Copy a webpage as a PDF to the clipboard on iPhone

Sometimes I want to share a webpage with an LLM on my iPhone but the page requires a login.

It turns out you can “print to PDF” directly to the clipboard on iPhone. This makes it easy to share whatever page you have access to with an LLM. This trick was probably obvious to everyone else, but I just discovered (well, probably rediscovered) it yesterday.

I use Firefox, but it should work in Safari or any other browser on your iPhone:

Share → Print → Share → Copy

Then you can paste it as a PDF into whichever app you like, without having to save an intermediate file.