Sidestep

Is Sidestep protecting you?

Most websites pull shared code libraries from a handful of big content delivery networks. Those networks can log your IP address and every site you visit. This page asks for twelve of the most common libraries and checks, for each one, whether Sidestep served it from your device instead.

Checking…

Requesting popular libraries.

Popular libraries

Sidestep covers 206 libraries across 28 content delivery networks, not just the twelve tested here.

Google Hosted LibrariescdnjsjsDelivrjQuery CDNMicrosoft AjaxBootstrap CDNFont AwesomeBaiduYandexTencentSinaand 17 more

How it works

A content delivery network hosts libraries like jQuery for millions of sites. Normally your browser fetches them from that network on every page, and the network can quietly build a picture of your browsing.

Sidestep keeps an identical copy of each library on your device and serves that instead. A green On your device tag means the request never left your computer, so the network was never contacted and has nothing to log. Sidestep makes no network requests of its own.