When I tried with the Evernote clipper extension , I see a very useful feature. When I clicked on the βarticleβ, it gives me the really correct main content of the page. See the result when I used Evernote Clipper with the page https://developer.chrome.com/extensions/api_index 
I looked at the main article, in which all excerpts loom, on several pages, the article is infact, extracted from the first tag of the article. However, evernote clipper still works well with pages, does not use this tag.
I wonder how the Evernote clipper can do this. Is there support js library to detect the main tag containing the main content of the pages. Could you give me some tips to do this.
Thank you in advance!
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