What are some best practices to clean up http mix content warnings?

From your screenshot, it looks like you are displaying images from another website (nga.gov), for example:

http://images.nga.gov/?service=asset&action=show_preview&asset=120079

After checking out the links with the mixed content warning, I can see that SSL is set up for this website, which is good. However, their links still default to HTTP, for whatever reason.

To fix this on your end, simply change the protocol from http:// to https://.

https://images.nga.gov/?service=asset&action=show_preview&asset=120079

You shouldn’t get a warning once you manually update the links to the HTTPS protocols.

Additionally, you can consider using a plugin such as Remove HTTP which strips the protocols from all of your URLs to help fix your mixed content warnings.

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