Paste text with inconsistent capitalization and get every sentence properly capitalized instantly.
Capitalization mistakes are common in quickly typed text — messages, notes typed on a phone with autocapitalize turned off, text pasted from a source that stripped formatting, or a first draft written in a rush without pausing to fix each sentence start. While a full grammar check involves much more than capitalization, fixing sentence-starting capitals is one of the most visible, quickest wins for making a block of text look properly proofread.
This tool scans your text for sentence boundaries — periods, question marks, and exclamation points — and capitalizes the first letter that follows each one, along with the very first letter of the text itself. It's a straightforward, mechanical fix rather than a full grammar or style correction: it won't catch a proper noun that should be capitalized mid-sentence, or fix a comma splice, but it reliably handles the specific, common issue of sentences that start with a lowercase letter.
It's useful for quickly cleaning up notes before sharing them, fixing text pasted from a chat app or transcription tool where capitalization often gets lost, and as a fast first pass before a more thorough proofread. Because it runs entirely in your browser, you can clean up a draft as many times as you like with no processing delay.