Non HTTPS images

using the Spider I like just have a column to show me if a http element is used.
after a domain has been upgraded to https seems missed images not re-linked.

Unable to fathom this little chestnut.

Not sure I understand what you mean. Do you have a specific example?

I found a site to test with below.

https://www.bennish.net/mixed-content.html

If you use Chome browser on a website, which is https it will but some images are http it will show as an error. ie Not secure content. To say mixed-content

So I like know how to make the spider find for me any contents URLs on a domain which are as http and not https. Mostly images or internal links.

With a domain with 150 pages and 15 sites to check going to be a killed manually checking.

Hope this is clear.
thanks.