The Grammar Improver reviews an existing draft for sentence-level problems such as subject–verb disagreement, inconsistent tense, fragments, punctuation mistakes, awkward modifiers, repetition, and needlessly tangled wording. It returns a revised version and, when the response supports it, a set of suggested fixes. This is a diagnostic editing pass: it does not determine whether the underlying facts, argument, or professional advice are correct.
Meaning can change even when a sentence becomes smoother. Removing a hedge may turn a tentative finding into a certainty. Replacing a technical term with a familiar synonym can make it inaccurate. Moving “only” a few words can alter what is limited. Compare the output with the source, paying special attention to numbers, names, quotations, negatives, conditions, legal language, and field-specific vocabulary.
Voice requires the same care. Shortening every sentence can flatten a deliberate rhythm, while formalizing an email can make a warm relationship sound distant. Decide which conventions matter before the pass: US or UK spelling, preferred capitalization, serial comma, inclusive language, brand terms, and the level of formality. Accept suggestions that solve a real reading problem; reject changes that merely make the prose sound generically polished.
For high-stakes material, use a second reviewer with subject knowledge. A contract clause, clinical instruction, financial disclosure, or graded assignment needs more than clean syntax. Keep tracked changes when possible, verify citations and claims separately, and read the final text aloud. The goal is a precise version of the author’s message—not a new message that happens to be grammatically tidy.