diff --git a/package.json b/package.json
index 022431c3..b19f06b5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "impro",
-  "version": "0.20.33",
+  "version": "0.20.34",
   "type": "module",
   "scripts": {
     "start": "rm -rf \"${BUILD_DIR:-build}\" && NODE_ENV=development eleventy --serve",
diff --git a/src/js/app.js b/src/js/app.js
index 8f431630..8dfe6a6c 100644
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -63,7 +63,10 @@ import {
   getAppViewConfig,
   handleAppViewResetQueryParam,
 } from "/js/appViewConfig.js";
-import { PluginService } from "/js/plugins/pluginService.js";
+import {
+  PluginService,
+  PLUGIN_PREVIEW_QUERY_PARAM,
+} from "/js/plugins/pluginService.js";
 import { HiddenFeedItemsStore } from "/js/dataLayer/hiddenFeedItemsStore.js";
 import { Constellation } from "/js/constellation.js";
 import { MainLayout } from "/js/mainLayout.js";
@@ -452,11 +455,16 @@ export async function main() {
     if (e.altKey) {
       return;
     }
+    const parsedUrl = new URL(anchor.href, window.location.href);
+    // The plugin preview param only takes effect at bootstrap, so these links
+    // need a full page load
+    if (parsedUrl.searchParams.has(PLUGIN_PREVIEW_QUERY_PARAM)) {
+      return;
+    }
     if (anchor.href.startsWith("/")) {
       e.preventDefault();
       return router.go(anchor.href);
     }
-    const parsedUrl = new URL(anchor.href);
     // Handle direct .bsky.social links
     if (parsedUrl.hostname.endsWith(".bsky.social")) {
       const handle = parsedUrl.hostname;
diff --git a/tests/e2e/specs/concerns/inAppLinks.test.js b/tests/e2e/specs/concerns/inAppLinks.test.js
index 0e15b4f2..8cf3bb21 100644
--- a/tests/e2e/specs/concerns/inAppLinks.test.js
+++ b/tests/e2e/specs/concerns/inAppLinks.test.js
@@ -183,6 +183,34 @@ test.describe("In-app link interception", () => {
     expect(page.url()).toContain("example.com/some-page");
   });
 
+  test("should not intercept links with a plugin-preview query param", async ({
+    page,
+  }) => {
+    await page.evaluate(() => {
+      window.__spaSessionMarker = true;
+      const anchor = document.createElement("a");
+      anchor.href = "/?plugin-preview=example-plugin";
+      anchor.textContent = "Plugin preview";
+      anchor.id = "test-plugin-preview-link";
+      document.body.appendChild(anchor);
+    });
+
+    await page.locator("#test-plugin-preview-link").click();
+
+    await expect(page).toHaveURL(/\?plugin-preview=example-plugin$/);
+    await expect(page.locator("#home-view")).toBeVisible({ timeout: 10000 });
+
+    // A full document navigation resets window state; an SPA transition would
+    // have kept the marker
+    const marker = await page.evaluate(() => window.__spaSessionMarker);
+    expect(marker).toBe(undefined);
+
+    // Logged in, bootstrap shows the preview-links warning toast
+    await expect(page.locator('[data-testid="toast"]')).toBeVisible({
+      timeout: 10000,
+    });
+  });
+
   test("should not intercept modifier-key clicks on in-app links", async ({
     page,
   }) => {