HTTPS mixed content checker (single page)

Usage example:

const httpschecker = require('httpschecker');

httpschecker.check('https://very.badssl.com/', (err, mixedContent) => {
    if (err) {
        console.log('Error:', err);
        return;
    }

    console.log('Found mixed content:', mixedContent);
});

Also, to check just if a website even supports https, check out https-checker.

For a much more powerful & full website crawl, check out: HTTPS Checker.