Your website copy looks clean to you and your team. But roughly one in five visitors processes information differently due to ADHD, dyslexia, anxiety, or other cognitive conditions. They land on your page, hit a wall of dense text or ambiguous instructions, and leave without converting. The fix is not a redesign. It is rewriting your content with plain language, clear structure, and visual support so every visitor can actually understand what you offer.

Writing Web Content Accessible to Users with Cognitive Disabilities
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TL;DR:
  • Use plain language (short sentences, common words, one idea per paragraph) to reduce cognitive load.
  • Structure content with descriptive headings, bullet lists, and consistent layouts so readers can scan and navigate.
  • Add visual aids like diagrams, icons, and whitespace to reinforce meaning without relying on text alone.
  • These changes improve comprehension for users with cognitive disabilities and boost conversion for everyone.

Why accessible content matters

About 15-20% of the global population has some form of cognitive disability. That includes dyslexia, ADHD, autism spectrum conditions, intellectual disabilities, and acquired brain injuries. These are not edge cases. They are a significant chunk of your traffic.

0%
Of visitors may have a cognitive disability

When content is inaccessible to these users, they bounce. They do not fill out your form, read your pricing page, or complete checkout. The result is lost revenue from traffic you already paid to acquire.

Cognitive accessibility also overlaps with general usability. Stressed users, distracted mobile readers, non-native speakers, and older adults all benefit from the same writing techniques. Fixing content for cognitive accessibility lifts conversion across the board.

Pro tip: Run your landing page through a readability checker. If the reading level is above grade 8 (Flesch-Kincaid), you are losing visitors who could convert with simpler language.

How plain language helps

plain language
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Plain language means writing so the reader understands the first time they read it. No jargon. No compound sentences stacked three deep. No assumptions about prior knowledge.

Here is what plain language looks like in practice:

  • Short sentences. Keep them under 20 words when possible. One idea per sentence.
  • Common words. Use "start" instead of "commence." Use "help" instead of "facilitate."
  • Active voice. "We process your order in 24 hours" beats "Your order will be processed within a 24-hour timeframe."
  • Defined terms. If you must use a technical word, define it immediately in parentheses or the next sentence.
  • Consistent vocabulary. Pick one word for a concept and stick with it. Do not alternate between "account," "profile," and "dashboard" for the same thing.
Gov.uk rewrote their government services in plain language and saw completion rates jump significantly. Mailchimp's content style guide mandates a conversational, jargon-free tone across all product copy. These are not accessibility afterthoughts. They are deliberate content strategies that drive results.
Comprehension improvement with plain language
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Users with dyslexia process unfamiliar words more slowly. Users with ADHD lose focus on long, complex sentences. Plain language removes those barriers without dumbing anything down. You are respecting the reader's time and attention.

Clear headings and structure

A wall of text is hostile to everyone. For someone with a cognitive disability, it is a dead end.

Headings act as signposts. They let readers scan the page, find what they need, and skip what they do not. Effective heading structure follows these rules:

  1. Use a logical hierarchy. H1 for the page title, H2 for main sections, H3 for subsections. Never skip levels.
  2. Make headings descriptive. "How to reset your password" tells the reader exactly what follows. "Getting started" does not.
  3. Keep headings short. Six to eight words maximum. Long headings defeat the purpose of scanning.
  4. Front-load keywords. Put the most important word first. "Password reset steps" scans faster than "Steps you can take to reset your password."
Beyond headings, use bullet lists for any set of three or more related items. Use numbered lists for sequential steps. Break paragraphs at natural thought boundaries. White space between sections gives the brain a moment to process before moving on.
"It's your developer team's job to make the site accessible, but from then on, the torch is passed onto the content team."
>, Accessible Writing Techniques for Web Content

Content creators own this. No amount of ARIA labels or semantic HTML compensates for a 400-word paragraph with no subheadings.

Visual aids reinforce meaning

visual aids
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Text alone is not enough for many users with cognitive disabilities. Visual aids create a second channel of understanding that reinforces written content.

Effective visual aids include:

  • Icons next to key actions. A magnifying glass for search, a cart for checkout, a checkmark for confirmation. These reduce reliance on reading every label.
  • Diagrams and flowcharts. Show processes visually instead of describing them in long paragraphs.
  • Screenshots with annotations. When explaining a multi-step task, show the actual interface with numbered callouts.
  • Consistent color coding. Use green for success, red for errors, blue for informational messages. Keep this consistent across every page.
  • Whitespace as a visual aid. Generous margins and padding between sections reduce visual clutter and help users with attention difficulties focus on one block at a time.
IKEA's assembly instructions work globally because they rely almost entirely on diagrams. Stripe's documentation pairs every code example with a visual preview. These approaches reduce cognitive load by giving the brain multiple ways to process the same information.
Note: Always include alt text on images and diagrams. Visual aids that lack text alternatives create a new accessibility barrier for screen reader users.

