The concept is you can make rectangles over any website to generate a Bootstrap 12 col grid. No more class="row" or class="md-col-*" by hand [1][2] You can eve

The concept is you can make rectangles over any website to generate a Bootstrap 12 col grid. No more class="row" or class="md-col-*" by hand [1][2] You can even nest rectangles inside each other to create nested rows and cols. The source code is here: https://github.com/minutephp/bootstrapgridgenerator/ https://github.com/minutephp/bootstrapgridgenerator/ Sorry it asks permissions to run on all websites but it runs as event pages not background pages (so nothing happens until you click the "draw" button). I wish there was a less intrusive to get the same working with less permissions but I couldn't find it yet. Your comments and suggestions are welcome as always. Hope the designers will find it useful.. Happy hacking! :) [1] http://getbootstrap.com/css/#grid http://getbootstrap.com/css/#grid [2] Demo video: https://www.youtube.com/watch?v=CFEeVQsB9j8 https://www.youtube.com/watch?v=CFEeVQsB9j8