⚡ Public CDN
Public CDNs are content delivery networks that cache and serve commonly used web assets, such as open-source 
JavaScript libraries, fonts, and 
CSS frameworks, to the public at no cost.
By hosting static resources like 
jQuery, 
Bootstrap, or 
React, they reduce bandwidth costs for websites and accelerate page load times for end users through geographic proximity.
According to our research, public CDNs are used on 35.2% of all websites.
65.5% of these sites use only one public CDN, 20.3% use two, and 14.2% use three or more simultaneously.
⭐ Most Popular in 2026
The following chart shows the leading public CDNs in 2026, based on market share.
The most popular is 
Gstatic with a substantial share of 52.4%, followed by 
Cdnjs with 26.7% and 
Google Hosted Libraries with 22.5%.
- Gstatic 52.4%
- Cdnjs 26.7%
- Google Hosted Libraries 22.5%
jsDelivr 19.1%BootstrapCDN 13.2%
- jQuery CDN 11.6%
Unpkg 6.8%
Ionic Framework CDN 0.9%
Microsoft Ajax CDN 0.7%Yastatic 0.4%
RawGit 0.3%
Baidu Libs 0.2%FlagCDN 0.1%
Staticfile CDN 0.08%JSPM 0.05%
You can also drill down by country:
🚀 Country Highlights
Here is a list of public CDNs that are especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.
- Cdnjs is #1 in Thailand (-1)
- Google Hosted Libraries is #1 in Japan (-2)
- jsDelivr is #1 in Korea (-3)
- jQuery CDN is #3 in Bangladesh (-3)
- Unpkg is #3 in Iran (-4)
- Baidu Libs is #3 in China (-9)
- Microsoft Ajax CDN is #8 in the United States (-1)
✨ Best Public CDNs
Below is a more detailed list of 19 public CDNs we track, ranked by their market share.
Githack👉 See Also
- ✨ Related technologies
- ⚡CDN
- ⚡JavaScript libraries
Content delivery network
🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,359,906 websites.
- We currently track the presence of 19 public CDNs across the web.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.