const oldReddit = "https://old.reddit.com"; chrome.webRequest.onBeforeRequest.addListener( function(details) { // Exclude poll pages if (details.url.match(/^https?:\/\/(www\.)*reddit.com\/poll/)) { return; } return { redirectUrl: oldReddit + details.url.match(/^https?:\/\/[^\/]+([\S\s]*)/)[1] }; }, { urls: [ "*://reddit.com/*", "*://www.reddit.com/*", "*://np.reddit.com/*", "*://new.reddit.com/*", "*://amp.reddit.com/*", ], types: [ "main_frame", "sub_frame", "stylesheet", "script", "image", "object", "xmlhttprequest", "other" ] }, ["blocking"] );