This can be accomplished in many ways. Here are a few ideas to get you started:
- Avoid printing the document directly from your browser. Web browsers intentionally ignore pixel densities because images work differently on the web than they do when they are intended for print. Even if the image specifies 600 pixels/inch, browsers will display it 1:1, pixel-to-pixel.
- If you’ve got an image manipulation program on-hand such as GIMP, Photoshop, Paint.NET, etc., simply open the file and hit ‘print.’ These more advanced programs will properly detect the pixel density and print the card in business-card-size.
- Open the certificate in your favorite .pdf reader. Hit ‘print.’ When the print dialog appears, look for an option to constrain or alter the sizing of the printed document. Change the sizing to 2″ in height and 3.5″ in width and hit print.