All, Left, Right, Top and Bottom
The options All, Left, Right, Top and Bottom behave all in the same way. For every option you can click on the first drop-down box to select a standard value or type in your custom one. The second drop-down box allows you to change what the units of the value in the first drop-down box will be. You can choose from px (a set amount of pixels), % (a percentage of the original image, this can be useful when working with multiple images that have different sizes), cm (a set amount of centimeters), mm (a set amount of millimeters) or inch (a set amount of inches).
All
If positive is given, add border pixels to the image in the specified color, at all four edges. If negative, draw a border with the specified color inside on top of the existing image.
Left
If positive is given, add border pixels to the image in the specified color, at the left edge. If negative, draw a border with the specified color inside on top of the existing image.
Right
If positive is given, add border pixels to the image in the specified color, at the right edge. If negative, draw a border with the specified color inside on top of the existing image.
Top
If positive is given, add border pixels to the image in the specified color, at the top edge. If negative, draw a border with the specified color inside on top of the existing image.
Bottom
If positive is given, add border pixels to the image in the specified color, at the bottom edge. If negative, draw a border with the specified color inside on top of the existing image.
Color
If the size is positive, describe the color of the drawn border.
Opacity
For negative border values an opacity can be given to create transparent captions.
