diff --git a/package-lock.json b/package-lock.json
index 06decd6..61f2565 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,7 @@
         "puppeteer": "^24.32.0",
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         "slack-notify": "^2.0.7"
       }
     },
@@ -44,6 +45,357 @@
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+      },
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+      },
+      "funding": {
+        "url": "https://opencollective.com/libvips"
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+      "resolved": "https://registry.npmjs.org/@img/sharp-win32-ia32/-/sharp-win32-ia32-0.33.5.tgz",
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+      "cpu": [
+        "ia32"
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+      "os": [
+        "win32"
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+      "resolved": "https://registry.npmjs.org/@img/sharp-win32-x64/-/sharp-win32-x64-0.33.5.tgz",
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+      "cpu": [
+        "x64"
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+      "optional": true,
+      "os": [
+        "win32"
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+      },
+      "funding": {
+        "url": "https://opencollective.com/libvips"
+      }
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     "node_modules/@isaacs/cliui": {
       "version": "8.0.2",
       "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
@@ -584,6 +936,18 @@
         "node": ">=0.10.0"
       }
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+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/color/-/color-4.2.3.tgz",
+      "integrity": "sha512-1rXeuUUiGGrykh+CeBdu5Ie7OJwinCgQY0bc7GCRxy5xVHy+moaqkpL/jqQq0MtQOeYcrqEz4abc5f0KtU7W4A==",
+      "dependencies": {
+        "color-convert": "^2.0.1",
+        "color-string": "^1.9.0"
+      },
+      "engines": {
+        "node": ">=12.5.0"
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     "node_modules/color-convert": {
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       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -602,6 +966,15 @@
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       "license": "MIT"
     },
+    "node_modules/color-string": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/color-string/-/color-string-1.9.1.tgz",
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+      "dependencies": {
+        "color-name": "^1.0.0",
+        "simple-swizzle": "^0.2.2"
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@@ -739,6 +1112,14 @@
         "node": ">=0.4.0"
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+      "engines": {
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@@ -2355,6 +2736,44 @@
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+      "dependencies": {
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+        "detect-libc": "^2.0.3",
+        "semver": "^7.6.3"
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+        "@img/sharp-libvips-darwin-arm64": "1.0.4",
+        "@img/sharp-libvips-darwin-x64": "1.0.4",
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+        "@img/sharp-libvips-linux-arm64": "1.0.4",
+        "@img/sharp-libvips-linux-s390x": "1.0.4",
+        "@img/sharp-libvips-linux-x64": "1.0.4",
+        "@img/sharp-libvips-linuxmusl-arm64": "1.0.4",
+        "@img/sharp-libvips-linuxmusl-x64": "1.0.4",
+        "@img/sharp-linux-arm": "0.33.5",
+        "@img/sharp-linux-arm64": "0.33.5",
+        "@img/sharp-linux-s390x": "0.33.5",
+        "@img/sharp-linux-x64": "0.33.5",
+        "@img/sharp-linuxmusl-arm64": "0.33.5",
+        "@img/sharp-linuxmusl-x64": "0.33.5",
+        "@img/sharp-wasm32": "0.33.5",
+        "@img/sharp-win32-ia32": "0.33.5",
+        "@img/sharp-win32-x64": "0.33.5"
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@@ -2388,6 +2807,19 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/simple-swizzle": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.4.tgz",
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+      "dependencies": {
+        "is-arrayish": "^0.3.1"
+      }
+    },
+    "node_modules/simple-swizzle/node_modules/is-arrayish": {
+      "version": "0.3.4",
+      "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.3.4.tgz",
+      "integrity": "sha512-m6UrgzFVUYawGBh1dUsWR5M2Clqic9RVXC/9f8ceNlv2IcO9j9J/z8UoCLPqtsPBFNzEpfR3xftohbfqDx8EQA=="
+    },
     "node_modules/slack-notify": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/slack-notify/-/slack-notify-2.0.7.tgz",
diff --git a/package.json b/package.json
index cc04403..583f469 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
     "puppeteer": "^24.32.0",
     "puppeteer-extra": "^3.3.6",
     "puppeteer-extra-plugin-user-preferences": "^2.4.1",
+    "sharp": "^0.33.0",
     "slack-notify": "^2.0.7"
   }
 }
\ No newline at end of file
diff --git a/test/korap-ui.js b/test/korap-ui.js
index 9fc736c..a0bc274 100644
--- a/test/korap-ui.js
+++ b/test/korap-ui.js
@@ -32,17 +32,52 @@
 }
 
