Right PDF Converter_Conversion methods
You can create PDFs from other formats within Right PDF Converter, which not only supports converting files to PDFs, but also merging multiple documents in the form of combining or overlaying. Furthermore, you can also package multiple files into one PDF portfolio. To adjust settings unique to each conversion method (except for Convert files to PDF documents), you can click the Option button to the left of the switch mode button in the upper right corner.
Right PDF Converter provides the following four ways to create PDFs:

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Convert. It converts all files on the list to PDF respectively.
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Merge. It converts and combines selected files into one PDF document. The converted files are arranged in the order they are placed in the file queue. The source files remain unchanged. To create bookmarks using file names of the source documents, click Option, select Add file names as Bookmarks, and then click OK.
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Overlay. It overlays contents of at least two selected source files into one PDF document. Click Option to specify where the logo is placed on every page of the generated document. Also, In the Overlay Setting dialog box, check Repeat the last page of the shortest document for page overlay to have all the pages overlaid when you are overlaying multiple files with different number of pages.
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Package. It converts multiple files and puts them into a PDF portfolio under the name of the first file in the file queue. Click Option to adjust cover sheet settings.