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Trevor I. Lasn

Staff Software Engineer, Engineering Manager

Open Dyslexic Font: Improve Your Web Accessibility

How to implement the Open-Dyslexic font to enhance readability for users with dyslexia

Open Dyslexic Font

What is Open Dyslexic?

Open-Dyslexic is an open-source font created by Abelardo Gonzalez in 2011. It’s characterized by its distinctive letter shapes, which are designed to be easily distinguishable from one another. The key features of this font include:

  1. Bottom-heavy letters: Each character has a thicker bottom, which helps anchor it to the line.
  2. Unique shapes: Letters that are commonly confused (like ‘b’ and ‘d’) are given more distinct forms.
  3. Increased spacing: There’s more space between letters and words to reduce crowding.

1s1

Who is it for?

While it’s called “Open Dyslexic”, this font isn’t just for people formally diagnosed with dyslexia. It can potentially benefit:

  1. Individuals with dyslexia: The primary target audience, who often struggle with standard fonts.
  2. People with reading difficulties: Even without a dyslexia diagnosis, some find this font easier to read.
  3. Children learning to read: The distinct letter shapes can help with letter recognition.
  4. Elderly individuals: As vision changes with age, some find this font more legible.

It’s important to note that while many users report improved reading experiences with Open Dyslexic, its effectiveness can vary from person to person. Dyslexia is a complex condition, and what works for one individual might not work for another.

How does it help?

The theory behind Open Dyslexic is that it addresses some common reading challenges faced by people with dyslexia:

  1. Letter confusion: By making each letter more distinct, it reduces the likelihood of mixing up similar-looking characters.
  2. Line tracking: The heavier bottom of each letter helps the eye stay on the correct line of text.
  3. Crowding effects: Increased spacing helps prevent letters from visually “running into” each other.

Open Dyslexic vs. Standard Font

While Open Dyslexic isn’t a magic solution, it’s a valuable tool in making web content more accessible. By offering it as an option, developers can cater to a wider range of reading preferences and needs. Implementing the Open-Dyslexic font on your website can significantly improve accessibility for users with dyslexia.

Why Use Open-Dyslexic?

  1. Accessibility: It makes your content more readable for people with dyslexia.
  2. Inclusivity: Shows your commitment to making your site accessible to all users.
  3. Potential SEO benefits: Search engines may favor accessible websites.

How to Implement

The easiest way to implement Open-Dyslexic is through a CDN. Here’s how:

Method 1: CDN Approach

  • Add this link in your HTML<head>:
<link href="https://fonts.cdnfonts.com/css/open-dyslexic" rel="stylesheet">
  • Use it in your CSS:
body {
font-family: 'Open-Dyslexic', sans-serif;
}

Method 2: Self-hosting

For more control, you can host the fonts yourself:

  • Download the font files from the official repository.
  • Add the font files to your project (e.g., in a /fonts directory).
  • Create a CSS file to define the font family:
@font-face {
font-family: 'Open-Dyslexic';
src: url('/fonts/OpenDyslexic-Regular.otf') format('opentype');
font-weight: normal;
font-style: normal;
}
@font-face {
font-family: 'Open-Dyslexic';
src: url('/fonts/OpenDyslexic-Bold.otf') format('opentype');
font-weight: bold;
font-style: normal;
}
/* Add more variations as needed */

Link this CSS file in your HTML and use the font as shown in Method 1.

Best Practices

  1. Offer a toggle: Allow users to switch between Open-Dyslexic and a standard font.
  2. Use it selectively: Consider applying it only to main content, not navigation or logos.
  3. Test thoroughly: Ensure it doesn’t break your layout or affect performance.

Here’s a simple React component to toggle between Open-Dyslexic and a default font:

import React, { useState, useEffect } from 'react';
function FontToggle() {
const [isDyslexicFont, setIsDyslexicFont] = useState(false);
useEffect(() => {
document.body.style.fontFamily = isDyslexicFont
? "'Open-Dyslexic', sans-serif"
: "'Arial', sans-serif";
}, [isDyslexicFont]);
return (
<button onClick={() => setIsDyslexicFont(!isDyslexicFont)}>
{isDyslexicFont ? 'Use Default Font' : 'Use Open-Dyslexic Font'}
</button>
);
}
export default FontToggle;

Remember, the goal of fonts like Open Dyslexic isn’t to replace standard fonts entirely, but to provide options. In the world of web accessibility, more options usually mean a better experience for more users.

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This article was originally published on https://www.trevorlasn.com/blog/open-dyslexic-font. It was written by a human and polished using grammar tools for clarity.