500-word grammar check
Paste a paragraph and see what the scanning engine finds — spelling, punctuation, and grammar, with the reasoning attached. Free, nothing stored.
What it refuses to tell you.
A checker that raises three false alarms has spent your attention before it gets to the fourth finding, which might be real. On 500 words that is fatal — there is little else around it to restore your confidence. So this one is built to stay quiet.
Passive voice
“The samples were incubated” is correct and standard in a methods section. A checker that flags it has told you nothing and cost you your attention.
Hedging
“May contribute to” is calibration to the evidence, not weakness. Removing it would make the claim stronger than the data supports.
Repeated technical terms
Repetition is deliberate in academic writing. A synonym implies a different referent, which is why we never suggest one for a term you have defined.
Discipline vocabulary
Gene symbols, taxa, and chemical names follow their own conventions. Anything with an internal capital or a digit is left alone, and so is any word you use more than once.
This is one check out of five.
It reads language, and nothing else. Whether your DOIs resolve, whether your sections are in the order your journal expects, whether your figures are numbered consistently, and whether your conclusion follows from your results are all outside what this sees. A full scan checks all of them.
It cannot give you your file back. The paid scan writes its corrections into your own .docx as tracked changes, so you accept or reject each one in Word, and hands you a clean copy alongside. A web form cannot do that.
Five hundred words is a paragraph. Consistency is a property of a whole manuscript — a term defined one way in the introduction and used another way in the discussion is invisible from inside a single extract.
Nothing is stored. Your text is checked in one request and discarded. It is not saved, not logged, and not used to train anything.
The other tools cover what this one does not.
Check that every DOI in your bibliography resolves, build a citation from a DOI, or run the submission checklist — all free, and none of them need an account.
A paragraph is not a manuscript.
Upload the whole thing and the engine checks language, citations, structure, numbering, and consistency — then writes every correction into your own file as tracked changes, with a clean copy alongside.