diff --git a/nuxt.config.ts b/nuxt.config.ts
index 45eeb2c..a3e20aa 100644
--- a/nuxt.config.ts
+++ b/nuxt.config.ts
@@ -45,4 +45,12 @@ export default defineNuxtConfig({
     },
   },
 
+  nitro: {
+    externals: {
+      traceInclude: [
+        'node_modules/pdfjs-dist/legacy/build/pdf.worker.mjs',
+      ],
+    },
+  },
+
 })
diff --git a/server/api/admin/pdf-outline.get.ts b/server/api/admin/pdf-outline.get.ts
index 4d128f2..989a4c1 100644
--- a/server/api/admin/pdf-outline.get.ts
+++ b/server/api/admin/pdf-outline.get.ts
@@ -1,28 +1,63 @@
 import { join } from 'node:path'
 import { readFileSync, existsSync } from 'node:fs'
 
+// Polyfills nécessaires pour pdfjs-dist en Node.js pur (pas de DOM)
+// On n'a besoin que du parsing, pas du rendu
+if (typeof globalThis.DOMMatrix === 'undefined') {
+  // @ts-expect-error polyfill minimal pour pdfjs
+  globalThis.DOMMatrix = class DOMMatrix {
+    constructor() { return Object.assign(this, { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 }) }
+    isIdentity = true
+    translate() { return new DOMMatrix() }
+    scale() { return new DOMMatrix() }
+    inverse() { return new DOMMatrix() }
+    multiply() { return new DOMMatrix() }
+  }
+}
+if (typeof globalThis.Path2D === 'undefined') {
+  // @ts-expect-error polyfill stub
+  globalThis.Path2D = class Path2D { constructor() {} }
+}
+if (typeof globalThis.ImageData === 'undefined') {
+  // @ts-expect-error polyfill stub
+  globalThis.ImageData = class ImageData { constructor(w: number, h: number) { this.width = w; this.height = h; this.data = new Uint8ClampedArray(w * h * 4) } }
+}
+
 export default defineEventHandler(async () => {
   const config = await readYaml('bookplayer.config.yml')
   const pdfFile = config?.book?.pdfFile || '/pdf/une-economie-du-don.pdf'
 
-  // En dev : public/, en prod : .output/public/
+  // Résolution du chemin PDF : dev (public/) et prod (.output/public/)
   const cwd = process.cwd()
   const candidates = [
     join(cwd, 'public', pdfFile),
     join(cwd, '.output', 'public', pdfFile),
   ]
   const pdfPath = candidates.find(p => existsSync(p))
-  if (!pdfPath) return []
+
+  if (!pdfPath) {
+    console.warn('[pdf-outline] PDF non trouvé. cwd:', cwd, 'candidats:', candidates)
+    return []
+  }
 
   let data: Uint8Array
   try {
     data = new Uint8Array(readFileSync(pdfPath))
-  } catch {
+  } catch (err) {
+    console.warn('[pdf-outline] Erreur lecture PDF:', err)
     return []
   }
 
   const pdfjsLib = await import('pdfjs-dist/legacy/build/pdf.mjs')
-  const doc = await pdfjsLib.getDocument({ data, useSystemFonts: true }).promise
+
+  let doc
+  try {
+    doc = await pdfjsLib.getDocument({ data, useSystemFonts: true }).promise
+  } catch (err) {
+    console.warn('[pdf-outline] Erreur getDocument:', err)
+    return []
+  }
+
   const outline = await doc.getOutline()
 
   if (!outline || outline.length === 0) {