diff --git a/toolkit/components/pdfjs/content/GeckoViewPdfjsParent.sys.mjs b/toolkit/components/pdfjs/content/GeckoViewPdfjsParent.sys.mjs
index 5da86b2f2cb5..e5faace5af99 100644
--- a/toolkit/components/pdfjs/content/GeckoViewPdfjsParent.sys.mjs
+++ b/toolkit/components/pdfjs/content/GeckoViewPdfjsParent.sys.mjs
@@ -17,6 +17,7 @@ import { GeckoViewActorParent } from "resource://gre/modules/GeckoViewActorParen
 
 const lazy = {};
 ChromeUtils.defineESModuleGetters(lazy, {
+  PdfJsTelemetry: "resource://pdf.js/PdfJsTelemetry.sys.mjs",
   PrivateBrowsingUtils: "resource://gre/modules/PrivateBrowsingUtils.sys.mjs",
 });
 
@@ -186,6 +187,8 @@ class FileSaver {
       return;
     }
 
+    lazy.PdfJsTelemetry.onGeckoview("save_as_pdf_tapped");
+
     this.#callback = aCallback;
     this.#browser.sendMessageToActor(
       "PDFJS:Child:handleEvent",
@@ -230,8 +233,10 @@ class FileSaver {
           requestExternalApp: !!openInExternalApp,
         });
       }
+      lazy.PdfJsTelemetry.onGeckoview("download_succeeded");
       debug`Save a PDF: ${bytes.length} bytes sent.`;
     } catch (e) {
+      lazy.PdfJsTelemetry.onGeckoview("download_failed");
       if (this.#callback) {
         this.#callback?.onError(`Cannot save the pdf: ${e}.`);
       } else {
diff --git a/toolkit/components/pdfjs/content/PdfJsTelemetry.sys.mjs b/toolkit/components/pdfjs/content/PdfJsTelemetry.sys.mjs
index 72ef01b79eec..209c62212041 100644
--- a/toolkit/components/pdfjs/content/PdfJsTelemetry.sys.mjs
+++ b/toolkit/components/pdfjs/content/PdfJsTelemetry.sys.mjs
@@ -14,7 +14,7 @@
  */
 /* eslint max-len: ["error", 100] */
 
-export var PdfJsTelemetry = {
+export const PdfJsTelemetry = {
   onViewerIsUsed() {
     Glean.pdfjs.used.add(1);
   },
@@ -29,4 +29,7 @@ export var PdfJsTelemetry = {
   onButtons(id) {
     Glean.pdfjs.buttons[id].add(1);
   },
+  onGeckoview(id) {
+    Glean.pdfjs.geckoview[id].add(1);
+  },
 };
diff --git a/toolkit/components/pdfjs/content/PdfStreamConverter.sys.mjs b/toolkit/components/pdfjs/content/PdfStreamConverter.sys.mjs
index 5b80e2d30a0a..7f9eea1b45ed 100644
--- a/toolkit/components/pdfjs/content/PdfStreamConverter.sys.mjs
+++ b/toolkit/components/pdfjs/content/PdfStreamConverter.sys.mjs
@@ -397,8 +397,9 @@ class ChromeActions {
   }
 
   reportTelemetry(data) {
-    var probeInfo = JSON.parse(data);
-    switch (probeInfo.type) {
+    const probeInfo = JSON.parse(data);
+    const { type } = probeInfo;
+    switch (type) {
       case "pageInfo":
         lazy.PdfJsTelemetry.onTimeToView(probeInfo.timestamp);
         break;
@@ -406,11 +407,16 @@ class ChromeActions {
         lazy.PdfJsTelemetry.onEditing(probeInfo.data.type);
         break;
       case "buttons":
+      case "gv-buttons":
         const id = probeInfo.data.id.replace(
           /([A-Z])/g,
           c => `_${c.toLowerCase()}`
         );
-        lazy.PdfJsTelemetry.onButtons(id);
+        if (type === "buttons") {
+          lazy.PdfJsTelemetry.onButtons(id);
+        } else {
+          lazy.PdfJsTelemetry.onGeckoview(id);
+        }
         break;
     }
   }
diff --git a/toolkit/components/pdfjs/metrics.yaml b/toolkit/components/pdfjs/metrics.yaml
index 41c3d9aadf6e..369d6850537a 100644
--- a/toolkit/components/pdfjs/metrics.yaml
+++ b/toolkit/components/pdfjs/metrics.yaml
@@ -63,6 +63,28 @@ pdfjs:
       - cdenizet@mozilla.com
       - mcastelluccio@mozilla.com
     expires: never
+  geckoview:
+    type: labeled_counter
+    labels:
+      - download_tapped
+      - open_in_app_tapped
+      - open_in_app_just_once
+      - open_in_app_always
+      - download_failed
+      - download_succeeded
+      - save_as_pdf_tapped
+    description: >
+      Counts the number of times some actions are executed in the PDF viewer.
+    bugs:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1829216
+    data_reviews:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1829216#2
+    data_sensitivity:
+      - interaction
+    notification_emails:
+      - cdenizet@mozilla.com
+      - mcastelluccio@mozilla.com
+    expires: never
   used:
     bugs:
       - https://bugzilla.mozilla.org/show_bug.cgi?id=1566882