Inject and override HTTP request headers. Simply.
Header Inject allows developers to inject custom HTTP headers into HTTP requests, as well for pre-existing HTTP request header values to be overridden. After installation, access Header Inject's quick options panel by clicking the extension's icon, or open its options tab, to configure custom HTTP headers and to enable HTTP header injection, which is disabled by default when the extension is first installed. Header Inject uses Chrome's synchronised storage mechanism, meaning its configuration is automatically synchronised to any Chrome browser that you are logged in to. Header Inject will always respect your privacy.