Have you discovered the Google Docs library of Add-ons? They work like plug-ins and they can perform a variety of useful tasks.
Consistency Checker,by PerfectIt, is a lite version of one of my favourite proofreading tools. It will scan your document for:
abbreviations in two forms (US vs. U.S.)
common typos (teh vs. the)
contractions (contractions aren’t used in all kinds of writing)
hyphenation of words (in-line vs. in line)
numbers in sentences (spelled out or numerals?)
spelling variations (colour or color)
These are some of the items a copyeditor or proofreader will typically check in a manuscript.
Where to Get Consistency Checker
If you have a gmail account, you can get Consistency Checker through Google Docs:
Click on the Add-ons tab in Google Docs, click on Get add-ons and search for the Consistency Checker by PerfectIt. Download the add-on.
Open the Consistency Checker by once again clicking on the Add-ons tab in Google Docs. The Consistency Checker should now be listed.
Click Open and then click Scan.
Interpreting Consistency Checker's results takes a bit of practice and may require you to look up a few things in a style guide, but once you have the hang of it, you can use this proofreading tool before you share your writing with the world.
For more information about Consistency Checker and other useful editing tools, see this post at the Beyond Paper blog.