You can save your certificate in one of three ways. Option 1 will work for multiple browsers, while Options 2 and 3 will work on Chrome.
Option 1: Printing your certificate
Go to the menu, and choose print page.
On the left side in print options choose the Destination: Save to Google Drive (in Chrome) or Save as PDF (in other browsers).
Choose the Layout as Landscape.
Uncheck the Headers & Footers option.
Click the Save button.
Your Certificate will be saved as a PDF on your Google Drive or on your computer.
Option 2: Screen Capture (by Google)
Install this Chrome application from the link below. After installing, go to your certificate page and click the Screen Capture extension icon in your Chrome browser; you will be able to capture the whole page as an image and crop the image later if required.
https://chrome.google.com/webstore/detail/screen-capture-by-google/cpngackimfmofbokmjmljamhdncknpmg
Option 3: Awesome Screenshot: Capture & Annotate
Works the same as Option 2.
https://chrome.google.com/webstore/detail/awesome-screenshot-captur/alelhddbbhepgpmgidjdcjakblofbmceOption 1: Printing your certificate
Go to the menu, and choose print page.
On the left side in print options choose the Destination: Save to Google Drive (in Chrome) or Save as PDF (in other browsers).
Choose the Layout as Landscape.
Uncheck the Headers & Footers option.
Click the Save button.
add this between steps 3 & 4
"set MARGINS to NONE"
Works for me in both win 7 and Win 2003, BUT only using chrome, can't vouch for others