Perks of being a tech person....

Amazon return label breaks and going in to another page... hit F12 ... delete the worthless text on the page and print... :D

Yeah, there are countless times (which I don't remember exactly) where I thought: "probs to me for being a tech guy". E.g. Some inputs on I website were disabled (I guess just some JS error). So just removing the disabled attribute or changing the value directly and then I was able to save them.
Or removing some annoying pop-ups or anything you can't close easy.
There are countless advantages.

Delete all the useless stuff from the PDF before printing a boarding pass. (looking at you, ryanair)