diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ff6195483..2fcf872b7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,6 +33,20 @@ jobs:
     - name: Verify production build
       run: npm run build -- --configuration production --aot=false
 
+    - name: Install Chromium
+      run: ./node_modules/.bin/playwright install --with-deps chromium --only-shell
+
+    - name: Run E2E tests
+      run: npm run test:e2e
+
+    - name: Upload E2E test results
+      if: failure()
+      uses: actions/upload-artifact@v4
+      with:
+        name: e2e-test-results
+        path: nav-app/tmp/playwright/test-results/
+        retention-days: 7
+
     - name: Archive code coverage results
       uses: actions/upload-artifact@v4
       if: always()
diff --git a/nav-app/e2e/Dockerfile b/nav-app/e2e/Dockerfile
new file mode 100644
index 000000000..a3867e3a0
--- /dev/null
+++ b/nav-app/e2e/Dockerfile
@@ -0,0 +1,21 @@
+FROM node:22.22.2-bookworm
+
+WORKDIR /app/nav-app
+ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
+COPY nav-app/package.json nav-app/package-lock.json ./
+RUN npm ci --ignore-scripts
+RUN --mount=type=secret,id=extra_ca \
+    if [ -f /run/secrets/extra_ca ]; then export NODE_EXTRA_CA_CERTS=/run/secrets/extra_ca; fi; \
+    ./node_modules/.bin/playwright install --with-deps chromium --only-shell
+
+COPY nav-app/angular.json nav-app/tsconfig*.json nav-app/playwright.config.ts ./
+COPY nav-app/src ./src
+COPY nav-app/e2e ./e2e
+COPY layers /app/layers
+COPY *.md /app/
+RUN npm run build -- --configuration production --aot=false
+
+RUN mkdir -p tmp && chown node:node tmp
+USER node
+
+CMD ["npm", "run", "test:e2e"]
diff --git a/nav-app/e2e/Dockerfile.dockerignore b/nav-app/e2e/Dockerfile.dockerignore
new file mode 100644
index 000000000..0b4c662e3
--- /dev/null
+++ b/nav-app/e2e/Dockerfile.dockerignore
@@ -0,0 +1,14 @@
+**
+!*.md
+!layers/
+!layers/**
+!nav-app/
+!nav-app/package.json
+!nav-app/package-lock.json
+!nav-app/angular.json
+!nav-app/tsconfig*.json
+!nav-app/src/
+!nav-app/src/**
+!nav-app/playwright.config.ts
+!nav-app/e2e/
+!nav-app/e2e/**
diff --git a/nav-app/e2e/README.md b/nav-app/e2e/README.md
new file mode 100644
index 000000000..f9387cae1
--- /dev/null
+++ b/nav-app/e2e/README.md
@@ -0,0 +1,62 @@
+# End-to-end tests
+
+Playwright runs the E2E suite in Chromium.
+
+Run from `nav-app` with Node 22, npm, and Python 3 available:
+
+```sh
+npm ci --ignore-scripts
+npx playwright install chromium --only-shell
+npm run build -- --configuration production --aot=false
+npm run test:e2e
+```
+
+Playwright starts and stops a local static server on port 4173. The suite uses the
+production build in `dist/browser`; rebuild after application changes.
+
+Downloaded JSON and failure traces are saved under `tmp/playwright/test-results`.
+There are no retries. The CI quality gate runs the suite after the production
+build on PRs targeting `develop` or `master`, and on pushes to `develop`. Failed runs upload
+`tmp/playwright/test-results` as an artifact retained for seven days.
+
+## Adding tests
+
+Tag smoke tests with `{ tag: '@smoke' }`; run only those with `npm run test:e2e -- --grep @smoke`.
+
+Add Playwright tests as `*.spec.ts` files in this directory.
+Protractor `*.e2e-spec.ts` files are excluded from Playwright runs.
+
+For tests that do not check font rendering, stub remote font stylesheet requests
+with an empty CSS response so external font-service availability cannot affect
+the result. See `layer.spec.ts` for an example.
