I found a trick to use Google doc PDF handler to embed PDF on HTML directly

<iframe style="width: 98%; height: 400px;"
src="https://docs.google.com/gview?url=<PUT PDF URL FILE LOCATION HERE>&amp;embedded=true"
width="300" height="150" frameborder="0"></iframe>

Example:

Does it look nice? This just a plain and stupid right? However, it quite good, fast and no need to install any PDF reader script

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