I totally agree, scan everything and give them if you can. I know there was a lot of argument on this issue on the forum, but I went with my gut feeling and I scanned every single page of my passport.
Please scan all pages .
I have 2 passports and scanned everything
Use 150 dpi settings . It is very clear when scanned
each of my passport came around 1.3 MB only
Before everyone gets all paranoid on this, do share the CIC reference where they ask for stamps/markings/blank pages (from expired passports even!) from an applicant. And while we're at it, do share the forum reference of the member who got refused only because they didn't upload their blank passport pages.
Let's try and keep the forum properly informed with cited source material - there is enough misinformation already.