307 Redirect Pro от Nohu90

This extension intercepts network requests "on the fly", and causes the browser to use a different URL to load a file.

This allows you to swap files on pages without having to change source code or upload/push changes.

Works for scripts, images, css, or any other file transferred over the network.

Features:

• Replace URLs
• Block URLs
• Regular Expression compatible (regexp, wildcards)
• Disable / block source files
• Toggle Individual items on/off
• Drag and drop to re-arrange items
• Export/Import for sharing
• Color code items to quick-reference related items
• Duplicate item

About:

Traditionally, web servers have a mechanism to redirect resources at the server-level, known as "307 Temporary Redirect", which provide a "307" status code to the browser. Server-level redirects are altogether different animals than browser-based redirects, but the end result is the same -- the browser does not fetch the original resource, it fetches the resource that the redirect is pointing at.

This extension provides the same functionality as server redirects, but at the browser level -- allowing local and AB testing without having to alter source code, nor push updates to a server.