diff --git a/shell/browser/api/electron_api_web_contents.cc b/shell/browser/api/electron_api_web_contents.cc
index d30fcca9f6..ec746904f6 100644
--- a/shell/browser/api/electron_api_web_contents.cc
+++ b/shell/browser/api/electron_api_web_contents.cc
@@ -460,6 +460,8 @@ constexpr char kFooterTemplate[] = "footerTemplate";
 constexpr char kPreferCSSPageSize[] = "preferCSSPageSize";
 constexpr char kGenerateTaggedPDF[] = "generateTaggedPDF";
 constexpr char kGenerateDocumentOutline[] = "generateDocumentOutline";
+constexpr char kDpiHorizontal[] = "horizontal";
+constexpr char kDpiVertical[] = "vertical";
 #endif  // BUILDFLAG(ENABLE_PRINTING)
 
 constexpr std::string_view CursorTypeToString(
@@ -3365,10 +3367,16 @@ void WebContents::Print(gin::Arguments* const args) {
 
   // Set custom dots per inch (dpi)
   if (gin_helper::Dictionary dpi; options.Get(kDpi, &dpi)) {
+    // `webContents.print()` exposes `dpi: { horizontal, vertical }` in JS.
+    // Keep backward compatibility with internal key names as a fallback.
     settings.Set(printing::kSettingDpiHorizontal,
-                 dpi.ValueOrDefault(printing::kSettingDpiHorizontal, 72));
+                 dpi.ValueOrDefault(
+                     kDpiHorizontal,
+                     dpi.ValueOrDefault(printing::kSettingDpiHorizontal, 72)));
     settings.Set(printing::kSettingDpiVertical,
-                 dpi.ValueOrDefault(printing::kSettingDpiVertical, 72));
+                 dpi.ValueOrDefault(
+                     kDpiVertical,
+                     dpi.ValueOrDefault(printing::kSettingDpiVertical, 72)));
   }
 
   print_task_runner_->PostTaskAndReplyWithResult(