Category: Inclusive Design Practices

Plain Language

Also known as: Plain Writing, Clear Language

Simply put

Plain language is writing that is clear and easy to understand, designed so readers can grasp the meaning as quickly and completely as possible. It uses complete sentences, correct grammar, and accurate word choices to help people make sense of information such as their rights, obligations, and benefits.

Formal definition

Plain language refers to communication practices that produce grammatically correct, well-structured content intended to maximize reader comprehension on first reading. As described by recognized authorities, it emphasizes complete sentence structure, accurate word usage, and clarity so that the intended audience understands as quickly, easily, and completely as possible. While plain language supports broader accessibility and usability goals, it is a content-quality discipline distinct from technical standards such as WCAG; practitioners generally apply it alongside, rather than in place of, established accessibility conformance requirements.

Why it matters

Plain language directly affects whether people can understand and act on information about their rights, obligations, and benefits. As digital.gov notes, clear and easy-to-understand content is critical to helping the public make sense of what they are entitled to and what is required of them. When content is dense, jargon-laden, or poorly structured, readers may misunderstand important instructions or miss information that affects them, regardless of how technically accessible the underlying page may be.

For accessibility, plain language broadens the reach of content to a wider range of readers, including people with cognitive or learning disabilities, people reading in a non-native language, and users of assistive technology who benefit from clear, well-organized text. It complements technical accessibility work rather than replacing it: a page can meet technical conformance requirements and still be difficult to comprehend if the writing itself is unclear. Because plain language is a content-quality discipline distinct from standards such as WCAG, organizations generally apply it alongside established accessibility conformance efforts.

Adopting plain language also supports usability and trust. When readers understand information the first time they read it, they are less likely to make errors, less likely to need follow-up support, and better able to exercise their rights and access services. This entry is informational and not legal advice; organizations with specific compliance obligations should consult qualified counsel and current agency guidance.

Who it's relevant to

Content designers and writers

Those who draft web copy, forms, instructions, and policy content apply plain language principles, complete sentence structure, accurate word usage, and clear organization, to help readers understand information on first reading. This is a core content-quality practice that works alongside technical accessibility requirements.

Government and public sector communicators

Agencies communicating obligations and benefits to the public rely on plain language so people can make sense of what applies to them. Resources such as digital.gov and OPM guidance describe plain language as central to clear public communication, though specific statutory requirements vary and should be confirmed against current agency rules.

Accessibility and UX practitioners

Teams working on accessible and usable experiences use plain language to broaden comprehension for a wide range of readers, including people with cognitive or learning disabilities and people reading in a second language. Plain language complements but does not replace WCAG conformance and other technical accessibility work.

Compliance officers and legal counsel

Those responsible for accessibility programs should treat plain language as one part of a broader strategy. Meeting content-quality goals does not by itself guarantee legal compliance or technical conformance; organizations with specific obligations should consult qualified counsel and monitor evolving guidance and rulemaking.

Inside Plain Language

Clear and Simple Wording

The use of common, everyday words and the avoidance of jargon, idioms, and unnecessarily complex vocabulary so that content is more readily understood by a broad audience, including people with cognitive and learning disabilities.

Logical Structure and Organization

Content arranged in a predictable order with informative headings, short paragraphs, and lists that help readers scan and comprehend information. This supports both readability and navigation by assistive technology.

Concise Sentences

Short, direct sentences that convey one main idea at a time, reducing the cognitive load required to process the content.

Reader-Focused Presentation

Writing organized around what the reader needs to do or know, often using active voice and clearly stated actions or instructions.

Relationship to WCAG

WCAG addresses aspects of readability primarily at the AAA level, such as Success Criterion 3.1.5 Reading Level and 3.1.3 Unusual Words. These are AAA criteria and are generally not part of the AA level most commonly cited as a target, though plain language practices support broader accessibility goals.

Common questions

Answers to the questions practitioners most commonly ask about Plain Language.

Does using plain language mean 'dumbing down' content or removing important detail?

No. Plain language is about clarity and organization, not oversimplification or the removal of substantive information. The goal is to help readers find, understand, and use information the first time they read it. Necessary detail, including technical or legal content, can be retained while structuring it clearly, defining terms, and presenting it in a logical order. Plain language generally aims to match the content to the audience's needs rather than reduce its accuracy or completeness.

Is plain language the same thing as meeting WCAG requirements?

Not exactly. Plain language and WCAG overlap but are not identical. WCAG includes a success criterion related to reading level (Reading Level, 3.1.5) at the AAA conformance level, along with other criteria addressing unusual words and abbreviations, but plain language as a broader practice extends beyond any single success criterion. Writing clearly can support several accessibility goals, yet meeting WCAG's most commonly cited AA target does not by itself require the reading-level criterion, which sits at AAA. Plain language should be treated as a supporting practice rather than a substitute for conformance testing.

How can I tell whether content is written in plain language?

Common approaches include usability testing with representative readers, checking whether users can locate and act on key information quickly, and reviewing structure, headings, sentence length, and terminology. Readability formulas can offer a rough signal but do not capture whether content is genuinely understandable, so they are generally used alongside human review and testing rather than on their own.

What practical techniques help make content clearer?

Frequently recommended techniques include using common, familiar words; keeping sentences and paragraphs concise; using the active voice where appropriate; organizing content with descriptive headings and lists; defining or avoiding jargon and abbreviations; and putting the most important information first. Presenting one main idea per paragraph and using consistent terminology can also help readers understand content more easily.

Does plain language help users of assistive technology?

It can. Clear structure, meaningful headings, and consistent terminology may support people who use screen readers or other assistive technologies, as well as people with cognitive or learning disabilities. However, plain language addresses comprehension and does not replace technical accessibility measures such as proper markup, keyboard operability, and text alternatives. It is best treated as one part of a broader accessible design and development effort that includes manual and assistive technology testing.

Where does plain language fit within an accessibility or compliance program?

Plain language is generally positioned as a content quality and usability practice that complements technical conformance work rather than replacing it. It can support goals across contexts, including public-facing content from government and businesses, but writing clearly does not on its own establish legal compliance under frameworks such as Title II or Title III of the ADA. Organizations should combine clear content with conformance testing and consult qualified legal counsel regarding obligations, as requirements evolve through regulation and case law.

Common misconceptions

Plain language means dumbing down content or removing important detail.

Plain language focuses on clarity and organization rather than omitting substance. Accurate and complete information can be presented in a way that is easier to understand without sacrificing necessary detail.

Using plain language guarantees WCAG conformance or legal compliance.

Readability-related criteria in WCAG generally fall at the AAA level, which is not commonly required as a conformance target, and meeting them does not by itself ensure overall accessibility or immunity from legal claims. Conformance, usability, and legal compliance are distinct.

Automated readability scores fully measure whether content uses plain language.

Automated readability metrics can flag some issues but capture only a portion of what makes content understandable. Human review and testing with the intended audience, including people with disabilities, remain important.

Best practices

Use common, everyday vocabulary and define or avoid jargon, idioms, and abbreviations that may not be widely understood.

Break content into short paragraphs, use descriptive headings, and apply lists to help readers scan and locate information.

Write concise sentences that express one main idea at a time and favor active voice and clearly stated actions.

Organize content around what the reader needs to know or do, placing the most important information first.

Test content with the intended audience, including people with cognitive and learning disabilities, rather than relying solely on automated readability scores.

Treat plain language as a complement to WCAG conformance and usability testing, and consult qualified legal counsel and current agency guidance for compliance questions, as this guidance is not legal advice.