Only supports .png, .jpg, and .gif.
The cache can never be purged. Renaming images is the only way to invalidated the cache.
https://www.cloudflare.com/
Free
Unlimited
N/A
⚡️Automatic Setup
𝐖 WordPress Supported
🔐 Third Party SSL Support
🗣Custom CNAME Support
🔨HTTP/2 Support
100 MB File upload limit. Additional fees for dedicated SSL certificates. May take up to 24 hours to activate.
https://www.stackpath.com
$10.00 monthly
1TB
Overages charged in 1TB increments
⚡️Automatic Setup
𝐖 WordPress Supported
🔐 Third Party SSL Support
🗣Custom CNAME Support
🔨HTTP/2 Support
The 1TB overage charges are usable for one calendar year.
https://aws.amazon.com/cloudfront/
$0.085 per Gigabyte
None
N/A
🔧Complex Setup
🆘 Support Required
𝐖 WordPress Supported
🔐 Third Party SSL Support
🗣Custom CNAME Support
This is likely the most cost-effective professional CDN but needs to be setup by a professional. Also its inherent complexity may make maintenance a challenge.
https://www.fastly.com/
$0.12 per Gigabyte
None
N/A
⚡️Automatic Setup
🔨HTTP/2 Support
🔐 Third Party SSL Support
🗣Custom CNAME Support
Shared SSL Certificates are $100.
https://www.keycdn.com/
$0.04 per Gigabyte
None
N/A
⚡️Automatic Setup
🔨HTTP/2 Support
𝐖 WordPress Supported
🔐 Third Party SSL Support
🗣Custom CNAME Support
KeyCDN is a fantastic value and integrates beautifully with WordPress websites.