Thank you so much for this fix. I just could not get QR codes sharp in a docx document.

First I used .png files using segno and did "add_picture" in python-docx. The .png images are sharp, but the add_picture resizes and blurs it all. Result is a rescaled and blurred image in the .docx.

Now I make .svg files using segno and I use your branch (https://github.com/takis/python-docx.git, master) to do the add_picture and it is now spot on; no blurring, sharp as anything.

You saved my day ! Thanks again.