Sharing graphs from HA to whatever

Configuration
1

Hi, I want to share graphs from HA to other people without sharing my HA instance.
Is this possible?

The idea is:

  1. create graph automatically (with an automation)
  2. copy graph to designated folder (local will be perfect) with default name
  3. share graph to WhatsApp

At the moment I can share graphs from local folder to WhatsApp so step 3 is covered but I am struggling with the first 2 steps. Any ideas are most welcome.