diff --git a/config.js b/config.js
index a88931e..f795b4d 100644
--- a/config.js
+++ b/config.js
@@ -4,6 +4,6 @@ module.exports = {
     version: packageJson.version,
     applicationPort: "8787",
     debugMode: true,
-    localMode: true,
+    localMode: false,
     DiscordRPCID: "1410934537051181146",
 }
\ No newline at end of file
diff --git a/public/index.html b/public/index.html
index 248ba02..e9535ae 100644
--- a/public/index.html
+++ b/public/index.html
@@ -46,9 +46,11 @@
                 <option value="480">480p</option>
             </select>
 
-            <button type="submit">Télécharger</button>
+            <button type="submit" onclick="startProgress()">Télécharger</button>
         </form>
 
+
+
         <!--Il faut utiliser un formulaire, parce que on doit envoyer a un serveur 
         les données à traiter. Pour cela on définit une route vers /download, ca va
         être l'espèce de "canal" attribué a ça. Ca va faire que si jamais on veut ensuite recup
@@ -62,6 +64,13 @@
             <button id="changePath">Modifier</button>
     </div>
 
+
+    <div id="downloadProgressWrapper">
+        <div id="downloadProgress"></div>
+        <div id="downloadProgressText">0%</div>
+    </div>
+
+
     <div id="downloadStatus"></div>
 
     <div class="infos-container">
@@ -81,7 +90,7 @@
     <script src="script/custompath.js"></script>
     <script src="script/downloadstatus.js"></script>
     <script src="script/fetchinfo.js"></script>
-    <script src="script/chirac.js"></script>
+    <script src="script/progressBar.js"></script>
     <script src="script/customthemes.js"></script>
 
 </body>
diff --git a/public/script/custompath.js b/public/script/custompath.js
index 54eaaea..4bb81ad 100644
--- a/public/script/custompath.js
+++ b/public/script/custompath.js
@@ -1,45 +1,15 @@
-/*
-  This file is part of Freedom Loader.
-
-  Copyright (C) 2025 MasterAcnolo
-
-  Freedom Loader is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation, either version 3 of the License.
-
-  Freedom Loader is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-/*
-  Ce script attend que le DOM soit complètement chargé pour initialiser
-  l'affichage et la gestion du chemin de sauvegarde personnalisé.
-
-  1. Récupère le chemin de téléchargement par défaut depuis le main process via l'API exposée.
-  2. Met à jour le texte affiché dans l'élément avec l'id "savePath".
-  3. Crée un input caché nommé "savePath" dans le formulaire pour envoyer ce chemin lors du submit.
-  4. Ajoute un écouteur sur le bouton "changePath" pour permettre à l'utilisateur
-     de choisir un dossier via une boîte de dialogue native.
-  5. Met à jour l'affichage et la valeur cachée du chemin sélectionné.
-*/
-
 window.addEventListener("DOMContentLoaded", async () => {
   const savePathElem = document.getElementById("savePath");
 
-  // 1️Essayer de charger depuis le localStorage
+  // Essayer de charger depuis le localStorage
   let savedPath = localStorage.getItem("customDownloadPath");
 
-  // 2️Sinon demander le chemin par défaut à l'API Electron
+  // Sinon demander le chemin par défaut à l'API Electron
   if (!savedPath) {
     savedPath = await window.electronAPI.getDefaultDownloadPath();
   }
 
-  // 3 Afficher le chemin
+  // Afficher le chemin
   if (savePathElem) {
     savePathElem.textContent = savedPath;
   }
diff --git a/public/script/customthemes.js b/public/script/customthemes.js
index e2228a9..56e056a 100644
--- a/public/script/customthemes.js
+++ b/public/script/customthemes.js
@@ -1,20 +1,3 @@
-/*
-  This file is part of Freedom Loader.
-
-  Copyright (C) 2025 MasterAcnolo
-
-  Freedom Loader is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation, either version 3 of the License.
-
-  Freedom Loader is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
 
