Font Readability Score: Catch Text That Strains Eyes
Measure how easy your fonts are to read in seconds. Get a clear score plus specific sizing, spacing, and line-length fixes for every hard-to-read block.
Free with a Brainito account. No credit card required.
One Clear Readability Score
Your typography gets a single score, so you know at a glance whether your text helps or hurts.
Sizing and Spacing Checks
Catch tiny font sizes, cramped line height, and lines that run too long to scan comfortably.
Mobile Text Included
See how your type holds up on small screens, where tight sizing and spacing hurt readers most.
Frequently Asked Questions
What font size should body text be in 2026?
For most sites, 16px is the practical minimum for body text, with around 1.5 line height and 45 to 75 characters per line. The score flags anything below those thresholds and shows exactly which elements to fix.
What factors go into the Font Readability Score?
The score weighs font size, line height, line length, and letter spacing across your page, then combines them into one rating with a breakdown you can act on element by element.
Is the Font Readability Score free?
Yes. The tool is free once you create a Brainito account. Score any page, adjust your typography, and run it again to confirm reading actually got easier for your visitors.
Score your fonts for readability and fix eye strain in minutes
One account unlocks font readability score plus 340+ marketing tools, weekly audits, and your action plan.