diff --git a/src/display/editor/stamp.js b/src/display/editor/stamp.js
index 24b17b0072112..e41aa2ac27975 100644
--- a/src/display/editor/stamp.js
+++ b/src/display/editor/stamp.js
@@ -159,7 +159,7 @@ class StampEditor extends AnnotationEditor {
     ) {
       this._reportTelemetry({
         action: "pdfjs.image.image_added",
-        data: { alt_text_modal: false },
+        data: { alt_text_modal: false, alt_text_type: "empty" },
       });
       try {
         // The alt-text dialog isn't opened but we still want to guess the alt
diff --git a/web/new_alt_text_manager.js b/web/new_alt_text_manager.js
index a123d68c56c34..06588b3204fdc 100644
--- a/web/new_alt_text_manager.js
+++ b/web/new_alt_text_manager.js
@@ -416,7 +416,7 @@ class NewAltTextManager {
     });
     this.#currentEditor._reportTelemetry({
       action: "pdfjs.image.image_added",
-      data: { alt_text_modal: false },
+      data: { alt_text_modal: true, alt_text_type: "skipped" },
     });
     this.#finish();
   }
@@ -464,7 +464,10 @@ class NewAltTextManager {
     }
     this.#currentEditor._reportTelemetry({
       action: "pdfjs.image.image_added",
-      data: { alt_text_modal: true },
+      data: {
+        alt_text_modal: true,
+        alt_text_type: altText ? "present" : "empty",
+      },
     });
 
     this.#currentEditor._reportTelemetry({