KEYWORD RESEARCH
Content Readability Checker
Most readers skim on a phone. Short sentences, everyday words and short paragraphs keep them reading. This checker measures the usual readability statistics and points to the exact sentences worth splitting.
- Runs in your browser
- Nothing you paste is uploaded
- Free, no sign-up
- CheckFlesch reading ease and Flesch-Kincaid grade
- CheckSentences over 25 words
- CheckPassive voice (estimated)
- CheckParagraphs over 150 words
Free
no sign-up, no usage limit
0 uploads
what you paste stays on your device
4 checks
what the tool looks at
Offline
works once the page has loaded
Loading the tool…
HOW IT WORKS
How to use the Content Readability Checker
The text of an article or page.
Paste the text (without menus and footers).
Read the scores, then the list of long sentences.
Rewrite the longest sentences first and check again.
WHAT IT CHECKS
What it looks at, and how to read it.
Flesch reading ease, grade level, words per sentence, share of long words, checks and the longest sentences.
What it checks
- Flesch reading ease and Flesch-Kincaid grade
- Sentences over 25 words
- Passive voice (estimated)
- Paragraphs over 150 words
How to read the results
- Reading ease above 60 suits a general audience.
- Technical pages can score lower; clarity matters more than the number.
GOOD TO KNOW
Common mistakes, an example and the limits.
Common mistakes
- Chasing a score by cutting needed detail.
- Writing in one long paragraph for mobile readers.
- Using jargon the customer does not use.
A worked example
A product guide scores 38. Splitting eight long sentences and replacing "utilise" and "approximately" brings it to 61.
Limitations
- Formulas are designed for English and measure length, not clarity or accuracy.
- Passive voice is detected by a pattern and is an estimate.
FAQ
Questions about the Content Readability Checker
Straight answers about what it does and where its limits are.
Is readability a ranking factor?
Not directly. Readable pages keep visitors reading and answer questions faster, which is what search engines try to reward.
Does it work for Swahili?
No: the formulas count English syllables. Long-sentence and paragraph checks still help.
Need this for a whole website, over time?
The NdovuSEOLabs platform connects your own Search Console, analytics and server logs, and audits every page on a schedule.