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Performance Audit 2017: New Loader Snippet without IFRAME #164
The Boomerang Loader Snippet has a cost, more than a regular
We should investigate alternative ways of loading Boomerang in an asynchronous, non-blocking manner.
@bluesmoon and others have been investigating this.
A preload-based snippet could look something like: http://jsbin.com/sobacusizu/1/edit?html,console,output