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  1. Methodology
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  5. Paragraph Length Distribution

Paragraph Length Distribution

stable

Category: content-structure · Methodology v4.5

Paragraph size decides how easily AI systems can lift and quote your text, and that is what this parameter checks.

Signal Source

Source
https://{domain}
Kind
html_dom

Score Bands

VerdictCondition
Pass70% or more of body paragraphs fall in the 40-80 word optimal range with few or no oversized (over 120 word) paragraphs
Partial40-70% of paragraphs land in the optimal range, with a moderate share of oversized paragraphs eroding the score
Failfewer than 40% of paragraphs are in the optimal range, oversized paragraphs carry a heavy penalty, or fewer than three paragraphs are detected

Description

What this parameter measures

Paragraph size decides how easily AI systems can lift and quote your text, and that is what this parameter checks. friendly4AI reads the paragraph blocks from your main content region (preferring <main> and <article> while skipping nav, header, footer, and aside) and sorts each one by word count into four buckets: short (under 40 words, not credited), optimal (40-80 words, full credit), acceptable (81-120 words, 30% partial credit), and oversized (over 120 words, penalised). The score rewards a high share of optimal paragraphs and deducts for oversized ones that block clean snippet extraction.

Why it matters for AI-readiness

AI answer engines extract content in chunks, and a tight 40-80 word paragraph maps almost one-to-one onto a quotable snippet. Paragraphs longer than 120 words mix several ideas into one block, so a model either skips them or quotes them imprecisely. Both outcomes lower your odds of being cited cleanly. Keeping one idea per paragraph at the right length makes your content easy for ChatGPT, Gemini, and Perplexity to surface verbatim.

How we score it

Under the v4.4 methodology, this Content Structure parameter is a gradient. The processor computes baseScore = round(100 * (optimalCount + 0.3 * acceptableCount) / total), then subtracts penalty = round(30 * oversizedCount / total), clamping the result to 0-100. A page passes when roughly 70% or more of paragraphs sit in the 40-80 word range with little oversized content. It earns a partial in the 40-70% range with a moderate oversized share. It fails when fewer than 40% are optimal, the oversized penalty dominates, or the page has fewer than three paragraphs (an automatic 0, since there is not enough content to assess). These bands map the published rubric onto the processor's proportional score rather than fixed thresholds.

How to fix common issues

  • Break paragraphs over 120 words into shorter ones of 40-80 words each, keeping one idea per paragraph.
  • Expand thin one-line stubs under 40 words into substantive 40-80 word passages, or merge them where they belong together.
  • Aim for at least 70% of body paragraphs in the optimal range to clear the pass band.
  • Place real prose inside <main> or <article> so the analyzer reads it rather than treating it as boilerplate.
  • Re-scan and check the optimalCount, oversizedCount, and oversizedParagraphs evidence fields to confirm the distribution improved.

Version History

Introduced
v4.1
Last changed
v4.4

Key takeaways

  • Signal: https://{domain}
  • Category: Content Structure
  • Passes when: 70% or more of body paragraphs fall in the 40-80 word optimal range with few …

Related Parameters

  • Section Length Distribution
  • Heading Hierarchy Quality
  • Semantic HTML Structure

View full methodology changelog · All parameters · GEO/AEO glossary

Suggest a change to this parameter


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