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Sometimes when analyzing web pages or debugging our own pages built with bundler (like webpack), it would be convenient if the page is ready for jQuery or other libraries.
Sometimes we want to try some CSS styles in our small static pages without a CSS library/framework. Maybe you need to dynamically load a CSS library.
This extension has only one simple purpose: to inject JS/CSS libraries from CDN. There are some libraries ready: jQuery, lodash, axios and Bootstrap. It's very easy to inject a preset of libs, and JS files could be injected one by one(load next when previous ready), also prevent to inject duplicated URLs.