Thanks! I used Screen Studio for the demos (https://screen.studio). I had to pay for it but I couldn't find the zoom+highlight feature anywhere else.
Regarding Heroku - I loved Heroku the first time I used it so I set up my Kubernetes cluster to work in a similar way (`git push` to deploy to production). I know K8s has a reputation for being useful only for large deployments/large teams but in my experience this isn't true. You can run a single node cluster and use it to host multiple projects all sharing the same load balancer, or you can scale up to thousands of machines with many microservices working together internally. Would it be helpful for you to see a HOWTO for setting up a Heroku-like K8s cluster?
Regarding Heroku - I loved Heroku the first time I used it so I set up my Kubernetes cluster to work in a similar way (`git push` to deploy to production). I know K8s has a reputation for being useful only for large deployments/large teams but in my experience this isn't true. You can run a single node cluster and use it to host multiple projects all sharing the same load balancer, or you can scale up to thousands of machines with many microservices working together internally. Would it be helpful for you to see a HOWTO for setting up a Heroku-like K8s cluster?