Alloyproxy -

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It rewrites Element.setAttribute , window.fetch() , and XMLHttpRequest to ensure that all requests made by a webpage are routed through the proxy. alloyproxy

Furthermore, the deployment of AlloyProxy requires trust. When a user routes their traffic through a web proxy, the server administrator technically has the ability to inspect that traffic. While AlloyProxy facilitates access, it places a burden of responsibility on both the host (to respect privacy) and the user (to understand the risks of routing sensitive data through a third party). : It rewrites Element

Based on marketing materials and user discussions, typical applications include: : It rewrites Element.setAttribute

It uses Base64 encoding for URLs to hide the destination from network filters.