Paste your essay, email, or post and get it back with the commas, apostrophes, quotation marks, and end marks corrected. Every word you wrote stays exactly where you put it.
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Fixes punctuation only, your words stay put
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How it works
Anything works: a paragraph from an essay, a cover letter, a caption you are about to post. Paragraph breaks are kept as they are.
The checker fixes punctuation only. It never swaps a word for a better one, so the text still sounds exactly like you.
Read the corrected version next to your original to see each fix, then copy it. Seeing the fixes side by side is the fastest way to learn the rules.
Most punctuation errors in student and work writing fall into a short list. The checker targets exactly those:
A full grammar checker or an AI editor will often "improve" a sentence you were happy with. That is a problem when the assignment is graded on your writing, or when the voice is the point, as in a personal statement. This tool runs on a punctuation-only instruction set: it may add, move, or remove a mark, and it may capitalize a word when a new sentence starts, but it never changes vocabulary or sentence order.
If a sentence is already correct, it comes back untouched, even if there is another correct way to punctuate it. Style choices like the Oxford comma are left alone unless you mix both styles in the same piece.
Some punctuation depends on meaning only you know. "My brother Sam" and "my brother, Sam," are both correct; the second implies you have one brother. The checker keeps your version when both readings are plausible. It also does not enforce a specific style guide such as APA or Chicago for things like serial commas in citations, and it does not fix grammar or spelling beyond what a punctuation fix requires. For those, run the full grammar checker.
After the experiment ended we compared our results, they matched the hypothesis. The groups average score rose in every trial but the control groups didnt. As the professor put it "the data speaks for itself".
After the experiment ended, we compared our results; they matched the hypothesis. The group's average score rose in every trial, but the control group's didn't. As the professor put it, "the data speaks for itself."
Need more than punctuation? The grammar checker also fixes subject-verb agreement, tense, and spelling, still without restyling. Use the punctuation checker when you want the lightest possible touch.
Pure Write Team
Updated October 2026
Why trust this guide
The punctuation checker uses its own narrow instruction set, written by the PureWrite team and tested on paragraphs seeded with comma splices, apostrophe errors, and misplaced quotation marks. Before release we confirm that correct sentences come back unchanged.
FAQ
No. It only adds, removes, or moves punctuation marks, plus a capital letter when a fix starts a new sentence. Your vocabulary, sentence order, and spelling style (US or UK) stay as written.
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