 // Définition des thèmes disponibles
 // Chaque thème a un label (affiché dans le select) et un subtitle (texte sous le titre)
diff --git a/public/script/downloadstatus.js b/public/script/downloadstatus.js
index 315cbc2..09e6558 100644
--- a/public/script/downloadstatus.js
+++ b/public/script/downloadstatus.js
@@ -1,21 +1,3 @@
-/*
-  This file is part of Freedom Loader.
-
-  Copyright (C) 2025 MasterAcnolo
-
-  Freedom Loader is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation, either version 3 of the License.
-
-  Freedom Loader is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
 const form = document.getElementById("downloadForm");
 const statusDiv = document.getElementById("downloadStatus");
 const button = form.querySelector("button");
diff --git a/public/script/fetchinfo.js b/public/script/fetchinfo.js
index d9e76c5..508d39c 100644
--- a/public/script/fetchinfo.js
+++ b/public/script/fetchinfo.js
@@ -1,21 +1,3 @@
-/*
-  This file is part of Freedom Loader.
-
-  Copyright (C) 2025 MasterAcnolo
-
-  Freedom Loader is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation, either version 3 of the License.
-
-  Freedom Loader is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
 function formatDate(dateStr) {
   if (!dateStr || dateStr.length !== 8) return "Inconnue";
   return `${dateStr.slice(6,8)}/${dateStr.slice(4,6)}/${dateStr.slice(0,4)}`;
@@ -33,7 +15,7 @@ async function fetchVideoInfo(url) {
       body: new URLSearchParams({ url }),
     });
 
-    if (!res.ok) return { error: `Erreur serveur: ${res.status}` };
+    if (!res.ok) return { error: `Erreur Lors de la récupération des informations` };
 
     const data = await res.json();
     if (!data) return { error: "Données manquantes" };
@@ -52,9 +34,10 @@ document.addEventListener("DOMContentLoaded", () => {
   urlInput.addEventListener("input", async () => {
     const url = urlInput.value.trim();
 
-    if (!url || url.length < 5) {
+    // Si champ vide -> reset total
+    if (!url || url.length < 2) {
       infoDiv.innerHTML = "";
-      infoDiv.classList.remove("visible");
+      infoDiv.classList.remove("visible", "playlist-mode");
       lastFetchedUrl = "";
       return;
     }
@@ -63,25 +46,41 @@ document.addEventListener("DOMContentLoaded", () => {
     lastFetchedUrl = url;
 
     const data = await fetchVideoInfo(url);
+
+    // Gestion des erreurs
     if (data.error) {
-      infoDiv.innerHTML = `❌ ${data.error}`;
-      infoDiv.classList.remove("visible");
+      infoDiv.innerHTML = `
+        <div style="
+          padding:12px;
+          background:#380a0a;
+          border:1px solid #a93333;
+          border-radius:6px;
+          margin-top:10px;
+        ">
+          <strong>Erreur :</strong> ${data.error}
+        </div>
+      `;
+      infoDiv.classList.add("visible");
+      infoDiv.classList.remove("playlist-mode");
       return;
     }
 
+    // ---------- PLAYLIST ----------
     if (data.type === "playlist") {
-
       infoDiv.classList.add("playlist-mode");
       infoDiv.innerHTML = `
-      
         <h3 style="color:var(--video-info-heading-color);"><strong>Playlist détectée: ${data.title}</strong></h3>
         <h3 style="color:var(--video-info-heading-color);"><strong>Nombre de vidéos: ${data.count}</strong></h3>
         <p><strong>Channel :</strong> ${data.channel || "Unknown"}</p>
         <div id="playlistVideos"></div>
       `;
+
       const listDiv = document.getElementById("playlistVideos");
-     data.videos.forEach(v => {
-        const durationStr = `${Math.floor(v.duration/60)}m ${(v.duration%60).toString().padStart(2,"0")}s`;
+
+      data.videos.forEach(v => {
+        const durationStr = v.duration
+          ? `${Math.floor(v.duration / 60)}m ${(v.duration % 60).toString().padStart(2,"0")}s` : "Inconnue";
+
         const videoUrl = v.id ? `https://www.youtube.com/watch?v=${v.id}` : v.url;
 
         listDiv.innerHTML += `
@@ -89,28 +88,25 @@ document.addEventListener("DOMContentLoaded", () => {
             <img src="${v.thumbnail}" width="160" alt="Thumbnail">
             <p><strong>${v.title}</strong></p>
             <p>Durée : ${durationStr}</p>
-            <p><a href="${videoUrl}" target="_blank">URL</a> 
-              <button class="copy-btn" data-url="${videoUrl}">
-                📋
-              </button>
+            <p><a href="${videoUrl}" target="_blank">URL</a>
+              <button class="copy-btn" data-url="${videoUrl}">📋</button>
             </p>
           </div>
         `;
       });
 
-      listDiv.addEventListener("click", (e) => {
-        if (e.target.classList.contains("copy-btn")) {
-          const btn = e.target;
+      // Gestion du bouton copier
+      listDiv.addEventListener("click", (event) => {
+        if (event.target.classList.contains("copy-btn")) {
+          const btn = event.target;
           if (btn.disabled) return;
 
           btn.disabled = true;
           const url = btn.dataset.url;
-
           navigator.clipboard.writeText(url)
             .then(() => {
               const original = btn.textContent;
 
