The Articles of Impeachment as a pdf document can be open and saved in the link shown below. It’s only 9 pages. Many have commented on the narrow focus of the articles is likely to keep them simple for the public to understand. I agree but I suspect there are other reasons. Due to the Republican majority in the Senate, it is a foregone conclusion that Senate will vote to acquit the President on all charges. It’s just the way a political trial goes. If there had been more articles, there would have been more acquittals. The Senate vote will be a sad day, as Donald Trump will be celebrating his victory over the “Dems” as broadcasted over Fox News, it will reinforce the idea that all this was one big “witch hunt.” The vote will just political, as the evidence makes a powerful case for Trump to be found guilty.
The inquiry proceeded rapidly. Adam Schiff made a good point, that to work through the courts to compel appearances by the witnesses and production of documents would likely have given Donald Trump an extra year to continue the abuse of power. A second reason is political. Democratic candidates such as Elizabeth Warren and Bernie Sanders need to be free to campaign and not held captive to impeachment proceedings. Donald Trump had started with big rallies in the swing states, such as Florida, while Democrats are focused on the primary races.