diff --git a/test/integration/jasmine-boot.js b/test/integration/jasmine-boot.js
index 1c9d8118d21e8..4ed75f5612199 100644
--- a/test/integration/jasmine-boot.js
+++ b/test/integration/jasmine-boot.js
@@ -38,6 +38,7 @@ async function runTests(results) {
       "freetext_editor_spec.mjs",
       "highlight_editor_spec.mjs",
       "ink_editor_spec.mjs",
+      "presentation_mode_spec.mjs",
       "reorganize_pages_spec.mjs",
       "scripting_spec.mjs",
       "signature_editor_spec.mjs",
diff --git a/test/integration/presentation_mode_spec.mjs b/test/integration/presentation_mode_spec.mjs
new file mode 100644
index 0000000000000..15edbb3ecd087
--- /dev/null
+++ b/test/integration/presentation_mode_spec.mjs
@@ -0,0 +1,174 @@
+/* Copyright 2026 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {
+  awaitPromise,
+  closePages,
+  createPromise,
+  loadAndWait,
+  waitForTimeout,
+} from "./test_utils.mjs";
+
+async function enterPresentationMode(page) {
+  await page.click("#secondaryToolbarToggleButton");
+  await page.waitForSelector("#secondaryToolbar", { hidden: false });
+
+  const handlePresentationModeChanged = await createPromise(page, resolve => {
+    window.PDFViewerApplication.eventBus.on(
+      "presentationmodechanged",
+      resolve,
+      { once: true }
+    );
+  });
+  await page.click("#presentationMode");
+  await awaitPromise(handlePresentationModeChanged);
+
+  // Check that presentation mode is active and that the toolbar is
+  // invisible; the latter differentiates between proper presentation
+  // mode and pressing F11 to only hide the browser's UI elements.
+  await page.waitForFunction(`document.fullscreenElement !== null`);
+  await page.waitForSelector("#viewerContainer.pdfPresentationMode", {
+    visible: true,
+  });
+  await page.waitForSelector("#toolbarContainer", { visible: false });
+  await page.waitForFunction(
+    `window.PDFViewerApplication.pdfViewer.currentPageNumber === 1`
+  );
+  await page.waitForFunction(
+    `window.PDFViewerApplication.pdfViewer.currentScaleValue === "page-fit"`
+  );
+}
+
+async function exitPresentationMode(page, browserName) {
+  // Note that in Chrome pressing Escape does not work to exit full screen mode
+  // in the Puppeteer scope, so there we exit full screen mode programmatically
+  // instead, which is equivalent to what happens if Escape is pressed.
+  const handlePresentationModeChanged = await createPromise(page, resolve => {
+    window.PDFViewerApplication.eventBus.on(
+      "presentationmodechanged",
+      resolve,
+      { once: true }
+    );
+  });
+  await (browserName === "chrome"
+    ? page.evaluate(() => document.exitFullscreen())
+    : page.keyboard.press("Escape"));
+  await awaitPromise(handlePresentationModeChanged);
+
+  // Check that presentation mode is not active anymore and the toolbar
+  // is visible again.
+  await page.waitForFunction(`document.fullscreenElement === null`);
+  await page.waitForSelector("#viewerContainer:not(.pdfPresentationMode)", {
+    visible: true,
+  });
+  await page.waitForSelector("#toolbarContainer", { visible: true });
+  await page.waitForFunction(
+    `window.PDFViewerApplication.pdfViewer.currentPageNumber === 1`
+  );
+  await page.waitForFunction(
+    `window.PDFViewerApplication.pdfViewer.currentScaleValue !== "page-fit"`
+  );
+}
+
+describe("PDFPresentationMode", () => {
+  describe("Changing pages", () => {
+    let pages;
+
+    beforeEach(async () => {
+      pages = await loadAndWait(
+        "basicapi.pdf",
+        ".textLayer .endOfContent",
+        100
+      );
+    });
+
+    afterEach(async () => {
+      await closePages(pages);
+    });
+
+    it("must check that changing pages using arrow keys works in presentation mode", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await enterPresentationMode(page);
+
+          // Go to the next page.
+          await page.keyboard.press("ArrowDown");
+          await page.waitForFunction(
+            `window.PDFViewerApplication.pdfViewer.currentPageNumber === 2`
+          );
+
+          // Go to the previous page.
+          await page.keyboard.press("ArrowUp");
+          await page.waitForFunction(
+            `window.PDFViewerApplication.pdfViewer.currentPageNumber === 1`
+          );
+
+          await exitPresentationMode(page, browserName);
+        })
+      );
+    });
+
+    it("must check that changing pages using mouse wheel works in presentation mode", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await enterPresentationMode(page);
+
+          // Go to the next page.
+          await page.mouse.wheel({ deltaY: 100 });
+          await page.waitForFunction(
+            `window.PDFViewerApplication.pdfViewer.currentPageNumber === 2`
+          );
+
+          // Wait until the viewer accepts a new mouse scroll event; see
+          // `MOUSE_SCROLL_COOLDOWN_TIME` in `web/pdf_presentation_mode.js`.
+          // eslint-disable-next-line no-restricted-syntax
+          await waitForTimeout(50);
+
+          // Go to the previous page.
+          await page.mouse.wheel({ deltaY: -100 });
+          await page.waitForFunction(
+            `window.PDFViewerApplication.pdfViewer.currentPageNumber === 1`
+          );
+
+          await exitPresentationMode(page, browserName);
+        })
+      );
+    });
+
+    it("must check that changing pages using mouse click works in presentation mode", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await enterPresentationMode(page);
+
+          // Go to the next page.
+          await page.click(".page[data-page-number='1']");
+          await page.waitForFunction(
+            `window.PDFViewerApplication.pdfViewer.currentPageNumber === 2`
+          );
+
+          // Go to the previous page.
+          await page.keyboard.down("Shift");
+          await page.click(".page[data-page-number='2']");
+          await page.keyboard.up("Shift");
+          await page.waitForFunction(
+            `window.PDFViewerApplication.pdfViewer.currentPageNumber === 1`
+          );
+
+          await exitPresentationMode(page, browserName);
+        })
+      );
+    });
+  });
+});