About this tool
Score readability, find long sentences and passive voice, and count words, sentences and reading time — in your browser.
Readability uses the Flesch Reading Ease formula for English and its adaptations for Spanish (Fernández Huerta), French (Kandel–Moles) and German (Amstad), based on words per sentence and syllables per word. Sentences over 25 words are flagged and passive voice is found with language patterns.
Example: Your text = The cat sat on the mat. The ball was thrown by the boy. It was a good day., Language = English → Readability score (0–100) = 100, Reading level = 1.
Scores are a guide for clear writing, not a grade. Syllables are counted by rules, so very short texts give rough results.
Quick steps
- Paste or type your text.
- Press Analyze (or Try an example to see how it works).
- Read the results and copy them if you need them elsewhere.
Everything runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Content Quality Checker (readability, passive voice) work?
Readability uses the Flesch Reading Ease formula for English and its adaptations for Spanish (Fernández Huerta), French (Kandel–Moles) and German (Amstad), based on words per sentence and syllables per word. Sentences over 25 words are flagged and passive voice is found with language patterns.
What should I keep in mind?
Scores are a guide for clear writing, not a grade. Syllables are counted by rules, so very short texts give rough results.
Is my data sent anywhere?
No. What you type stays on your device; the page only shows the result.