• Protects privacy by evading large delivery networks that claim to offer free services.
• Complements regular blockers such as uBlock Origin, Privacy Badger, et al.
• Works directly out of the box; absolutely no prior configuration required.

Decentraleyes is no silver bullet, but it does prevent a lot of websites from making you send these kinds of requests. Ultimately, you can make Decentraleyes block requests for any missing CDN resources, too.