Click here to download the latest version of Sketchup. If you have Sketchup 2013 or newer, you will be able to access to the extension warehouse.How to Install Extensions Method 1: Automatic Additionally, by default, extensions can be toggled on and off while plugins cannot. Where a plugin is a bandage to a current pain or problem, extensions are usually longer term solutions. Most times these are developed by 3rd parties. Plugins are bits of code that can be added into Sketchup after the initial install to provide additional features.Example: Distance, Move, Push/Pull, Rotate, etc. That means the stuff that you can use right after you install the program. Toolsare anything that is built into the Sketchup software.The Difference Between Tools, Plugins, & Extensions When Referring to Sketchup Finally, I’ll teach you how to install plugins and give some resources on where you can find plugins and extensions on your own. After that’s clear, I’ll take you through step by step on how to install extensions the automatic and manual way. It’s important that you learn the difference between tools, plugins, and extensions so moving forward you’re not confused about what’s what. Learning how to install Sketchup plugins and extensions can immensely increase your productivity, but it isn’t so intuitive. More by Tony How to Install Sketchup Plugins & Extensions and Increase Your Productivity