DPI of a digital image is not necessarily the same as the DPI of a print made from that digital image. To make sure you will get a high quality print you usually need to change image DPI. The trick when changing image DPI is to do it without resizing your image in the process. You might want to change DPI while retaining the original digital resolution of the image. But is it possible? With ImageConverter Plus you can simply select the appropriate DPI setting of any supported output formats and get the desired result in seconds. Your image will not be resized, thus its quality will not be affected in any way. https://www.imageconverterplus.com/help-center/about-icp/user-interface/output-format