The spacing of text greatly impacts its legibility and readability. Thoughtful adjustments to the space between letters, words, and lines allows content to be presented in the clearest, most accessible way. This article will examine the definitions and best practices around letter, word, and line spacing in typography.
Text spacing refers to the white space between characters, words, and lines within a block of text. This includes adjustments to:
Getting text spacing right ensures content flows in a way that is easy to read and comprehend. It helps guide the eye smoothly across and down the page. Conversely, poor text spacing leads to a visually jumbled, cluttered appearance.
Letter spacing refers to the distance between individual letters within words. It impacts the density and overall "texture" of a block of text.
Letter spacing is different from kerning. Kerning adjusts the space between specific letter pairs like A-V or T-Y. Letter spacing uniformly adjusts gaps across all letters.
Word spacing refers to the blank space between words within a line of text. Like letter spacing, proper word spacing improves readability by reducing crowding. It also contributes to a clean, balanced look.
Line spacing, also called leading, controls the vertical space between lines of text in a paragraph. This impacts the "color" of a block, with tighter spacing appearing darker.
Tracking is another term for letter spacing, referring to uniform space between all letters. It should not be confused with kerning between specific letter pairs.
Leading is another term for line spacing, meaning the vertical space from baseline to baseline down the page. It was named for the physical lead spacers used in traditional typesetting.
Expanded letter spacing increases space between letters uniformly. Condensed letter spacing decreases space between letters uniformly. Too much or too little spacing both impact legibility.
The optimal line length is around 50-75 characters per line. This keeps each line comfortable to read without needing excessive eye movement or scanning.
In monospaced fonts, every letter occupies the same width. In proportionally spaced fonts, letter widths vary based on the actual shapes. Most modern fonts are proportionally spaced for better fit.
Careful text spacing creates continuity, improves flow, and enhances readability. Letter spacing, word spacing, and line spacing can each optimize legibility in different but complementary ways. Following best practices for text spacing allows typography to communicate with clarity and focus - guiding the eye across the page in an even, accessible rhythm. Keeping these principles in mind as we design interfaces and documents will lift the reading experience to new heights of comfort and comprehension.
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