Line Length and Readability: The Typography Detail Most Sites Get Wrong
Long paragraphs that stretch edge to edge are exhausting to read, even in a beautiful font.
Your font choice doesn’t matter if the line is too long to read comfortably
A gorgeous typeface set at a generous size can still be genuinely tiring to read if the line of text stretches the full width of a wide screen. Long lines force the eye to travel further and make it easier to lose your place when jumping back to the start of the next line. It’s a subtle problem, but it’s one of the most common readability mistakes on wide, full-width layouts.
Aim for roughly 50 to 75 characters per line
This range, well established in typography, tends to feel comfortable to read for extended paragraphs. Much shorter and the eye has to jump lines too frequently; much longer and it’s easy to lose track of where you are. Constrain your paragraph containers to a max-width that lands somewhere in this range rather than letting them stretch to fill whatever space is available.
Headlines can be wider than body copy
A short, large headline doesn’t suffer from the same problem, since it’s usually only a line or two and read more as a single visual statement than as continuous reading. The width constraint matters most for actual paragraphs of body text, not for big display type.
Line height should grow a little with line length
If you do need wider text blocks for a particular layout, compensate with slightly more generous line height. Extra vertical space between lines helps the eye track from the end of one line to the start of the next, partially offsetting the strain of a longer line.
Multi-column text can help on very wide layouts
For long-form content on a wide desktop layout, splitting text into two narrower columns, similar to a print magazine, can keep each line within a comfortable range while still using the available width. This isn’t necessary for most web content, but it’s a genuinely effective option for text-heavy editorial layouts.
Check it on your actual widest breakpoint
This problem is invisible on a laptop and glaring on a large desktop monitor. Check your body text specifically at your widest supported breakpoint, since that’s exactly where an unconstrained paragraph will stretch the furthest and become the hardest to comfortably read.
