I know I should have known about the W3C link checker: https://validator.w3.org/checklink/docs/checklink#wait but unfortunately I didn't, at that is a shame. It is great little tool and free for check for broken links. Example of it 'in action' The results are shown in summary and in more detail Useful tool and automatic once you enter the URL and press check. The link to the tool is: https://validator.w3.org/checklink/docs/checklink#wait
Concerned with investigating appropriate methods to 'rescue' at risk web resources in a sustainable form.