Pricing

$20.00 / 1,000 page scanneds

Readability Checker API — Flesch, Fog, SMOG for Any URL

Score web page readability via API. Input: a page URL. Output: JSON with Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG scores, and an overall reading level. For content QA and SEO workflows. Pay per result: $0.02 per page scanned.

Pricing

$20.00 / 1,000 page scanneds

Rating

0.0

(0)

Developer

Anthony Snider

Actor stats

Bookmarked

Total users

Monthly active users

4 days ago

Last modified

Webpage Readability Grade

Score how easy any web page is to read — Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, ARI, Coleman-Liau, and a plain-English reading level.

Live on the Apify Store — run it instantly or call it as an agent tool via Apify MCP.

What you get

Fetches the page HTML and extracts the visible text (scripts, styles, and markup stripped).
Counts sentences, words, and syllables (heuristic vowel-group counter) plus complex (3+ syllable) words.
Computes six industry-standard readability metrics:
- Flesch Reading Ease (higher = easier)
- Flesch-Kincaid Grade
- Gunning Fog
- SMOG
- ARI (Automated Readability Index)
- Coleman-Liau
Maps the grade to a reading level: Kindergarten → Elementary → Middle School → High School → College → Graduate.
Accepts a single URL or a bulk list, with a configurable cap.

Great for SEO content audits, editorial QA, accessibility checks, and content-marketing pipelines.

Input

{
  "url": "https://en.wikipedia.org/wiki/Readability",
  "urls": ["https://example.com", "https://news.ycombinator.com"],
  "maxUrls": 25
}

Output

{
  "url": "https://en.wikipedia.org/wiki/Readability",
  "finalUrl": "https://en.wikipedia.org/wiki/Readability",
  "status": 200,
  "stats": { "sentences": 412, "words": 6890, "syllables": 11240, "complexWords": 1320 },
  "scores": {
    "fleschReadingEase": 41.2,
    "fleschKincaidGrade": 12.8,
    "gunningFog": 14.1,
    "smog": 13.4,
    "ari": 13.0,
    "colemanLiau": 12.6
  },
  "readingLevel": "College"
}

Pricing

Pay-per-event: $0.02 per page scanned. You only pay for pages that are successfully graded.

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