diff --git a/src/background/events/injects/st_detect_inject.ts b/src/background/events/injects/st_detect_inject.ts
new file mode 100644
index 0000000..e7957e1
--- /dev/null
+++ b/src/background/events/injects/st_detect_inject.ts
@@ -0,0 +1,10 @@
+import { Module } from "../../../types/module"
+    
+export default <Module>{
+    action: async (base) => {
+        await chrome.scripting.executeScript({
+            target: { tabId: base.tab_id },
+            files: ["detect_schooltape.js"],
+        })
+    },
+}
diff --git a/src/background/events/on_update.ts b/src/background/events/on_update.ts
index a02ce50..7e8e383 100644
--- a/src/background/events/on_update.ts
+++ b/src/background/events/on_update.ts
@@ -8,6 +8,7 @@ import box_of_books from "./injects/box_of_books"
 import launcher_shortcut from "./injects/launcher_shortcut"
 import news_tracker_fetch from "./injects/news_tracker"
 import news_tracker_display from "./injects/display_history"
+import detect_schooltape from "./injects/st_detect_inject"
 
 const INJECTS = [
     dark_theme_css,
@@ -17,6 +18,7 @@ const INJECTS = [
     launcher_shortcut,
     news_tracker_fetch,
     news_tracker_display,
+    detect_schooltape
 ]
 
 export default async function on_update(tab_id: number, _: any, tab: chrome.tabs.Tab) {
diff --git a/src/background/set_default_settings.ts b/src/background/set_default_settings.ts
index 3d1bbec..25f0a95 100644
--- a/src/background/set_default_settings.ts
+++ b/src/background/set_default_settings.ts
@@ -29,3 +29,17 @@ export async function init_settings(): Promise<void> {
 
     await poll_feed()
 }
+
+export async function set_setting<K extends keyof Settings>(key: K, value: Settings[K]): Promise<void> {
+    const current_settings = await chrome.storage.sync.get("settings")
+    if (!current_settings.settings) {
+        console.error("Settings not initialized yet.")
+        return
+    }
+
+    const new_settings = {
+        ...current_settings.settings,
+        [key]: value,
+    }
+    await chrome.storage.sync.set({ settings: new_settings })
+}
diff --git a/src/content/auto_detection/detect_schooltape.ts b/src/content/auto_detection/detect_schooltape.ts
index 890d3aa..0c9ee7b 100644
--- a/src/content/auto_detection/detect_schooltape.ts
+++ b/src/content/auto_detection/detect_schooltape.ts
@@ -1,3 +1,5 @@
+import { set_setting } from "../../background/set_default_settings"
+
 async function main() {
     // create marker
     const marker = document.createElement("div")
@@ -8,17 +10,36 @@ async function main() {
     const observer = new MutationObserver(mutations => {
         for (let mutation of mutations) {
             if (mutation.type === "childList") {
-                // check for updated nodes
+                // check for added nodes
                 if (mutation.addedNodes.length > 0) {
-                    Array.from(mutation.addedNodes).some(node => node)
+                    Array.from(mutation.addedNodes).forEach(async node => {
+                        if (
+                            node.nodeType === Node.ELEMENT_NODE &&
+                            (node as Element).getAttribute("data-schooltape") === "stylesheet-themes"
+                        ) {
+                            console.log("[Schooltape Detection] Detected Schooltape stylesheet added to the page.")
+                            await set_setting("schooltape_compatibility", true)
+                        }
+                    })
+                }
+                // check for removed nodes
+                if (mutation.removedNodes.length > 0) {
+                    Array.from(mutation.removedNodes).forEach(async node => {
+                        if (
+                            node.nodeType === Node.ELEMENT_NODE &&
+                            (node as Element).getAttribute("data-schooltape") === "stylesheet-themes"
+                        ) {
+                            console.log("[Schooltape Detection] Detected Schooltape stylesheet removed from the page.")
+                            await set_setting("schooltape_compatibility", false)
+                        }
+                    })
                 }
             }
         }
     })
+    observer.observe(document.head, { childList: true, subtree: true })
 }
 
-//8=========D
-
 const marker_elem = document.querySelector("[data-ultrabox-schooltape-marker]")
 if (!marker_elem) {
     main()
diff --git a/webpack.config.cjs b/webpack.config.cjs
index effc87b..35c3189 100644
--- a/webpack.config.cjs
+++ b/webpack.config.cjs
@@ -25,6 +25,7 @@ module.exports = (env, argv) => {
             history_puller: "./src/content/modules/post_history_tracking/puller.ts",
             detect_domain: "./src/content/auto_detection/detect_domain.ts",
             detect_rss_feed: "./src/content/auto_detection/detect_rss_feed.ts",
+            detect_schooltape: "./src/content/auto_detection/detect_schooltape.ts",
         },
 
         output: {