How to change color (transparency)?

Question:

How to change one image color to another?

How to change color of pixels to another color?

How to specify transparency color when converting to formats which do not support transparency?

How to replace a certain color with transparency?

Réponse:

Use "Add Operation" option on Script tab to select "Replace Color" filter.

Use this filter to replace a color with another color with tolerance value specified by "tolerance" parameter. "Replace Color" filter may be used quite widely.

Below, is a short list of benefits this filter provides.

  • Specify transparency when converting images to PNG format before you publish them on the Web.
  • Specify background color when converting to formats which don't support transparency (e.g. converting from PNG to JPG).
  • Change document background color. Scanned documents may have grey background color. "Change Color" filter helps make this background white. This also helps save ink of your printer.