It is an alternative browser/interface that "shreds" existing websites.
One of the most famous literal "shredders over the web" is a piece of created by digital artist Mark Napier in 1998. Shredders over the web
The phrase can refer to several distinct concepts depending on whether you are looking for digital art, data privacy tools, or competitive gaming. 1. Web Art: "The Shredder" by Mark Napier data privacy tools
It was designed to challenge the "illusion of solidity" on the internet and reveal the raw, fluid nature of web code. 2. Data Privacy & Digital Shredding Shredders over the web