Hello @vsodhani
You can follow below link for your reference:
https://stackoverflow.com/questions/18327314/how-to-allow-http-content-within-an-iframe-on-a-https-s...
1. You can try with google proxy:
https://www.google.com/search?q=%http://yourhttpsite.com&btnI=Im+Feeling+Lucky
2. Create your own redirect script on an https page you control (a simple javascript redirect on a relative linked page should do the trick. Something like: (you can use any language/method)
https://example.com That has an iframe linking to...
https://example.com/utilities/redirect.html Which has a simple js redirect script like...
document.location.href ="http://thenonsslsite.com";
Manish Mittal
https://www.manishmittal.com/