Hi,
I do use Cloudflare free on on one of my websites.
I want to use the free version on another website, that already has a ssl certificate on it. Can I use cloud flare free CDN on it? (website: www.gadgetbridge.com)
You can, and it won’t “conflict”, but because Cloudflare is a Reverse Proxy, your visitors will go through a Cloudflare server that has its own TLS certificate for your domain.
As a proxy server, it then connects to your server securely because you have your own TLS certificate there.