Did you participate in the recent Firefox Download Day campaign, which involves helping Mozilla create a new Guinness World Record, of 8,002,530 downloads within 24 hours.
If you did, then you should be proud of yourself. As part of the success, users can download the certificate from the website here. Simply insert your name, and there you can easily download the PDF format of the certificate.
Thank you, i have read this post while ago and I already fill the form entering my name. Thanks again I have a certification now.