So you have a manuscript you’re very proud of and are looking to publish, but let’s be honest: you’ve been staring at the thing for so long, reading and editing and reworking over and over and over, that you can’t see your mistakes anymore. So you might be missing a typo here, a missing article there, some subject-verb disagreement every once in a while, but you just can’t tell anymore. This is when having a fresh pair of eyes look at your manuscript comes in handy, and that is what a proofreader does: find and fix those small errors so that your manuscript is ready for publication.