 // Function to send message to Nextcloud Talk
-async function sendToNextcloudTalk(message, silent = false) {
+async function sendToNextcloudTalk(message, silent = false, screenshotPath = null) {
     if (!nc_talk_conversation || !nc_talk_secret) {
         return;
     }
 
     try {
         const axios = require('axios');
+        const fs = require('fs');
+        const sharp = require('sharp');
+        
+        let fullMessage = message;
+        const MAX_MESSAGE_LENGTH = 32000; // Nextcloud Talk message size limit
+        
+        // If a screenshot path is provided, try to embed it
+        if (screenshotPath && fs.existsSync(screenshotPath)) {
+            try {
+                // First, try to resize the image to reduce size
+                const resizedBuffer = await sharp(screenshotPath)
+                    .resize(800, null, { // Resize to max width of 800px, maintain aspect ratio
+                        withoutEnlargement: true,
+                        fit: 'inside'
+                    })
+                    .png({ quality: 80, compressionLevel: 9 })
+                    .toBuffer();
+                
+                const base64Image = resizedBuffer.toString('base64');
+                const dataUri = `data:image/png;base64,${base64Image}`;
+                const messageWithImage = `${message}\n\n![Screenshot](${dataUri})`;
+                
+                // Check if the message with image fits within the limit
+                if (messageWithImage.length <= MAX_MESSAGE_LENGTH) {
+                    fullMessage = messageWithImage;
+                    console.log(`Screenshot will be embedded (message size: ${messageWithImage.length} chars)`);
+                } else {
+                    console.log(`Screenshot too large (${messageWithImage.length} chars), sending text-only notification`);
+                    fullMessage = `${message}\n\n_Screenshot available locally but too large to embed (${Math.round(messageWithImage.length / 1024)}KB)_`;
+                }
+            } catch (imageError) {
+                console.error('Failed to process screenshot for Nextcloud Talk:', imageError.message);
+                fullMessage = `${message}\n\n_Screenshot available locally but could not be processed_`;
+            }
+        }
         
         // Generate random header and signature
         const randomHeader = crypto.randomBytes(32).toString('hex');
-        const messageToSign = randomHeader + message;
+        const messageToSign = randomHeader + fullMessage;
         const signature = crypto.createHmac('sha256', nc_talk_secret)
             .update(messageToSign)
             .digest('hex');
@@ -51,7 +86,7 @@
         await axios.post(
             `${nc_talk_url}/ocs/v2.php/apps/spreed/api/v1/bot/${nc_talk_conversation}/message`,
             {
-                message: message,
+                message: fullMessage,
                 silent: silent
             },
             {
@@ -110,6 +145,19 @@
 
     afterEach(async function () {
         if (this.currentTest.state == "failed") {
+            // Only take screenshot if it's not one of the initial connectivity/SSL tests
+            const initialTestTitles = [
+                'should be reachable',
+                'should have a valid SSL certificate'
+            ];
+            let screenshotPath = null;
+            
+            if (!initialTestTitles.includes(this.currentTest.title) && page) {
+                screenshotPath = "failed_" + this.currentTest.title.replaceAll(/[ &\/]/g, "_") + '.png';
+                await page.screenshot({ path: screenshotPath });
+            }
+
+            // Send notification to Slack
             if (slack) {
                 try {
                     slack.alert({
@@ -132,30 +180,14 @@
                 }
             }
 
-            // Send notification to Nextcloud Talk
-            if (nc_talk_conversation && nc_talk_secret) {
-                try {
-                    const message = `🚨 Test on ${KORAP_URL} failed: **${this.currentTest.title}**`;
-                    await sendToNextcloudTalk(message);
-                } catch (ncError) {
-                    console.error('Failed to send notification to Nextcloud Talk:', ncError.message);
-                }
-            }
-
-            // Only take screenshot if it's not one of the initial connectivity/SSL tests
-            const initialTestTitles = [
-                'should be reachable',
-                'should have a valid SSL certificate'
-            ];
-            if (!initialTestTitles.includes(this.currentTest.title) && page) {
-                const screenshotPath = "failed_" + this.currentTest.title.replaceAll(/[ &\/]/g, "_") + '.png';
-                await page.screenshot({ path: screenshotPath });
-
+            // Upload screenshot to Slack if available
+            if (screenshotPath) {
                 const slackToken = process.env.SLACK_TOKEN;
                 if (slackToken) {
                     try {
                         const { WebClient } = require('@slack/web-api');
-                        const fs = require('fs'); const web = new WebClient(slackToken);
+                        const fs = require('fs'); 
+                        const web = new WebClient(slackToken);
                         const channelId = process.env.SLACK_CHANNEL_ID || 'C07CM4JS48H';
 
                         const result = await web.files.uploadV2({
@@ -171,6 +203,16 @@
                     }
                 }
             }
+
+            // Send notification to Nextcloud Talk with screenshot
+            if (nc_talk_conversation && nc_talk_secret) {
+                try {
+                    const message = `🚨 Test on ${KORAP_URL} failed: **${this.currentTest.title}**`;
+                    await sendToNextcloudTalk(message, false, screenshotPath);
+                } catch (ncError) {
+                    console.error('Failed to send notification to Nextcloud Talk:', ncError.message);
+                }
+            }
         }
     })