I do proof-reading, copy editing, and content editing of academic articles and post-graduate writing.

Proof-reading eliminates spelling, grammar, and typing mistakes; it checks for consistent grammar, and does general formatting, such as paragraphing, spacing, and headings. Proof-reading is usually the last step in checking and refining a text before it is published or submitted.

On the other hand, editing (which includes proof-reading) is a more thorough and in-depth process that improves the language, expression, and quality of the writing.

Copy editing reviews a text to improve readability and to ensure that it accords with its purpose, as well as eliminating grammatical and factual errors. Content editing is the most intensive form of editing. A content editor checks formatting, style, and content to ensure optimum fitness for purpose. Content editing includes proof-reading and copy editing as an integral part of the process. editing