diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 0000000..f4af0ca
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1 @@
+ko_fi: gigliof
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..5e37e67
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,33 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  frontend:
+    name: Frontend — type-check & test
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Type-check
+        run: pnpm --filter frontend exec tsc --noEmit
+
+      - name: Test
+        run: pnpm test --reporter=verbose
diff --git a/README.md b/README.md
index 469d361..35854d1 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ A browser-based piano practice tool. Drop in a **MIDI file**, a **MusicXML score
 
 | Sheet music | All views | Settings |
 |---|---|---|
-| ![Sheet music](docs/screenshot-sheet.png) | ![All views](docs/screenshot-all.png) | ![Settings](docs/screenshot-settings.png) |
+| [![Sheet music](docs/screenshot-sheet.png)](docs/screenshot-sheet.png) | [![All views](docs/screenshot-all.png)](docs/screenshot-all.png) | [![Settings](docs/screenshot-settings.png)](docs/screenshot-settings.png) |
 
 ## Features
 
diff --git a/docs/screenshot-notes-cascade.png b/docs/screenshot-notes-cascade.png
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diff --git a/docs/screenshot-welcome.png b/docs/screenshot-welcome.png
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