Google Script | Website Checker with sheet logger

I want to create Google Script inside a spreadsheet that would test and verify the following features inside a variety of Websites(also links provided from a sheet). All Test results should be logged into the spreadsheet. The test should repeat itself every day, and the results should be comparable to each other:

All checks should be modular written in separate functions.

1. Do all links and sub-page links on the given Website work. If not, report to sheet not working.
2. Is the Certificate of the given Website actual.
3. What is the loading speed of a specific Website.
4. Does the Website throws any errors?
5. It should retrieve the Websites Console Log and save it into a sheet.
6. It should check if the given spreadsheet is publicly accessible and return into the sheet all editors.
7. It should compare Visually Pages on all screens(Mobile, Desktop, etc.) and notify if changes or issues compared to the previous day's test. The website should store the actual images on the gdrive.
8. Are any images/assets missing? Not being load etc

Example Website to check websheet.cc, templates.websheet.cc

The requirements may change a little bit during the project.