Decentraleyes is a free and open-source browser extension used for local content delivery network (CDN) emulation. Its primary task is to block connections to major CDNs such as Cloudflare and Google (for privacy and anti-tracking purposes), and serve popular web libraries (such as JQuery and AngularJS) locally on the user's machine. Decentraleyes is available for the Microsoft Edge, Mozilla Firefox + Firefox ESR, Google Chrome, Pale Moon and Opera web browsers.