Readability is one of the most consistently underestimated SEO factors. Technically sound pages that are hard to read perform worse than they should — users leave quickly, signals bounce rates rise, and Google interprets this as content that doesn't satisfy search intent.

Writing readable content is not about dumbing down. It's about removing unnecessary obstacles between your ideas and your reader's understanding.

Why Readability Affects Rankings

Google's ranking systems increasingly rely on user engagement signals. If searchers consistently find your content hard to read and leave quickly to try a different result, Google notices. Improving readability directly improves:

- Dwell time — How long users stay on your page - Bounce rate — Whether users explore further into your site - Pogo-sticking — Whether users return to the search results immediately - Social shares — Content that's easy to read gets shared more

The Flesch Reading Ease Score

The most common readability metric is the Flesch Reading Ease score, which runs from 0 to 100. Higher scores are easier to read. For most web content, aim for a score above 60 (plain English, accessible to most adults).

The score is based on average sentence length and average syllables per word. Shorter sentences and simpler words mean higher scores.

Shorter Sentences

Long sentences are the primary cause of poor readability. The average reading sentence in your content should be under 20 words. When you find yourself using a comma where a full stop could go, consider making it two sentences.

Compare these:

Hard to read: The implementation of structured data markup across your website's key page types, including article pages, product pages, and FAQ sections, is an important step in improving your site's visibility in rich search results and its potential to be cited by AI answer engines. Easy to read: Adding structured data to your key pages is one of the most effective ways to improve search visibility. It helps both traditional search results and AI answer engines understand your content.

Use Subheadings Every 300 Words

Web users scan before they read. Subheadings allow a user to quickly determine whether the content is relevant to them and find the section they need.

Use H2 subheadings for major sections and H3 for subsections within those. Frame subheadings as specific statements or questions that communicate value on their own.

Short Paragraphs

Online, paragraphs should rarely exceed three or four sentences. Long paragraphs look intimidating and cause readers to skim to the next heading. Two-sentence paragraphs are often ideal for web content.

Active Voice

Passive voice adds unnecessary length and complexity. "The page was crawled by Google" is passive. "Google crawled the page" is active. Active voice is clearer, shorter, and more engaging.

Concrete Language

Vague language makes content harder to read and evaluate. Replace abstract statements with specific, concrete ones.

Vague: This approach can improve your search performance significantly. Concrete: This fix typically improves PageSpeed scores by 15-20 points.

Avoid Jargon Where Possible

Every piece of jargon is a barrier for non-specialist readers. Where technical terms are necessary, define them on first use. Where they're not necessary, replace them with plain language.

Bullet Points and Lists

Lists break up complex information into scannable chunks. Use them for: - Items with no natural prose order - Four or more items that would make a sentence unwieldy - Step-by-step processes

Don't use lists for everything — too many bullet points fragment content and make it harder to follow an argument.

The Reading Level Check

Use a readability checker to evaluate your content before publishing. If your score is below 50, work through the content and: 1. Break long sentences into shorter ones 2. Replace complex words with simpler alternatives 3. Add more subheadings 4. Shorten paragraphs

Improving readability is one of the highest-return content improvements you can make — and it doesn't require any additional research or expertise, just editorial discipline.