Popular articles
Bunny Fonts or Google Fonts - Performance Comparison
Sep 20 2023Which webfont service is best from a site speed perspective? Read our in-depth comparison of Google Fonts and Bunny Fonts performance.
Site Speed of CDN Websites
Sep 08 2023How fast are the websites of content delivery networks like Cloudflare, Fastly, Gcore and CacheFly? Let's find out using July 2023 Core Web Vitals data.
StackPath CDN Shut Down: Alternatives?
Sep 04 2023StackPath CDN is shut down November 2023. What are some good StackPath CDN alternatives?
Introducing CDN Purge Speed Stats
Sep 01 2022How fast you can purge a cached object on Amazon CloudFront, CacheFly and other CDNs? Our CDN Purge Speed Stats has the answer based on hourly, global measurements.
Cloudflare Browser Insights Review
Apr 13 2021In-depth review of Cloudflare Browser Insights, a site speed analytics service for Core Web Vitals and more.
Our Cloudflare Workers and Workers KV Wishlist
Dec 08 2020New capabilities, changes to limits and analytics improvements: ten things we want from Cloudflare to make Workers and Workers KV even better.
The All New CDN Finder
Jun 24 2020Reliable, fast and accurate. The popular CDN Finder tool has been completely rebuilt in 2020 and now delivers excellent results.
Introducing the CDN Performance Checker tool
Mar 12 2018Check your CDN's performance from 10 residential locations around the world, including Brazil, France and India.
CDN Debugging Tips: Part 1
Aug 11 2017In this first article in our series about CDN debugging, we share three tips for collecting useful data. Good data is essential when trying to find the problem with your CDN's content delivery.
CDN market news and announcements in June 2017
Jul 05 2017Learn what happened in the CDN market in June 2017.
CDN market news and announcements in May 2017
Jun 15 2017A new product offering, network expansion and a big funding round. Learn what happened in the CDN market in May 2017.
CDN market news and announcements in April 2017
May 01 2017New product offerings, network expansions and an acquisition. Learn what happened in the CDN market in April 2017.
10 Tips to Optimize CDN Performance
Apr 26 2017What can you do to optimize CDN performance? Learn about ten ways to effectively enhance content delivery speed and reliability.
Faster Google Fonts with Preconnect
Apr 24 2017Improve the speed and performance of Google Fonts. Learn what the preconnect hint is and how it works.
CDN behavior testing with Dummy Origin
Apr 05 2017Dummy Origin makes it easier to evaluate the (caching) behavior of a CDN. Open source, easy to install and a joy to use.
Introducing CDN Guides
Mar 12 2017CDN Planet introduces CDN Guides: informational articles about Content Delivery Network features like compression, purge and serve stale.
Root domain on CDN and performance
Mar 11 2017When using your root/apex domain on a CDN, don't simply expect excellent performance.
How to protect your CDN origin server
Mar 18 2013How can you protect your CDN origin servers from malicious attacks, incl. DDoS attacks? We describe a few options, with one being the clear winner.
Real-world CDN performance for Google DNS and OpenDNS users
Oct 18 2012Number 3 in a series of 3 blog posts gives insight in the relative performance the CDNs deliver to Google DNS and OpenDNS users in different countries.
Which CDNs support edns-client-subnet?
Oct 17 2012Number 2 in a series of 3 blog posts: what is edns-client-subnet, how is it relevant to CDN performance and which CDNs currently support it?
A better CDN Finder
May 29 2012Our easy to use and popular CDN Finder tool has been rebuilt from the ground up, resulting in much better results. Read about the changes we made, how it is built and how the user benefits.
How to test your CDN before go live
May 01 2012When turning on a CDN for your site, make sure to test your config/setup actually works. If you don't, you can be in big trouble. We show you 4 ways to do this testing and number 1 is clearly not our favourite...
Turbobytes: multi-CDN made easy
Apr 25 2012Turbobytes is a new and innovative multi-provider CDN platform that load balances amongst CDNs based on performance, enabling publishers, webshops and others to get optimal performance worldwide. Great pricing, a friendly Cancel-Anytime policy and no need for your own contracts with several CDNs.
Google DNS, OpenDNS and CDN performance
Feb 16 2012Find out how popular the Google Public DNS and OpenDNS services are in countries across the globe based on millions of real-user tests.
Announcing the CloudFront Purge Tool
Jan 23 2012Currently, you cannot purge files from CloudFront via the AWS console, which means you always have to do it via the API. The CloudFront Purge Tool, a Chrome extension, takes away the hassle of using the AWS API, and enables you to quickly purge one or more files. Yes, it is secure.
How to do an effective trial with a CDN
Jan 11 2012You are in the process of selecting a Content Delivery Network and have a shortlist of candidates. Next step: do a trial with them. How can you best do a trial with a CDN? Read our tips.
Initcwnd settings of major CDN providers
Nov 30 2011Initcwnd is one thing to tweak on the server to improve TCP performance. What is the initcwnd value of CDN providers? Find out what our tests in Feb 2017 show and learn how we tested.
Tuning initcwnd for optimum performance
Oct 25 2011Tuning the initial congestion window parameter (initcwnd) on the server can have a significant improvement in TCP performance, resulting in faster downloads and faster webpages. Get an in-depth understanding of TCP slow start and how to tune for performance.
Browser cachability issues with CloudFront
Oct 11 2011In this post, I intend to illustrate some potential issues with browser cachability when using Amazon CloudFront and some possible work-arounds. These are some issues all CloudFront users should be made aware of. Sending stale responses to users may have a big impact on user experience.
Compare CDNs, side-by-side
Oct 10 2011By popular demand, we now provide an easy way to compare two CDNs, side-by-side on a single page. No bells, no whistles, just all the useful info about the CDNs.
How to Select a CDN
Oct 03 2011Your goal is to select the Content Delivery Network that is a perfect fit with your needs and requirements. Learn about the 4 categories of selection criteria (functionality, performance, costs and service) and read our tips on how to effectively and efficiently go through the selection process.
CloudFront, nginx and gzip: not that simple
Oct 03 2011CloudFront's request to origin servers are marked as HTTP/1.0. By default nginx does not send gzipped response to a HTTP/1.0 request. gzip_http_version setting should be set to 1.0 for it to work correctly.