website for invitation cards, how to store images with text

Hi, I have problem to handle this task. I am designing a website of creating event invitation cards and sending those. For that i created page -- if user enters details(name, event date,host) in textboxes that text has to display on the image, for this i put image in div, used listitems to display entered text on image by using CSS and javascript. But my problem is how to save that image with text entered on it, to send it as invitation card to guests.