If all images are same DPI, you'll get a uniform printing. Portable Document Format (PDF) is a file format used to present and exchange documents reliably, independent of software, hardware, or operating system. Ideally, 150 DPI should be good enough for images of 2500X2500 pixel - on a 17 inch monitor set to 1366x768 resolution.īTW, the PDF file shall print each page at the specified DPI of that page. If in the new PDF pages are too small to read on-screen without zooming, again - redo DPI adjustment, this time put a lower DPI value. If in the new PDF images are too big - redo the DPI setting for each to a higher value. Open relevant image print control dialog box and set a suitable uniform DPI info for all the images. To avoid this, open each image in an image editor like GIMP or Photoshop. The good news is - it's only a display issue - and can be fixed easily.Īn image with a higher DPI value would display smaller in a PDF (displays at the 'print-size' of the image). The page sizes are looking different in your PDF because the images were originally set to different DPI (even if images are identical HxW in pixels).

Rotate 1 page in adobe acrobat x1 pro