This script autofills forms for you. How to use:

1. Fill fields in the script e.g. const firstName = "John";
2. Open web page to fill in (e.g. https://www.google.com)
3. Open development console in the browser (Option-Command-C for Safari)
4. Copy and paste the script into the console fill_form.js
5. Press enter
6. Fix any fields that are not filled in correctly