With my full respect I have already tried it before it has some blocks not working like "set custom font in range" and "set image in range" it always gives that the file not available in assets 
I'm just saying this as feedback so I won't be misunderstood
And in my extension when I create hyperlink l don't want an event function to listen to clicks on the hyperlink the link automatically opened in browser ,
Also it has option to replace images not only from assets and local paths but also from their URLs.
Any one try it and these worked with him ?