diff --git a/pt/web/firebird/tests/App.spec.js b/pt/web/firebird/tests/App.spec.js
index 793cb3a57..f0178c9c6 100644
--- a/pt/web/firebird/tests/App.spec.js
+++ b/pt/web/firebird/tests/App.spec.js
@@ -10,8 +10,7 @@ test.describe('pt loads', () => {
   });
 
   test('sidebar is visible', async ({ page }) => {
-    const sidebar = page.getByRole('complementary');
-    await expect(sidebar).toBeVisible;
+    await expect(page.locator('aside')).toBeVisible();
   });
 
   test('has main element', async ({ page }) => {
diff --git a/pt/web/firebird/tests/ViewerToolbar.spec.js b/pt/web/firebird/tests/ViewerToolbar.spec.js
index c83ab8f6f..028a240d0 100644
--- a/pt/web/firebird/tests/ViewerToolbar.spec.js
+++ b/pt/web/firebird/tests/ViewerToolbar.spec.js
@@ -77,4 +77,36 @@ test.describe('reader toolbar actions', () => {
     await expect(page.getByRole('button', { name: 'Zoom In', exact: true })).toBeVisible();
     await expect(page.getByLabel('Page scan 1').locator('details')).toBeVisible();
   });
+
+  test.describe('zoom limits', () => {
+    test('zoom-in button is disabled at maximum zoom', async ({ page }) => {
+      const zoomIn = page.getByLabel('Zoom').getByRole('button', { name: 'Zoom In' });
+      for (let i = 0; i < 20; i++) {
+        if (await zoomIn.isDisabled()) break;
+        await zoomIn.click();
+      }
+      await expect(zoomIn).toBeDisabled();
+    });
+
+    test('zoom-out button is disabled at minimum zoom', async ({ page }) => {
+      const zoomOut = page.getByLabel('Zoom').getByRole('button', { name: 'Zoom Out' });
+      for (let i = 0; i < 20; i++) {
+        if (await zoomOut.isDisabled()) break;
+        await zoomOut.click();
+      }
+      await expect(zoomOut).toBeDisabled();
+    });
+
+    test('zoom-out re-enables after zooming back in from minimum', async ({ page }) => {
+      const zoomIn = page.getByLabel('Zoom').getByRole('button', { name: 'Zoom In' });
+      const zoomOut = page.getByLabel('Zoom').getByRole('button', { name: 'Zoom Out' });
+      for (let i = 0; i < 20; i++) {
+        if (await zoomOut.isDisabled()) break;
+        await zoomOut.click();
+      }
+      await expect(zoomOut).toBeDisabled();
+      await zoomIn.click();
+      await expect(zoomOut).toBeEnabled();
+    });
+  });
 });
diff --git a/pt/web/firebird/tests/sidebar.spec.js b/pt/web/firebird/tests/sidebar.spec.js
index 5e27a86de..9525d7a8d 100644
--- a/pt/web/firebird/tests/sidebar.spec.js
+++ b/pt/web/firebird/tests/sidebar.spec.js
@@ -259,6 +259,35 @@ test.describe('sidebar actions', () => {
       await page.getByRole('button', { name: 'Save Changes' }).click();
     });
   });
+  test.describe('share panel', () => {
+    test.beforeEach(async ({ page }) => {
+      const shareButton = page.getByRole('button', { name: 'Share' });
+      await shareButton.click();
+      await expect(shareButton).toHaveAttribute('aria-expanded', 'true');
+    });
+
+    test('shows permanent link to item', async ({ page }) => {
+      await expect(page.getByLabel('Permanent link to this item')).toHaveValue(/hdl\.handle\.net\/2027\/test\.pd_open/);
+    });
+
+    test('shows link to current page scan', async ({ page }) => {
+      // getByRole needed because the nearby copy button's aria-label contains the same substring
+      await expect(page.getByRole('textbox', { name: 'Link to this page scan' })).toHaveValue(/hdl\.handle\.net\/2027\/test\.pd_open.*seq=1/);
+    });
+
+    test('page scan link updates when navigating to a different page', async ({ page }) => {
+      await page.getByRole('button', { name: 'Next Page' }).click();
+      await expect(page.getByRole('textbox', { name: 'Link to this page scan' })).toHaveValue(/seq=2/);
+    });
+
+    test('embed button opens modal with iframe code', async ({ page }) => {
+      await page.getByRole('button', { name: 'Embed this item' }).click();
+      await expect(page.getByRole('dialog')).toBeVisible();
+      await expect(page.getByLabel('Code Block')).toHaveValue(/iframe/);
+      await expect(page.getByLabel('Code Block')).toHaveValue(/test\.pd_open/);
+    });
+  });
+
   // close and expand sidebar
   test.describe('toggle sidebar visibility', () => {
     test('close sidebar', async ({ page }) => {