diff --git a/backend/main.py b/backend/main.py
index 89e9a32..379c088 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -1506,7 +1506,14 @@ EXT_TO_LANG = {
     ".cs": "csharp", ".go": "go", ".rs": "rust", ".rb": "ruby",
     ".php": "php", ".sql": "sql", ".r": "r", ".swift": "swift",
     ".kt": "kotlin", ".txt": "plaintext", ".log": "plaintext",
-    ".dockerfile": "dockerfile", ".makefile": "makefile", ".cmake": "cmake",
+    ".lua": "lua", ".pl": "perl", ".pm": "perl", ".ex": "elixir", ".exs": "elixir",
+    ".dart": "dart", ".tf": "haskell", ".gradle": "groovy", ".groovy": "groovy",
+    ".graphql": "graphql", ".gql": "graphql", ".prisma": "sql", ".proto": "c",
+    ".vb": "basic", ".asm": "x86asm", ".s": "armasm",
+    ".vue": "xml", ".svelte": "xml", ".astro": "xml",
+    ".properties": "ini", ".service": "ini", ".hosts": "ini",
+    ".ksh": "bash", ".dockerfile": "dockerfile",
+    ".makefile": "makefile", ".cmake": "cmake",
 }
 
 
@@ -2500,7 +2507,17 @@ async def api_file(vault_name: str, path: str = Query(..., description="Relative
         }
     else:
         # Non-markdown: wrap in syntax-highlighted code block
-        lang = EXT_TO_LANG.get(ext, "plaintext")
+        lang = EXT_TO_LANG.get(ext, "")
+        if not lang:
+            # Fichiers sans extension usuels (Dockerfile, Makefile, etc.)
+            NAME_TO_LANG = {
+                "dockerfile": "dockerfile", "makefile": "makefile",
+                "cmakelists.txt": "cmake", "jenkinsfile": "groovy",
+                "vagrantfile": "ruby", "rakefile": "ruby", "gemfile": "ruby",
+                "procfile": "plaintext", "bashrc": "bash", "bash_profile": "bash",
+                "zshrc": "bash", "profile": "bash", "gitignore": "plaintext",
+            }
+            lang = NAME_TO_LANG.get(file_path.name.lower(), "plaintext")
         escaped = html_mod.escape(raw)
         html_content = f'<pre><code class="language-{lang}">{escaped}</code></pre>'
 
diff --git a/frontend/index.html b/frontend/index.html
index 7c5a8d7..ee0681b 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -88,6 +88,17 @@
         />
         <!-- defer: ne bloque pas le premier paint (le splash inline s'affiche immédiatement) -->
         <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js"></script>
+        <!-- Langues highlight.js hors bundle "common" (enregistrement auto apres le core) -->
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/dockerfile.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/powershell.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/dos.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/cmake.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/dart.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/elixir.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/haskell.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/nginx.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/http.min.js"></script>
+        <script defer src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/plaintext.min.js"></script>
         <script defer src="https://unpkg.com/lucide@0.344.0/dist/umd/lucide.min.js"></script>
         <script defer src="https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.min.js"></script>
         <script type="importmap">
diff --git a/frontend/js/utils.js b/frontend/js/utils.js
index 3908aad..8ed913a 100644
--- a/frontend/js/utils.js
+++ b/frontend/js/utils.js
@@ -259,6 +259,28 @@ function safeHighlight(block) {
   if (block.className && block.className.indexOf('language-mermaid') !== -1) return;
   if (typeof hljs !== "undefined" && hljs.highlightElement) {
     try {
+      // Alias pour les extensions que highlight.js (bundle common) ne connaît pas
+      const PP_LANG_ALIAS = {
+        md: "markdown", markdown: "markdown", rst: "plaintext",
+        pl: "perl", lua: "lua", dart: "dart",
+        vue: "html", svelte: "html", astro: "html",
+        graphql: "graphql", prisma: "sql", proto: "c",
+        vb: "basic", vba: "basic", asm: "x86asm",
+        tf: "haskell", gradle: "groovy", groovy: "groovy",
+        properties: "ini", gitignore: "plaintext", hosts: "ini",
+        fish: "bash", ksh: "bash", systemd: "ini", batch: "dos", bat: "dos",
+        shell: "bash", golang: "go", toml: "ini", avsc: "json", jsonc: "json", json5: "json",
+      };
+      const m = /\blanguage-([\w-]+)/.exec(block.className || "");
+      if (m) {
+        const lang = m[1];
+        const alias = PP_LANG_ALIAS[lang];
+        if (alias && hljs.getLanguage && !hljs.getLanguage(lang) && hljs.getLanguage(alias)) {
+          block.className = block.className.replace("language-" + lang, "language-" + alias);
+        } else if (hljs.getLanguage && !hljs.getLanguage(lang) && !hljs.getLanguage(alias || "")) {
+          block.className = block.className.replace("language-" + lang, "language-plaintext");
+        }
+      }
       hljs.highlightElement(block);
     } catch (e) {
       /* CDN not loaded */
diff --git a/frontend/js/viewer.js b/frontend/js/viewer.js
index 2aef5ca..ca1acfb 100644
--- a/frontend/js/viewer.js
+++ b/frontend/js/viewer.js
@@ -506,12 +506,10 @@ function fallbackTokenize(text) {
   return out;
 }
 
-// Applique la coloration: hljs si le langage est connu et que des tokens
-// sortent, sinon fallback regex générique.
+// Applique la coloration: hljs (avec aliases de languages) si des tokens
+// sortent, sinon fallback regex generique.
 function applyPrettyHighlight(codeEl, lang, text) {
-  if (typeof hljs !== "undefined" && lang !== "plaintext") {
-    try { hljs.highlightElement(codeEl); } catch (_) { /* CDN pas charge */ }
-  }
+  safeHighlight(codeEl); // gerne les alias language-xxx inconnus de hljs
   const tokens = codeEl.querySelectorAll('[class^="hljs-"]').length;
   if (!tokens && text.trim()) {
     codeEl.innerHTML = fallbackTokenize(text);
diff --git a/frontend/popout.html b/frontend/popout.html
index 93d4017..eee71da 100644
--- a/frontend/popout.html
+++ b/frontend/popout.html
@@ -43,6 +43,11 @@
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github-dark.min.css" id="hljs-theme-dark">
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github.min.css" id="hljs-theme-light" disabled>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/dockerfile.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/powershell.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/dos.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/cmake.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/plaintext.min.js"></script>
   <script src="https://unpkg.com/lucide@0.344.0/dist/umd/lucide.min.js"></script>
   <script type="importmap">
     {