Original Drawing Colour to Printed Grayscale. A third element in the diagram is a yellow arrow, which is almost invisible in grayscale. In grayscale, the difference between the two is not so clear. The circle is dark red and the square is dark blue. Better still: change the “mode” of the image to grayscale, either in a photo editor or in Writer itself (see Modifying an Image).įor example, the following diagram looks good in color. Test by printing on a black-and-white printer using a grayscale setting. If color images are to be printed in grayscale, check that any adjacent colors have good contrast and print dark enough. Preparing Images for Black-and-White Printing Most computer monitors work at between 72 and 96 dpi, reducing the resolution (and the file size) has no negative impact on what is displayed but does make Writer more responsive. If the document is meant for screen use only, there is no need to use high resolution images of 300 or more dpi (dots per inch).Do any other required image manipulation (brightness and contrast, color balance, cropping, conversion to grayscale, and so on) in a graphics package, not in Writer, even though Writer has the tools to do a lot of these things too.Do not scale images with Writer, even though Writer has tools for doing this, because the results might not be as clear as you would like. Create images that have the exact dimensions required for the document, or use an appropriate graphics package to scale photographs and large drawings to the required dimensions.These and many other programs work on Windows, Macintosh OS X, and Linux. For many graphics, OOo Draw is sufficient. Open-source (and usually no-cost) tools such as Gimp (bitmap editor) and Inkscape (vector drawing program) are excellent. You do not need to buy expensive programs. To edit line drawings, use a vector drawing program. To edit photos and other bitmap images, use a bitmap editor. Some things to consider when choosing or creating pictures include image quality and whether the picture will be printed in color or black and white (grayscale). The most common are GIF, JPG, PNG, and BMP. Writer can import various vector (line drawing) and raster (bitmap) file formats. You might create images (also called ‘pictures’ in ) using a graphics program, scan them, or download them from the Internet (make sure you have permission to use them), or use photos taken with a digital camera.
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