Readability Scorer
Score text readability with Flesch-Kincaid, Gunning Fog, Coleman-Liau, and ARI
/v1/text/readability
How to Use
1. Send a POST request to `/v1/text/readability` with the `text` field containing the content you want to score. 2. Read the `scores` object for the five indices. 3. Use `interpretation.level` for a plain-English summary (e.g. "Fairly Easy"). 4. Use `statistics` for raw text metrics like word count and sentence count.
About This Tool
The Readability endpoint computes five industry-standard readability scores for any English text: Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, and the Automated Readability Index (ARI).
Along with scores, the response includes detailed text statistics — word count, sentence count, syllable count, average words per sentence — and a plain-English interpretation from "Very Easy" to "Very Confusing".
Use Cases
Content quality gates
Reject or flag content below a readability threshold before publishing
Educational material
Ensure learning resources match the target grade level
Legal & compliance
Verify that T&Cs and privacy policies meet plain-language requirements
SEO content scoring
Penalise overly complex copy in content management workflows