+
+## Docker
+
+Run from the repository root:
+
+```sh
+docker build -f nav-app/e2e/Dockerfile -t attack-navigator-e2e:local .
+docker run --rm --init attack-navigator-e2e:local
+```
+
+The image installs dependencies and Chromium, builds Navigator, and runs the same
+suite. Source files are copied into the image; no host directories
+are mounted. The local build and `node_modules` are not used. Test artifacts are
+inside the container and are discarded by `--rm`.
+
+Optional troubleshooting flags:
+
+- Add `--platform linux/amd64` to both commands to match the GitHub runner's CPU
+  architecture when investigating differences between local and CI runs.
+- Add `--shm-size=1g` to `docker run` to increase shared memory if Chromium crashes
+  because the container's default shared memory is insufficient.
+
+If browser downloads fail with `SELF_SIGNED_CERT_IN_CHAIN`, set `CA_BUNDLE` to a
+trusted PEM certificate bundle and supply it when building:
+
+```sh
+docker build --secret "id=extra_ca,src=$CA_BUNDLE" -f nav-app/e2e/Dockerfile -t attack-navigator-e2e:local .
+```
+
+The optional build secret sets `NODE_EXTRA_CA_CERTS` only for browser installation.
+The bundle is not stored in the image, and TLS verification is enabled.
diff --git a/nav-app/e2e/layer.spec.ts b/nav-app/e2e/layer.spec.ts
new file mode 100644
index 000000000..434250b17
--- /dev/null
+++ b/nav-app/e2e/layer.spec.ts
@@ -0,0 +1,54 @@
+import { test, expect } from '@playwright/test';
+import { readFile } from 'node:fs/promises';
+import config from '../src/assets/config.json';
+import { configData, matrixSDO, TA0000, T0001, T0003 } from '../src/tests/utils/mock-data';
+
+test('create, score, rename, and export an Enterprise layer', { tag: '@smoke' }, async ({ page }, testInfo) => {
+    const errors: string[] = [];
+    page.on('pageerror', error => errors.push(error.message));
+
+    // Reuse existing synthetic STIX fixtures; only data responses are replaced.
+    await page.route('**/assets/config.json', route => route.fulfill({
+        json: { ...config, collection_index_url: '', versions: configData },
+    }));
+    await page.route(configData.entries[0].domains[0].data[0], route => route.fulfill({
+        json: {
+            type: 'bundle',
+            id: 'bundle-smoke',
+            objects: [matrixSDO, TA0000, { ...T0001, name: 'Smoke technique' }, { ...T0003, name: 'Untouched technique' }],
+        },
+    }));
+    // Avoid an external font dependency; assertions use text and attributes, not icon appearance.
+    await page.route('https://fonts.googleapis.com/**', route => route.fulfill({ body: '', contentType: 'text/css' }));
+
+    await page.goto('/');
+    await page.getByText('Create New Layer', { exact: true }).click();
+    await page.getByRole('button', { name: 'Enterprise', exact: true }).click();
+    await expect(page.locator('technique-cell')).toHaveCount(2);
+    await page.locator('technique-cell').getByText('Smoke technique', { exact: true }).click();
+
+    await page.getByText('Technique Controls', { exact: true }).click();
+    await page.locator('span[alt="score"]').click();
+    await page.getByLabel('score', { exact: true }).fill('1');
+
+    await page.getByText('Layer Controls', { exact: true }).click();
+    await page.locator('span[alt="layer information"]').click();
+    await page.getByLabel('Name', { exact: true }).fill('Smoke layer');
+    await expect(page.locator('.tab-title.active')).toContainText('Smoke layer');
+
+    await page.locator('span[alt="export"]').click();
+    const downloadPromise = page.waitForEvent('download');
+    await page.locator('span[alt="save layer"]').filter({ hasText: /^code$/ }).click();
+    const download = await downloadPromise;
