Analyze content: words · reading time · Flesch readability. Korean + English.

How to use

  1. Paste your blog post / article / page body.
  2. Characters / words / sentences / paragraphs / reading time update live.
  3. Top 10 keyword frequencies appear (stop words auto-removed).
  4. Flesch readability score grades the difficulty.
  5. Compare against SEO recommendations (1,500–2,500 words).

Key features

  • Char count (with/without spaces) · words · sentences · paragraphs
  • Reading time (200 words/min average)
  • Top 10 keyword frequency (stop words excluded)
  • Flesch reading ease + grade label
  • Auto Korean/English detection

Use cases

  • Blog posts — verify SEO length (1,500–2,500 words)
  • Social captions — Twitter 280, Instagram 2,200 limits
  • Content SEO — discover LSI keywords via frequency
  • Audience tuning — match readability to target level
  • Email marketing — adjust length to reading time

What is the Flesch reading ease score?

Flesch Reading Ease (Rudolf Flesch, 1948). 100-point scale, higher = easier. 90–100: 5th grade (very easy), 60–70: 8th–9th grade (standard blog), 30–50: college, 0–30: academic. For general blogs target 60+; US government docs and journalism aim for 60–70. Korean uses a different formula but average sentence length serves as a similar proxy.

FAQ

Korean readability accurate?

Flesch doesn't apply directly to Korean. We estimate via avg sentence length. Accurate Korean readability needs NLP.

Does keyword frequency affect SEO?

Indirectly — search engines look at keyword density and diversity. Use this to verify natural distribution.

vs char-counter?

char-counter only counts. This includes SEO analysis, readability, keyword frequency.

Free?

Yes, text stays in your browser.