-              // fade out + shrink
               btn.style.opacity = 0;
               btn.style.transform = "scale(0.7)";
 
@@ -127,13 +123,12 @@ document.addEventListener("DOMContentLoaded", () => {
                     btn.textContent = original;
                     btn.style.opacity = 1;
                     btn.style.transform = "scale(1)";
-                    btn.disabled = false; // réactive le bouton
+                    btn.disabled = false;
                   }, 300);
 
                 }, 1000);
 
               }, 300);
-
             })
             .catch(() => {
               const original = btn.textContent;
@@ -146,19 +141,17 @@ document.addEventListener("DOMContentLoaded", () => {
         }
       });
 
-
-
       infoDiv.classList.add("visible");
-    return;
-  } else {
-  infoDiv.classList.remove("playlist-mode");
-}
+      return;
+    }
 
+    infoDiv.classList.remove("playlist-mode");
+
+    // ---------- VIDEO NORMALE ----------
+    const durationStr = data.duration
+      ? `${Math.floor(data.duration/60)}m ${(data.duration%60).toString().padStart(2,"0")}s`
+      : "Inconnue";
 
-    // Vidéo normale
-    const durationStr = `${Math.floor(data.duration/60)}m ${(data.duration%60)
-      .toString()
-      .padStart(2,"0")}s`;
     const sizeStr = formatSize(data.filesize_approx);
     const readableDate = formatDate(data.upload_date);
     const categories = data.categories?.join(", ") || "Non spécifiées";
@@ -178,6 +171,8 @@ document.addEventListener("DOMContentLoaded", () => {
         <li><strong>Catégories :</strong> ${categories}</li>
       </ul>
     `;
+
     infoDiv.classList.add("visible");
   });
+
 })
\ No newline at end of file
diff --git a/public/script/progressBar.js b/public/script/progressBar.js
new file mode 100644
index 0000000..4439f38
--- /dev/null
+++ b/public/script/progressBar.js
@@ -0,0 +1,29 @@
+const progressWrapper = document.getElementById("downloadProgressWrapper");
+const progressBar = document.getElementById("downloadProgress");
+
+function startProgress() {
+  progressWrapper.style.display = "block";
+  progressBar.style.width = "0%";
+}
+
+function updateProgress(percent) {
+  progressBar.style.width = `${percent}%`;
+}
+
+// Réinitialise et cache
+function resetProgress() {
+  progressBar.style.width = "0%";
+  progressWrapper.style.display = "none";
+}
+
+// Connexion SSE, c'est Server-sent events est une technologie grâce à laquelle un navigateur reçoit des mises à jour automatiques à partir d'un serveur via une connexion HTTP. 
+const evtSource = new EventSource("/download/progress");
+evtSource.onmessage = e => {
+  const percent = parseFloat(e.data);
+  if (!isNaN(percent)) {
+    updateProgress(percent);
+    if (percent >= 100) {
+      setTimeout(resetProgress, 500);
+    }
+  }
+};
diff --git a/public/styles/components/progressBar.css b/public/styles/components/progressBar.css
new file mode 100644
index 0000000..ea14cba
--- /dev/null
+++ b/public/styles/components/progressBar.css
@@ -0,0 +1,42 @@
+/* Wrapper de la barre de téléchargement */
+#downloadProgressWrapper {
+  width: 100%;
+  max-width: 400px;
+  height: 12px;
+  background-color: #444;
+  border-radius: 6px;
+  overflow: hidden;
+  margin: 10px auto;
+  display: none;
+  box-shadow: inset 0 1px 3px rgba(0,0,0,0.5);
+}
+
+/* Barre de progression */
+#downloadProgress {
+  height: 100%;
+  width: 0%;
+  background-color: var(--video-info-link-color, #4caf50);
+  border-radius: 6px 0 0 6px;
+  transition: width 0.2s ease;
+}
+
+#downloadProgressText {
+  text-align: center;
+  font-size: 0.8rem;
+  color: #fff;
+  position: absolute;
+  width: 100%;
+  top: -20px;
+}
+
+/* Responsive pour mobile */
+@media (max-width: 480px) {
+  #downloadProgressWrapper {
+    max-width: 90%;
+    height: 10px;
+  }
+
+  #downloadProgressText {
+    font-size: 0.7rem;
+  }
+}
diff --git a/public/styles/styles.css b/public/styles/styles.css
index d385576..e053e8f 100644
--- a/public/styles/styles.css
+++ b/public/styles/styles.css
@@ -10,6 +10,7 @@
 
