diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 0800595..d47a49a 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -1,10 +1,17 @@
 ## Summary
+
 ## Related issue
+
 Closes #
 
 ## Changes made
-- 
+
+-
+
 ## Author checklist
+
+`bun run pr` runs all the commands below in one go.
+
 - [ ] Matches the spec
 - [ ] `bun run format` - code has been formatted
 - [ ] `bun run lint` - no prettier/eslint errors
@@ -14,4 +21,5 @@ Closes #
 - [ ] I tested the relevant changes manually
 
 ## Reviewer manual testing checklist
-- [ ] 
\ No newline at end of file
+
+- [ ]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..c6d69a1
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+concurrency:
+  group: ci-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  checks:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v5
+
+      - name: Set up Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      # Needed by the vitest browser-mode project (chromium via playwright)
+      - name: Install Playwright browsers
+        run: bunx playwright install chromium --with-deps
+
+      # `bun run format` is local-only; CI verifies formatting via prettier --check in `lint`
+      - name: Lint (prettier + eslint)
+        run: bun run lint
+
+      - name: Check (svelte-check + TypeScript)
+        run: bun run check
+
+      - name: Test
+        run: bun run test
+
+      - name: Build
+        run: bun run build
diff --git a/README.md b/README.md
index dedd261..df2b941 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,14 @@ bun run test    # unit tests
 bun run build   # production build
 ```
 
+Or run them all in one go:
+
+```sh
+bun run pr
+```
+
+CI runs the same checks (all except `format`) on every pull request.
+
 ## License
 
-This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version.
\ No newline at end of file
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version.
diff --git a/package.json b/package.json
index ff6ab5a..40d85c2 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,8 @@
     "lint": "prettier --check . && eslint .",
     "format": "prettier --write .",
     "test:unit": "vitest",
-    "test": "npm run test:unit -- --run"
+    "test": "npm run test:unit -- --run",
+    "pr": "bun run format && bun run lint && bun run check && bun run test && bun run build"
   },
   "devDependencies": {
     "@eslint/js": "^10.0.1",