Many times you are facing a file that you want to change the format of and you have to go to your computer. From your Android phone you can also change the format of a certain document. You can convert PDF files into image. Pass JPEG or PNG practically any type of document: digital books, comics or PDFs, no matter how many pages it has.
To change the format you can use the application X2IMG - PDF / CBZ / EPUB to JPG, available for free in the Google Play Store. Simple use with many possibilities. You can change any format to JPG or PNG: ebooks in EPUB, PDF, CBZ format ... Formats used for text documents, digital books or comics that will allow you to have an image of the file without the need for a screenshot and without complications.
Once you download the application, just click on the '+' button in the lower right corner and search for a file in the phone memory. Find the file you want and the application will convert it into JPEG or PNG format. You can choose the output format between JPG and PNG. You can also choose the quality of the JPG depending on what its use is going to be, with options ranging from 10 to 100, ten by ten, depending on what you need the quality to be. What's more, You can choose the output image scaling from x0.5 to x3.0.
The input file will be converted whole to image, page by page. If the PDF or EPUB that you want to convert into PNG has 150 pages, the images will be saved one by one in the phone's gallery and you will have to find it if you want a specific page. You can choose a single page within the input file if you download the paid version of the application, which can be found in the Google Play Store for 3,49 euros and that will allow you to select only the pages you want go to image without having to search through all of them once the conversion is done.