Note: The original striped images above were generated from a 400px-by-341px image with 10px stripe spacing. The html canvas above will stretch/squish your images unless they are exactly that size. To see how your images will turn out after you overlay the transparency with the paper, check out the "full-size images overlayed" link that shows up below after the image is processed.
Want something to quickly test this out with? Download this image. Then select and drag it into the dropzone above.
Quick Tip: You don't have to print out the images after you make them to test them out. You can open them in Keynote/Powerpoint/Photoshop, reduce the opacity of one of the images to about 50%, and overlay that image on top of the other!
What the heck is going on? Check out the Moiré about page to learn more.