First, yes — copyediting became one word in 2018. It is still accepted either way. Copyediting is defined as follows:
Copy editing (also copyediting, sometimes abbreviated ce) is the process of reviewing and correcting written material to improve accuracy, readability, and fitness for its purpose, and to ensure that it is free of error, omission, inconsistency, and repetition.
Submitting your writing (web content or other) to a copyeditor is an essential step in the process of your professionalism. You want your writing to match the image of quality you are portraying with your product or service. Note this study:
In a study at the University of Texas at Austin, 119 students were given newspaper articles to read.
“Vultee found eight articles that were not edited well. First, not edited well versus copyedited. This is important — he didn’t create these articles artificially for the study; the articles were actually published by news organizations. …Vultee then copyedited the articles to fix any mistakes in style, word usage, or grammar and to ensure that the articles were clear and organized.”
There was a 20 percent increase in professionalism, organization, writing, and value after reading the copyedited versions.
In many instances improper writing can derail a message, obscure a message, or send your ad campaign or presentation in another direction if you don’t capture your audience’s attention. It’s a small investment to produce much greater results.