 @import url("theme/themeimport.css");
 @import url("components/editpathbutton.css");
+@import url("components/progressBar.css");
 
 @import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');
 
diff --git a/server/helpers/ytDlp.js b/server/helpers/ytDlp.js
new file mode 100644
index 0000000..e69de29
diff --git a/server/routes/download.js b/server/routes/download.js
index 004f140..2abae6c 100644
--- a/server/routes/download.js
+++ b/server/routes/download.js
@@ -12,6 +12,8 @@ const { notifyDownloadFinished } = require("../helpers/notify");
 
 const { userYtDlp } = require("../helpers/path");
 
+const listeners = [];
+
 router.post("/", (req, res) => {
   try {
     const options = {
@@ -31,6 +33,7 @@ router.post("/", (req, res) => {
     logger.info(args)
     const child = execFile(userYtDlp, args);
 
+
     child.on("error", err => {
       logger.error(`Erreur yt-dlp : ${err.message}`);
       res.status(500).send(`❌ Erreur yt-dlp : ${err.message}`);
@@ -48,10 +51,44 @@ router.post("/", (req, res) => {
       child.stderr.on("data", data => data.toString().split("\n").forEach(line => line.trim() && logger.error(`[yt-dlp stderr] ${line}`)));
     }
 
+    child.stdout.on("data", data => {
+      const lines = data.toString().split("\n");
+      lines.forEach(line => {
+        const match = line.match(/\[download\]\s+(\d+\.\d+)%/);
+        if (match) {
+          const percent = parseFloat(match[1]);
+          if (listeners.length > 0) {
+            listeners.forEach(fn => fn(percent));
+          }
+        }
+      });
+    });
+
   } catch (err) {
     logger.error(`Erreur serveur dans /download : ${err.message}`);
     res.status(500).send(`Erreur serveur : ${err.message}`);
   }
 });
 
-module.exports = router;
+// SSE endpoint
+router.get("/progress", (req, res) => {
+  res.set({
+    'Content-Type': 'text/event-stream',
+    'Cache-Control': 'no-cache',
+    'Connection': 'keep-alive',
+  });
+
+  const sendProgress = (percent) => {
+    res.write(`data: ${percent}\n\n`);
+  };
+
+  listeners.push(sendProgress);
+
+  req.on('close', () => {
+    listeners.splice(listeners.indexOf(sendProgress), 1);
+    res.end();
+  });
+});
+
+
+module.exports = router;
\ No newline at end of file
diff --git a/server/routes/info.js b/server/routes/info.js
index 504ff77..19c6fc5 100644
--- a/server/routes/info.js
+++ b/server/routes/info.js
@@ -3,11 +3,7 @@ const router = express.Router();
 const { execFile } = require("child_process");
 const { logger } = require("../logger");
 const { userYtDlp } = require("../helpers/path");
-const getUserBrowser = require("../helpers/getBrowser")
-
-
-// const ytDlpPath = path.join(__dirname, '../../ressources/yt-dlp.exe');
-// const userYtDlp = path.join(process.env.APPDATA || process.env.USERPROFILE, 'FreedomLoader', 'yt-dlp.exe');
+const getUserBrowser = require("../helpers/getBrowser");
 
 function isValidUrl(url) {
   try {
@@ -24,7 +20,16 @@ router.post("/", (req, res) => {
 
   logger.info(`Requête /info reçue pour ${url}`);
 
-  const args = ["--dump-single-json", "--ignore-errors", "--yes-playlist", url, "--cookies-from-browser" , `${getUserBrowser()}`];
+  const args = [
+    "--dump-single-json",
+    "--ignore-errors",
+    "--yes-playlist",
+    url,
+    "--cookies-from-browser",
+    `${getUserBrowser()}`,
+    "--extractor-args",
+    "youtube:player_client=default"
+  ];
 
   execFile(userYtDlp, args, { timeout: 30_000, maxBuffer: 10 * 1024 * 1024 }, (error, stdout, stderr) => {
 
@@ -69,13 +74,21 @@ router.post("/", (req, res) => {
       }
 
       // Vidéo unique
+      if (!data.title) {
+        return res.status(500).send("❌ Impossible de récupérer les infos pour cette vidéo.");
+
+      }
+
       logger.info(`Vidéo unique récupérée : ${data.title}`);
       res.json({ type: "video", ...data });
 
     } catch (e) {
+      // fallback aussi si JSON est illisible
       logger.error(`Erreur parsing JSON: ${e.message}`);
-      return res.status(500).send("❌ JSON illisible.");
+      return res.status(500).send("❌ Impossible de récupérer les infos (JSON illisible).");
+
     }
+
   });
 });