From ac33e5984947dbfb601b331a15c73242d657f4d4 Mon Sep 17 00:00:00 2001
From: Ekaterina Chubrick <ekaterina.chubrick@duallab.com>
Date: Tue, 16 Jun 2026 14:28:48 +0300
Subject: [PATCH 1/2] Fix issue with names decoding

---
 src/core/catalog.js | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/core/catalog.js b/src/core/catalog.js
index 17e1e28e10f21..dc7e812eac414 100644
--- a/src/core/catalog.js
+++ b/src/core/catalog.js
@@ -1798,6 +1798,17 @@ class ExtendedCatalog extends Catalog {
     return shadow(this, "structTreeRootObject", structTreeRoot);
   }
 
+  convertString(str, type) {
+    try {
+      return stringToUTF8String(str);
+    } catch (e) {
+      console.log(
+        `Failed to convert string "${str}" (${type}) to UTF-8, using safe conversion. Error: ${e}`
+      );
+      return stringToPDFString(str);
+    }
+  }
+
   getTreeElement(el, page, ref) {
     try {
       // update page for current element
@@ -1817,8 +1828,8 @@ class ExtendedCatalog extends Catalog {
         const roleName = this.getRoleName(el, name);
 
         const treeElement = {
-          name: name ? stringToPDFString(name) : null,
-          roleName: roleName ? stringToPDFString(roleName) : null,
+          name: name ? this.convertString(name, "Name") : null,
+          roleName: roleName ? this.convertString(roleName, "Role name") : null,
           children: this.getTreeElement(el.get("K"), page, el.getRaw("K")),
           pageIndex: page,
           ref: ref instanceof Ref ? ref : null,
@@ -1829,7 +1840,7 @@ class ExtendedCatalog extends Catalog {
           alt = el.has("ActualText") ? el.get("ActualText") : null;
         }
         if (typeof alt === "string") {
-          treeElement.alt = stringToPDFString(alt);
+          treeElement.alt = this.convertString(alt, "Alt");
         }
 
         return treeElement;
@@ -1903,8 +1914,8 @@ class ExtendedCatalog extends Catalog {
         const roleName = this.getRoleName(el, name);
 
         const treeElement = {
-          name: name ? stringToPDFString(name) : null,
-          roleName: roleName ? stringToPDFString(roleName) : null,
+          name: name ? this.convertString(name, "Name") : null,
+          roleName: roleName ? this.convertString(roleName, "Role name") : null,
           children: [],
           pageIndex: page,
           ref: ref instanceof Ref ? ref : null,
@@ -1915,7 +1926,7 @@ class ExtendedCatalog extends Catalog {
           alt = el.has("ActualText") ? el.get("ActualText") : null;
         }
         if (typeof alt === "string") {
-          treeElement.alt = stringToPDFString(alt);
+          treeElement.alt = this.convertString(alt, "Alt");
         }
 
         return treeElement;

From b4d7398075428b00d8998d42cf2c506c629fbf82 Mon Sep 17 00:00:00 2001
From: Ekaterina Chubrick <ekaterina.chubrick@duallab.com>
Date: Tue, 16 Jun 2026 16:18:19 +0300
Subject: [PATCH 2/2] Comment debug message

---
 src/core/catalog.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/catalog.js b/src/core/catalog.js
index dc7e812eac414..b32ce42d49618 100644
--- a/src/core/catalog.js
+++ b/src/core/catalog.js
@@ -1802,9 +1802,9 @@ class ExtendedCatalog extends Catalog {
     try {
       return stringToUTF8String(str);
     } catch (e) {
-      console.log(
+      /*console.log(
         `Failed to convert string "${str}" (${type}) to UTF-8, using safe conversion. Error: ${e}`
-      );
+      );*/
       return stringToPDFString(str);
     }
   }