Bookmarklet for multicolumn reader mode.
Visit anoved.github.io/Columnate and drag the Columnate link to your bookmarks bar to install.
Find a web page with a long article. Click the Columnate bookmarklet to reformat the page free of distractions. The article will be formatted in narrow columns like a newspaper.
Columnate uses Mozilla Readability. Columnate is a simplified rewrite of my earlier effort McReadability, which was based on a now-obselete predecessor of Mozilla Readability. Bookmarklet creation is modelled after Bookmarkletify by Martijn Brekelmans.
This project is released under an open source MIT License.