Over the last few years, I’ve heard countless stories from customers who have been surprised to learn that their CDN didn’t have Gzip enabled. It sounds crazy since Gzip is one of the simplest tricks to make your site load faster. CDNs promise to make your site faster, but they also charge by the byte.
Think about that.
CDNs make more money when they serve larger files, more frequently.
Why are CDNs not doing more to enable compression for their customers? Sadly, as it often turns out, to find the answer you simply need to follow the money. The larger the files you send, the more money your CDN makes. This puts their business goals directly at odds with their marketing that says they want to help make your website fast.
I decided to dig into the data to see how wide-spread the problem is. I recently shared the results on the Performance Calendar which is a great resource for anyone who cares about performance. If you use a CDN or have ever questioned if you’re getting the performance you’re paying for, I hope you’ll check out the full article.