fix readme

README.md

@@ -2,6 +2,6 @@
 
 This is a _very_ simple extension for Vivaldi (or other Chromium-based browsers, although I would appreciate not using it with Chrome) that allows you to escape certain websites by redirecting them to better alternatives.
 
-For now, it redirects Youtube to a [Invidious](https://invidious.io) instance (currently [yewtu.be/](https://yewtu.be/)) and Twitter (X…) to a [Nitter](https://github.com/zedeus/nitter) instance (currently [xcancel.com](https://xcancel.com)).
+For now, it redirects Youtube to a [Invidious](https://invidious.io) instance (currently [https://invidious.nerdvpn.de](https://invidious.nerdvpn.de)) and Twitter (X…) to a [Nitter](https://github.com/zedeus/nitter) instance (currently [xcancel.com](https://xcancel.com)).
 
 If you want to add any other redirects, you should be able to just copy-paste and do that. If you have any questions, just open an issue or email me.

service-worker.js

@@ -1,3 +1,6 @@
+const youtubeAlternative = 'https://invidious.nerdvpn.de'
+const twitterAlternative = 'https://xcancel.com'
+
 chrome.webNavigation.onBeforeNavigate.addListener(({ url, tabId, frameType }) => {
     if (frameType === 'sub_frame') return
 
@@ -6,12 +9,12 @@ chrome.webNavigation.onBeforeNavigate.addListener(({ url, tabId, frameType }) =>
         const videoId = match[4] ?? match[6]
         chrome.tabs.update(
             tabId,
-            { url: `https://yewtu.be/watch?v=${videoId}` }
+            { url: `${youtubeAlternative}/watch?v=${videoId}` }
         )
     } else {
         chrome.tabs.update(
             tabId,
-            { url: `https://yewtu.be` }
+            { url: `https://invidious.nerdvpn.de` }
         )
     }
 }, {
@@ -28,7 +31,7 @@ chrome.webNavigation.onBeforeNavigate.addListener(({ url, tabId, frameType }) =>
     const path = match[1]
     chrome.tabs.update(
         tabId,
-        { url: `https://xcancel.com/${path}` }
+        { url: `${twitterAlternative}/${path}` }
     )
 }, {
     url: [