The accessible writing process

person using website on laptop
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Writing accessible content is not a one-time task. It is a repeatable process you apply to every page, every update, every new feature announcement. Here is the workflow that works:

Writing Web Content Accessible to Users with Cognitive Disabilities process
Figure 1: Writing Web Content Accessible to Users with Cognitive Disabilities at a glance.

The steps break down like this:

  1. Audit existing content. Identify pages with high bounce rates or low conversion. These are your starting points.
  2. Check readability. Run text through a readability tool. Target grade 6-8 reading level.
  3. Simplify language. Replace jargon, shorten sentences, switch to active voice.
  4. Add structure. Insert headings, break up long paragraphs, convert lists from prose to bullets.
  5. Add visual support. Include icons, diagrams, or screenshots where text alone is insufficient.
  6. Test with real users. If possible, include participants with cognitive disabilities in usability testing.
  7. Iterate. Review analytics after changes. Did bounce rate drop? Did conversion improve? Adjust and repeat.
Tools like PagePerson Insights can help you spot where visitors with cognitive differences struggle on your pages, giving you data instead of guesswork about what to rewrite first.

The following interactive card shows what a typical content accessibility audit might reveal on a single landing page:

Example: Landing Page Audit Results

Reading levelGrade 12
Avg. sentence length28 words
Headings per 500 words2
Visual aids present0
Jargon terms undefined4
After rewrite: reading levelGrade 7
After rewrite: bounce rate change-18%
Before RewriteAfter Rewrite
Grade 12 reading levelGrade 7 reading level
28-word average sentences14-word average sentences
No headings in bodyH2 every 150-200 words
Zero visual aidsIcons + 1 diagram
4 undefined jargon termsAll terms defined inline
62% bounce rate44% bounce rate

Real examples of accessible content

Several organizations demonstrate what accessible web content looks like at scale:

  • Gov.uk strips every page to plain English, short paragraphs, and task-focused headings. Their design system documentation is a masterclass in clarity.
  • Mailchimp's Content Style Guide provides specific rules: write at a grade 5-7 level, avoid idioms, define technical terms. It is publicly available and worth studying.
  • Apple's support pages pair step-by-step numbered instructions with annotated screenshots. Each step is one action, one sentence.
  • NHS.uk writes health information at a reading age of 9-11. Complex medical topics become understandable without losing accuracy.
What these sites share: short sentences, descriptive headings, generous whitespace, and visual support. None of them sacrificed depth or professionalism. They just removed unnecessary complexity.
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Key takeaway: Writing for cognitive accessibility means using plain language, clear headings, and visual aids to ensure every visitor can understand your content on the first read. These same techniques reduce bounce rates and increase conversion for all users.

Web Content Accessibility Checklist

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FAQ

Frequently Asked Questions

Several free tools work well. Hemingway Editor highlights complex sentences and gives a readability grade. WebAIM's WAVE tool checks structural accessibility like heading hierarchy and missing alt text. Readable.com provides detailed readability scores across multiple formulas. For cognitive-specific analysis, PagePerson Insights evaluates how visitors with different cognitive profiles experience your pages and flags comprehension barriers that generic tools miss.
Start with a shared style guide that includes readability targets (grade level, sentence length, heading frequency). Run a 30-minute workshop showing before-and-after examples from your own site. Make accessibility part of your content review process: add a checklist item for readability score before any page goes live. The A11Y Collective and W3C's Cognitive Accessibility Guidance offer free training resources. Pair new writers with someone experienced in plain language for their first few pieces.
The biggest barriers are long sentences with multiple clauses, undefined jargon, missing headings, walls of unbroken text, inconsistent terminology (calling the same feature by different names), and reliance on text alone without visual support. Ambiguous link text like "click here" or "learn more" also creates problems because users with cognitive disabilities often scan links out of context. Another overlooked barrier is inconsistent page layouts. When navigation or content blocks move between pages, users with cognitive disabilities lose their orientation.
No. Plain language and clear headings actually improve SEO. Search engines favor content that answers questions directly, uses descriptive headings, and keeps readers on the page longer. Lower bounce rates and higher time-on-page signal quality to search algorithms. Google's own documentation recommends writing in plain, simple language.
It depends on your jurisdiction, but the trend is toward inclusion. WCAG 2.2 includes success criteria related to cognitive accessibility (like consistent navigation and error identification). The European Accessibility Act, which applies from June 2025, broadens requirements. In the US, ADA lawsuits increasingly reference usability for people with cognitive disabilities. Even where not explicitly mandated, cognitive accessibility reduces legal risk and demonstrates due diligence.

What is the first page on your site you would rewrite for cognitive accessibility? Share your starting point below.

Additional Resources