It's nice to see how long articles will take to read when looking at blogs/news so it gives you a chance to bookmark for later, or read now if you have the allotted time.
What it does
ReadTime shows the estimated read time for a Confluence page, in the top byline bar, alongside analytics and last updated date.
How I built it
I used the Forge framework to create the macro.
Challenges I ran into
The Forge framework is very new and in beta, so you're still extremely limited on things like styling/alignment etc. This severely hinders any complexity/customization.