For columns to be recognized, there needs to be a clear channel of whitespace between the columns from the top to the bottom of the table.
Whitespace is also critical for reading tables that do not use graphical lines for separation. This level of spacing not only makes it easier for the readers to understand, but it also helps automated accessibility tagging software be able to recognize and tag paragraphs and headings. The W3.org WCAG guidelines recommend lines spacing (leading) of 1.5 within a paragraph and at least 1.5 times that space between paragraphs. Using appropriate whitespace in your documents increases readability and comprehension by as much a 20%. It is much more useful than just indenting at the beginning of a paragraph. Whitespace, in the form of extra line spacing between paragraphs, allow the reader to know which lines belong with one paragraph, and which are the beginning of a new concept. Providing extra spacing between lines makes it easier for users with cognitive disabilities to track to the next line and know when a paragraph has ended. Whitespace is used to let the reader know what groups of text belong together. If your logo uses gradient colors or more than 2 colors, it is better to use a color image format, rather than try to do it with a font. With careful attention to positioning, you can line up the characters to make your logo look correct. If your logo uses block shapes and only 2 colors, you can have a font built where the shapes for one color are in different characters than the shapes for the other color. Things get even trickier when you want to move to a color logo. When the PDF file is scaled, raster images may look fuzzy and white lines may appear between the characters. If you transform your print file to PDF for online viewing, you will need to convert those custom font characters to raster images, or get a matching TrueType or Type 1 font built, and embed it in the PDF file. When a default font is used in place of a custom font, your logo or signature might just look like ABCD on the webpage. Web browsers may use default fonts selected by the user.
Online devices generally use different font formats than the printer.
Our documents also go to web browsers and cell phones. Today’s documents don’t just get sent to the printer to be rendered on paper. And in our multi-channel world, there are some drawbacks to using fonts for logos and signatures. Today’s printers handle images just as easily as they do fonts.
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