Simple Modify Headers is a free Chrome extension developed by didierfred. It falls under the category of Browsers and is listed as an Add-ons & Tools subcategory. This extension provides users with the ability to rewrite headers based on a rules table.

With Simple Modify Headers, users can effortlessly add, modify, or delete header fields for both HTTP and HTTPS requests or responses. The extension also offers the convenience of exporting and importing configurations in JSON format. Users can easily choose the URLs on which these modifications should be applied.

To enable these functionalities, Simple Modify Headers requires certain extension permissions. The storage permission is necessary to store the configuration, while the activeTab and tabs permissions allow the configuration screen to be displayed in the browser tab. Additionally, the webRequest, webRequestBlocking, and permissions are needed to modify the headers.