Font readability, and content perceivability more broadly, is a pillar of digital accessibility — yet it's often overlooked in design projects.
Some fonts, however attractive, cause real readability problems for people with dyslexia or low vision: ambiguous letters (like m and w), identical glyphs (i, l, 1), or shapes that are too similar (a, e, o).
After a conversation with Designers Éthiques, I noticed how few tools made these issues easy to spot, so I built Accessible Font Checker, a free, open-source Figma file designed to quickly test a font's accessibility: it identifies ambiguous letters, checks readability across short sentences, long sentences and full paragraphs, helps you adjust line-height and letter-spacing for clarity, and lets you score each criterion and export the result to share with a team or client.
It's built for anyone — designers, developers, project leads — with no accessibility expertise required: just swap the font in Figma's local styles and follow the visual cues.
Two minutes are enough for a first pass, and the file stays free, open source, and open to contributions.