How to use it
- Paste your text, or open a TXT, DOCX or PDF file.
- Check the colors: yellow sentences are hard to read, red ones very hard.
- Hover an underlined word or phrase to see a simpler alternative.
- Edit the text in the box above – the highlights and scores update instantly.
What the scores mean
- Flesch Reading Ease (0–100): higher is easier. 60–70 is plain English; most web copy should aim for 60 or more.
- Flesch–Kincaid Grade Level: the US school grade needed to follow the text. Grade 8–9 or lower suits a general audience.
- Gunning Fog: years of formal education needed, driven by long sentences and words of three or more syllables.
- Automated Readability Index (ARI): a grade level based on characters per word instead of syllables.
Syllables are estimated with the standard rule-based method, so an individual word can be off by one, but the averages that the formulas use are reliable.
What gets highlighted
- Hard sentences (yellow): 14 words or more with an ARI grade of 10 or higher.
- Very hard sentences (red): a grade of 14 or higher – split these into two or three sentences.
- Adverbs (blue underline): -ly words such as really or quickly that a stronger verb can often replace.
- Passive voice (green underline): was written by the team instead of the team wrote.
- Complex phrases (purple underline): in order to → to, utilize → use, due to the fact that → because, a majority of → most.
The tool also recognizes Hungarian text; there, only sentence length and wordy constructions are checked, because the Flesch formulas are calibrated for English.
Frequently asked questions
What is a good Flesch reading score?
60 or higher for general web content; 70+ reads easily for most adults. Technical or academic writing often scores 30–50.
Is this a Hemingway Editor alternative?
It highlights the same kinds of problems – hard sentences, adverbs, passive voice and complex phrases – free and without an account.
Is passive voice always wrong?
No. It's useful when the actor is unknown or unimportant. The checker flags it so you can decide.
Is my text uploaded?
No. The analysis runs in your browser; your text is kept as a draft in this browser only.