Header-Editor

Unable to remove the original header value from the original request / response, and the popup design is not very ergonomic.

This how to view response headers: var req = new XMLHttpRequest(); req.open('GET', document.location, false); req.send(null); var headers = req.getAllResponseHeaders().toLowerCase(); alert(headers);

If you set a header it works the first time (on the server, you can see the header arriving). But then, if you alter the header value, it still sends the original value. It kept sending a particular value even after I deleted that header. Maybe you are supposed to restart the browser after changes but I'm not going to do that.

Works like a charm, thanks! The one review here with 3 stars can simply be ignored. If that guy'd be able to read, he'd notice that this extension's description clearly says it's for request headers only. #wtf

Finally I found the one that suits me. Useful and clean.

Adding request headers works. but not response headers.

Super!

Simple to use and works perfectly.