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Getting Started:
    1. Windows
  Text Menu
  (now with video!)
  2. Linux
  Env vars
  3. Mac OSX
  4. Help in other languages

FAQ | Forum

Customizing K2PDFOPT:
    1. K2pdfopt GUIs
    2. Disabling the Windows GUI
    3. The interactive menu
    4. List of command-line options
    5. Using a shortcut
  (now with video!)
  6. Using the K2PDFOPT environment variable
  7. Using the command line

Adjusting the output:
    1. Screen Size
    2. Increasing the magnification
    3. Landscape mode
    4. Output File Size
    5. Setting Margins
    6. Color Output
    7. Uneven Line Breaks/ Excess Margins

Processing Options:
    1. Showing Markings
    2. OCR
    3. Native PDF
  (now with video!)
    4. Auto-Straightening
    5. Ignoring Borders/ Headers/Footers
    6. Detecting Columns
    7. Protecting Regions
    8. Column Order
    9. Right-to-Left Page Scanning
    10. Using Ghostscript
To set the screen size for your device, use the "d" option from the interactive menu (display resolution) or the -w (width) and -h (height) command-line options. These set the device screen size in pixels. The defaults for the kindle are 560 x 735. Even though the kindle screen is technically 600 x 800, the useable space for PDF files is 560 x 735. For the larger Kindle DX, for example, the full screen resolution is 824 x 1200, so -w 784 and -h 1135 would probably work okay (I don't have a Kindle DX, so I haven't tested it).

Windows GUI adjustment for device screen size

You typically don't have to get this exactly right. If you use values that are too small, the resolution will be poor on your device (text may appear jagged). If you use values that are too large, the file sizes will be larger than they need to be. I worked to get the kindle defaults so that the bitmaps from the PDF file map exactly 1-to-1 onto each kindle pixel, which is ideal, but it took some doing (see the version history comments on v1.16). I had to do several screen captures (ALT-SHIFT-G) using special custom PDF images and iterate a few times.

If anybody figures out the ideal settings for a device not included in k2pdfopt's device list, send me an e-mail or post screenshots at this thread on mobileread.com so that I can incorporate them into future releases of k2pdfopt. I don't have access to lots of reading devices, but typically you can find the display resolution for your reader using google (e.g. "kindle dx display resolution").

The other factor that affects the size and quality of the text on the display the DPI.


This page last modified
Sunday, 28-May-2017 10:09:24 PDT