Readability formulas are approximations
Flesch-style formulas estimate difficulty from sentence length and syllables. They do not measure factual accuracy, persuasion, domain expertise or whether technical terminology is necessary.
Use sentence-level findings for editing
Long-sentence and dense-paragraph flags are most useful when they point to specific places to review, rather than collapsing an article into one mysterious score.
Do not optimize writing for a number
A lower grade level is not automatically better. Legal, medical, engineering and academic material may require precise terminology. Match the intended audience.
No text is uploaded
The analysis is deterministic and local. OpenFileTools does not need an AI service to count words, estimate syllables or calculate these formulas.