What it does
LocalCDN is a browser extension that substitutes local copies of supported common web resources for requests to selected content-delivery networks.
LocalCDN addresses a narrow tracking surface: requests for common libraries hosted on third-party CDNs. Its page describes recognizing supported resources and substituting a local copy. Check the supported resource list and the page's troubleshooting guidance if a site behaves differently. This is not a replacement for a general tracker blocker, and it does not make every CDN resource available locally. Its value depends on the resources the visited sites actually request.
Strengths
- Local substitution for supported third-party library requests
Best for
- Browser users reducing selected CDN requests
Sources
- LocalCDN (Oct 26, 2026)