Flesch-Kincaid, Gunning Fog, reading level and more.
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For most web content, aim for a Flesch Reading Ease score between 60-70, which corresponds to a Grade 8-9 reading level. This is the sweet spot - accessible to a wide audience without feeling dumbed down. Blog posts for general audiences should score 60+. Technical content for experts can go lower. Anything below 30 is academic-level and will lose most web readers quickly.
Google's Helpful Content guidelines emphasise content that's genuinely useful to readers. Content that's hard to read has poor dwell time - readers leave quickly, which signals low quality. Short sentences, active voice, and common vocabulary all improve readability and engagement simultaneously.
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