+    const file = testInfo.outputPath('layer.json');
+    await download.saveAs(file);
+    const layer = JSON.parse(await readFile(file, 'utf8'));
+    expect(layer).toMatchObject({
+        name: 'Smoke layer',
+        domain: 'enterprise-attack',
+        versions: { attack: '13', layer: '4.5', navigator: expect.any(String) },
+    });
+    expect(layer.techniques).toHaveLength(1);
+    expect(layer.techniques[0]).toMatchObject({ techniqueID: 'T0001', tactic: 'tactic-name', score: 1 });
+    expect(errors).toEqual([]);
+});
diff --git a/nav-app/package-lock.json b/nav-app/package-lock.json
index fac5ab5db..49a092322 100644
--- a/nav-app/package-lock.json
+++ b/nav-app/package-lock.json
@@ -47,6 +47,7 @@
         "@angular/cli": "^19.2.23",
         "@angular/compiler-cli": "^19.2.20",
         "@angular/language-service": "^19.2.20",
+        "@playwright/test": "1.63.0",
         "@types/jasmine": "^6.0.0",
         "@types/jasminewd2": "^2.0.8",
         "@types/node": "^22.19.17",
@@ -5227,6 +5228,22 @@
         "node": ">=14"
       }
     },
+    "node_modules/@playwright/test": {
+      "version": "1.63.0",
+      "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.63.0.tgz",
+      "integrity": "sha512-oxMK4vllB9RK5NQ2l1pq1IfOf2AvnEuj/vYGDj0H2nMtmtZpKtCwt/l00GEO6xjGfpBNAvjovvYdCm50dRQkpQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright": "1.63.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
     "node_modules/@rollup/rollup-android-arm-eabi": {
       "version": "4.59.0",
       "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.59.0.tgz",
@@ -14457,6 +14474,35 @@
         "pathe": "^2.0.1"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.63.0",
+      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.63.0.tgz",
+      "integrity": "sha512-+7ziBLidS4NaNCdt57SUDT+wYmmd5fmiQejUic/kb+YsYSCPyOOE9sebzMjNmQrsnNpDJqd4WHvV/8lfKfUDUg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.63.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.63.0",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.63.0.tgz",
+      "integrity": "sha512-rYCsBF/M5HjUch52bbtVONEFjv6Xu8sm8h72dNlR5bzIE1fvC/bxgspzkjSfU+MweEMmPM8KJebG6nnyxo5mCg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
     "node_modules/points-on-curve": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/points-on-curve/-/points-on-curve-0.2.0.tgz",
diff --git a/nav-app/package.json b/nav-app/package.json
index 597472897..df1714841 100644
--- a/nav-app/package.json
+++ b/nav-app/package.json
@@ -12,6 +12,7 @@
     "start": "ng serve --host 0.0.0.0",
     "build": "ng build",
     "test": "ng test",
+    "test:e2e": "playwright test",
     "lint": "ng lint",
     "prettier": "npx prettier src --check",
     "prettier:fix": "npm run prettier -- --write"
@@ -55,6 +56,7 @@
     "@angular/cli": "^19.2.23",
     "@angular/compiler-cli": "^19.2.20",
     "@angular/language-service": "^19.2.20",
+    "@playwright/test": "1.63.0",
     "@types/jasmine": "^6.0.0",
     "@types/jasminewd2": "^2.0.8",
     "@types/node": "^22.19.17",
diff --git a/nav-app/playwright.config.ts b/nav-app/playwright.config.ts
new file mode 100644
index 000000000..2b8a58409
--- /dev/null
+++ b/nav-app/playwright.config.ts
@@ -0,0 +1,18 @@
+import { defineConfig } from '@playwright/test';
+
+export default defineConfig({
+    testDir: './e2e',
+    testMatch: '**/*.spec.ts',
+    outputDir: './tmp/playwright/test-results',
+    workers: 1,
+    retries: 0,
+    use: {
+        browserName: 'chromium',
+        baseURL: 'http://127.0.0.1:4173',
+        trace: 'retain-on-failure',
+    },
+    webServer: {
+        command: 'python3 -m http.server 4173 --bind 127.0.0.1 --directory dist/browser',
+        url: 'http://127.0.0.1:4173',
+    },
+});