What is Copy-Editing?

I know that proof readingis when someone read an article over and over again to fix grammar mistake(s) and or spelling error(s). But I am somehow confused that what the difference is with copy-editing? Is there something additional in copy-editing or is it something entirely different?

Solution 1:

The difference is at what stage in production editorial process each step occurs.

Copy editing involves revising an early stage draft or manuscript for format, style and accuracy before it is typeset. A copy editor is looking chiefly to correct or improve the work of the writer.

Proofreading literally means to check the galley proof for errors. A proof is what you make on a printing press or printer so you can see how the typesetting will actually come out. A proofreader is looking chiefly for mistakes made by the typesetter.