Design Column Overlay is a design extension for chrome. it's a free extension and is featured in Developer Tools, it has 230 active users since released its first version, it earns an average rating of 5.00 from 1 rated user, last update is 818 days ago.
This chrome extension places a dynamic overlay over the current tab so that web engineers can follow configured visual design guidelines at various window dimensions
You could download the latest version crx file or older version files and install it.
English (United States).
You could find more help information from design column overlay support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of design column overlay.
You could click to report abuse of design column overlay.