diff --git a/src/postprocesser.js b/src/postprocesser.js
index 87746a74a1a6d026452a87dd8519e278367c7b8e..eb57b75e000bbdd44db428f1482a527f8fd2251d 100644
--- a/src/postprocesser.js
+++ b/src/postprocesser.js
@@ -40,6 +40,21 @@ class PostProcesser extends EventEmitter {
       meta.producer = info.producer;
     }
 
+    // Display the title of the document in the title bar by default
+    // See PDF/UA 1: 7.1-9
+    // See Matterhorn Protocol 1.1: Indices 07-001 & 07-002
+    if (meta.title) {
+      this.pdfDoc.catalog.set("ViewerPreferences", 
+        new PDFLib.PDFDictionary({ DisplayDocTitle: PDFLib.PDFBoolean.fromBool(true) }, PDFLib.PDFObjectIndex.create()));
+    }
+
+    // Set the default language of the document
+    // See PDF/UA 1: 7.2-3
+    // See Matterhorn Protocol 1.1: Index 11-006
+    if (meta.lang) {
+      this.pdfDoc.catalog.set("Lang", PDFLib.PDFString.fromString(meta.lang)); 
+    }
+
     // Add meta
     this.addXmpMetadata(meta);
     this.updateInfoDict(meta);
diff --git a/src/printer.js b/src/printer.js
index e3e690d4ac5ad35238c8c3f30b10c0f3e22d9ccf..8c320e3e42859e1e93d8e897eadf2f7985fb9804 100644
--- a/src/printer.js
+++ b/src/printer.js
@@ -36,7 +36,7 @@ class Printer extends EventEmitter {
   async setup() {
     let puppeteerOptions = {
       headless: this.headless,
-      args: ["--disable-dev-shm-usage"],
+      args: ["--disable-dev-shm-usage", "--export-tagged-pdf"],
       ignoreHTTPSErrors: this.ignoreHTTPSErrors
     };
 
@@ -303,6 +303,10 @@ class Printer extends EventEmitter {
       if (title) {
         meta.title = title.textContent.trim();
       }
+      let lang = document.querySelector("html").getAttribute("lang");
+      if (lang) {
+        meta.lang = lang;
+      }
       let metaTags = document.querySelectorAll("meta");
       [...metaTags].forEach((tag) => {
         if (tag.name) {