ChromeDash is an extension that supports the latest version of Google Chrome. It allows you to create your own aliases as you type in the browser's address bar. Just enter two dashes (hyphens) for an en–dash, and three for an em–dash!

All you need to do is to install the extension, then click on the icon and choose the options you want. You can even make use of various alias packs, including Greek, accents, and math symbols!

Once you're done customizing aliases, you can see all of your dashes, or you can use the history.

Do note that this is an open-source extension, which is not compatible on incognito mode.