The simplest way to share files while also ensuring that they can’t be modified is to convert them into images. Applications like All to Image Jpg/Jpeg Bmp Tiff Png Converter have been developed to help you with this precise task.
As its name clearly suggests, it can convert files to a large variety of image formats, including JPG, JPEG, BMP, TIFF, PNG, GIF, TGA, RLE, EMF and WMF. I was more impressed by the number of file formats it can load and convert: DOC, DOCX, DOCM, PDF and RTF documents, TXT text files, XLS, XLSX and XLSM spreadsheets, PPT, PPTX and PPTM presentations, HTM and HTML files, or other image files. The fact that it can batch convert multiple files at once was also to my liking. Unfortunately, the interface is quite dull, contains spelling mistakes and can’t be customized. But not only that, it also failed to convert PDF files on a system where no Adobe PDF reading product is installed.
On a general note, I think All to Image Jpg/Jpeg Bmp Tiff Png Converter could use some improvements before I could recommend it with all my heart. At this moment, I think it should be tried only as a last resort.