PDF files by using a PDF converter. Simply open the image with a viewer, click on How to save image to pdf format and select the PDF printer to convert the image to PDF.
PDF, you need an image viewer that has a print option and can open that specific image format. While Windows delivers with its operating system a default image viewer called Windows Picture and Fax Viewer, there are a lot of other image viewers that support printing, to name a few popular ones: Microsoft Office Picture Manager, Picasa and Irfanview. If you need to convert several images at once to a single PDF, use Windows Explorer to select all the images for conversion, right-click on one of them and choose the Print option.
On Windows 8 however, by default Windows 8 will automatically open photos using the new Photo App and it will take you out of the desktop environment. You can circumvent that by right clicking an image and selecting Open With and from the list of programs choose Windows Photo Viewer. Open the image in Windows Photo Viewer. P” to open the “Print Pictures” window.
Select novaPDF from the available dropdown list and choose paper size and quality. Optionally you can select multiple images at once and print them using predefined layouts. Additional novaPDF settings can be accessed by clicking “Options” and “Printer Properties”. By default, Picasa does not have a direct PDF conversion option available.
Since it does contain a print option instead, you can use it to convert images to PDF by virtually printing your images using a PDF creator. In the Print window you have to select novaPDF from the Printer Settings section.