How to crop white margins in documents?

Question:

Answer:

If you have to print many documents with white margins, you can spend much time converting them manually or let Image Converter Plus solve this problem with several mouse clicks.

Here's a way of removing white margins from images with the help of Image Converter Plus:

Launch Image Converter Plus.
Go to Photos tab, select and add files you want to change to the specified size.
Go to Script tab and click on "Add operation" in the "Operation before save: Add operation" line. Select Crop Image from the menu.
Click on "+" mark to the left of Add operation line to expand settings of added operations.
In "Auto crop border color" combobox, select "White" line (if margin color is neither black nor white, select "User defined" line and choose a color from the dialog box, then press OK button).
If margin color isn't purely white, experiment with "tolerance" value to achieve best result. Do the following:

Set value to 10% with the help of the scroller located to the right of image area.
Press Preview button.
Press Generate button.
The result is displayed in the bottom right corner of the screen.
If you're not satisfied with the result, experiment with "tolerance" value and generate the image once again. If you're satisfied with the result check other conversion settings.