Is there an extension or program to edit browser http headers?

Question

Google Chrome

I wonder if there is an extension for Google Chrome / Mozilla Firefox or a program for Windows that would allow editing the http headers sent by the browser?
The options that I was looking for in search engines are non-working.

Answer 1

Usually fiddler is used for this . There are several options:
1. set breakpoints on requests and edit the response before giving it to the client.
2. manually write the request with the headers you need.
3. replace the server response with another file
4. Connect heavy artillery - JavaScript and programmatically change requests / responses.
There are plenty to choose from.