Paid Cloudflare Plans include more features than a free. Some key features are:
Free support for Cloudflare's SSL
Web Application Firewall (WAF)
Image Optimization features called Mirage and Polish
Customization of Cloudflare error pages
The ability to create additional Page Rules. Page Rules can be used to do the following:
- Turn Cloudflare's caching off on certain URLS
- URL forwarding a 301 or 302 redirect
- Extend Cloudflare's caching capabilities.