This did exactly what you want it to on tumblr. Stopped the PC draining infinite scroll and puts simple page arrows in the bottom right corner. Simple, effective, thanks!

Works like a charm, thanks!

Thanks again ... (after Blacken)
Your addon is quite useful to defeat a large band of infinite morons who design/love infinite scroll.
Works well with Firefox v58 + v59 as of today
The only minor thing I would suggest is larger buttons at the bottom of the page.

Hi, for tumblr works like a charm but I was wondering if you could help me for Instagram? There is no exception button and have it on Instagram like it works on tumblr would be very handy, still a great add-on, thank you and hope that you can help me. If there is something that can be done to have page instead of load more.

the best! in the left end of the page, there are two buttons which let you to turn the page!!!