. I have included a variety of formats for this reason.
Alternatively, you could just print and add text manually. It is in letter size format (landscape orientation) but most printers have the option to print half page sizes, so there are lots of printing options within this offering.