On the Start page, you can see the option 'Merge PDF'. You may also find some important PDFs such as a contract, in which text and images are too faint to recognize. Click on 'Merge multiple files into a single PDF file' and then click 'Close'. Here are some useful methods to make PDFs darker from the article. I can change the background of a given PDF file and make the text white and background black which is so much easier on the eyes. This will make the image appear darker when printed. 6 hours ago Step 1: Open the PDF file with PDFelement Right-click the file you're about to darken and go to 'open with', choose PDFelement, the file will be open on PDFelement. You can also collaborate and share PDF files using the app. Next, in the dialog box, select the, Tap anywhere on the screen to bring up the mini toolbar. At the top of the dialog observe 'Image Editor'. Support for Apple's new Dark Mode in Mac OS would be very nice too: Can you complete the black skin? Clicking 'Move Up' or 'Move Down' will move the files in this list up or down the list. It also allows you to add files and folders to the list. Save the printed file to your computer as a new PDF file. Pick the color and thickness of the highlight. Here is the detailed process to darken a PDF via Printer.

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