Clicking the extension icon opens a popup where you can provide an API key from libraries.io that you can get from here. This API key allows the extension to make bulk requests instead of single ones which improves the experience greatly. Encountering projects with too many dependencies now works correctly. It is a little unpleasant, but getting an API key is worth it. npmhub is great, but why should npm have all the fun? I wanted to see if I could implement something similar while making it easy to add support for other package managers. Also, to make it more fun, I decided to accomplish this without any fancy libraries (jQuery) or apis (fetch). So, packagehub should have support for most browsers in use today.