Kontrolit Readability Analyser

Flesch Reading Ease

What it is: A score from 0–100 that shows how easy your text is to read. Higher = easier.
What affects it: Shorter sentences and shorter words (fewer syllables) push the score up.

• Great (60–100): Easy to read. Suits most websites, blogs and marketing pages.
• OK (30–59): Fairly technical or dense. Fine for specialist audiences, but consider simplifying.
• Hard (0–29): Academic or legal style. Likely to lose general readers online.

How to improve: Use shorter sentences (aim 12–18 words), swap long words for simpler ones, and break up big paragraphs with sub-headings and bullet points.

Flesch-Kincaid Grade

What it is: An estimate of the school year needed to understand the text. Lower = easier.
(Example: Grade 8 ≈ reading level of a typical 13–14-year-old.)

• Great (Grade 6–8): Clear for most adults and ideal for web copy.
• OK (Grade 9–12): More complex; acceptable for technical services or B2B detail pages.
• Hard (Grade 13+): University level. Expect drop-off from non-specialists.

How to improve: Shorten sentences, use everyday vocabulary, prefer active voice (“We’ll help you…”) and avoid stacked clauses.

Gunning Fog Index

What it is: Another readability score shown as years of education needed. Lower = easier.
It looks at sentence length and the share of complex words (3+ syllables).

• Great (8–12): Good for most websites and marketing content.
• OK (13–14): Getting heavy; fine for expert audiences.
• Hard (15+): Very dense; expect low engagement from general readers.

How to improve: Keep most sentences under 20 words, cut jargon, replace long words where possible (e.g., “use” not “utilise”), and turn passive phrases into active ones.

Quick targets for business websites

• Aim for Flesch Reading Ease ≥ 60
• Aim for Flesch-Kincaid Grade ≤ 8
• Aim for Gunning Fog ≤ 12

If your scores land in amber or red, focus on shorter sentences, simpler words, and clearer structure.