diff --git a/DownYouNow.ipynb b/DownYouNow.ipynb
index e3593e9..063ad38 100644
--- a/DownYouNow.ipynb
+++ b/DownYouNow.ipynb
@@ -27,8 +27,7 @@
       "cell_type": "code",
       "execution_count": null,
       "metadata": {
-        "id": "tgACi8lLVS6Y",
-        "cellView": "form"
+        "id": "tgACi8lLVS6Y"
       },
       "outputs": [],
       "source": [
@@ -131,8 +130,15 @@
         "        \n",
         "        check_installDone('write')\n",
         "\n",
-        "def save_video(): \n",
+        "def check_link(): \n",
+        "    # Check the link if it is in YouTube. \n",
+        "    if ('.youtube.co' in user.video_link) or ('youtu.be' in user.video_link): \n",
+        "        return True\n",
+        "    else: \n",
+        "        fail(formatting.font.bold + 'The link is not YouTube. ' + formatting.clear)\n",
+        "        return False\n",
         "\n",
+        "def save_video(): \n",
         "    import google;\n",
         "\n",
         "    try:\n",
@@ -171,47 +177,51 @@
         "        start_download((video.video_title + '.' + user.audio_format))\n",
         "\n",
         "# Main. \n",
-        "check_compatibility()\n",
-        "cleanup()\n",
-        "\n",
-        "class user: \n",
-        "    video_link = \"\" #@param {type:\"string\"}\n",
-        "    video_link = video_link.strip()\n",
-        "\n",
-        "    #@markdown ## Output\n",
-        "    audio_only = 0 #@param {type:\"slider\", min:0, max:1, step:1}\n",
-        "\n",
-        "    if not(audio_only): \n",
-        "        video_format = \"mkv\" #@param [\"mkv\", \"webm\"]\n",
-        "    else: \n",
-        "        video_format = False\n",
-        "    \n",
-        "    audio_format = 'm4a' #@param ['m4a']\n",
-        "\n",
-        "\n",
-        "install_required()\n",
-        "\n",
         "try: \n",
-        "    import yt_dlp;\n",
-        "    with yt_dlp.YoutubeDL({}) as ydl:\n",
-        "        class video: \n",
-        "            info_dict = ydl.extract_info(user.video_link, download=False)\n",
-        "            video_url = info_dict.get(\"url\", None)\n",
-        "            video_id = info_dict.get(\"id\", None)\n",
-        "            video_title = info_dict.get('title', None)\n",
-        "            output_format = '';\n",
-        "except: \n",
-        "    import youtube_dl;\n",
-        "    with youtube_dl.YoutubeDL({}) as ydl:\n",
-        "        class video: \n",
-        "            info_dict = ydl.extract_info(user.video_link, download=False)\n",
-        "            video_url = info_dict.get(\"url\", None)\n",
-        "            video_id = info_dict.get(\"id\", None)\n",
-        "            video_title = info_dict.get('title', None)\n",
-        "            output_format = '';\n",
+        "    check_compatibility()\n",
+        "    cleanup()\n",
+        "    check_link()\n",
         "\n",
-        "save_video()\n",
-        "download_video()"
+        "    class user: \n",
+        "        video_link = \"\" #@param {type:\"string\"}\n",
+        "        video_link = video_link.strip()\n",
+        "\n",
+        "        #@markdown ## Output\n",
+        "        audio_only = 0 #@param {type:\"slider\", min:0, max:1, step:1}\n",
+        "\n",
+        "        if not(audio_only): \n",
+        "            video_format = \"mkv\" #@param [\"mkv\", \"webm\"]\n",
+        "        else: \n",
+        "            video_format = False\n",
+        "        \n",
+        "        audio_format = 'm4a' #@param ['m4a']\n",
+        "\n",
+        "\n",
+        "    install_required()\n",
+        "\n",
+        "    try: \n",
+        "        import yt_dlp;\n",
+        "        with yt_dlp.YoutubeDL({}) as ydl:\n",
+        "            class video: \n",
+        "                info_dict = ydl.extract_info(user.video_link, download=False)\n",
+        "                video_url = info_dict.get(\"url\", None)\n",
+        "                video_id = info_dict.get(\"id\", None)\n",
+        "                video_title = info_dict.get('title', None)\n",
+        "                output_format = '';\n",
+        "    except: \n",
+        "        import youtube_dl;\n",
+        "        with youtube_dl.YoutubeDL({}) as ydl:\n",
+        "            class video: \n",
+        "                info_dict = ydl.extract_info(user.video_link, download=False)\n",
+        "                video_url = info_dict.get(\"url\", None)\n",
+        "                video_id = info_dict.get(\"id\", None)\n",
+        "                video_title = info_dict.get('title', None)\n",
+        "                output_format = '';\n",
+        "\n",
+        "    save_video()\n",
+        "    download_video()\n",
+        "except: \n",
+        "    info.fail(formatting.font.bold + 'An error has ocurred, ' formatting.clear + 'we apologize for the inconvenience. Please check the log for full details. ')"
       ]
     }
   ],