diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3821bae6..3fc9ca55 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,6 +36,22 @@ jobs:
           node-version: 20
           cache: 'yarn'
 
+      # This global ffmpeg is used for screenshots (see below)
+      - uses: FedericoCarboni/setup-ffmpeg@v3
+        with:
+          ffmpeg-version: release
+          # arm not yet supported on macos
+          architecture: ${{ matrix.os == 'macos-latest' && 'x64' || '' }}
+          # Linking type of the binaries. Use "shared" to download shared binaries and 
+          # "static" for statically linked ones. Shared builds are currently only available
+          # for windows releases. Defaults to "static"
+          linking-type: static
+          # As of version 3 of this action, builds are no longer downloaded from GitHub
+          # except on Windows: https://github.com/GyanD/codexffmpeg/releases.
+          github-token: ${{ github.server_url == 'https://github.com' && github.token || '' }}
+
+      - run: ffmpeg -version
+
        # Because of timeout issue https://github.com/yarnpkg/yarn/issues/4890
       - run: yarn install --immutable --network-timeout 1000000
 
@@ -95,6 +111,17 @@ jobs:
           APPLE_API_KEY_ID: ${{ secrets.api_key_id }}
           APPLE_API_ISSUER: ${{ secrets.api_key_issuer_id }}
 
+      - run: npx tsx script/e2e.mts 'dist/mac-arm64/LosslessCut.app/Contents/MacOS/LosslessCut' screenshot-macos.jpeg
+        if: startsWith(matrix.os, 'macos')
+      - run: npx tsx script/e2e.mts 'dist/win-x64/LosslessCut.app/Contents/MacOS/LosslessCut' screenshot-windows.jpeg
+        if: startsWith(matrix.os, 'windows')
+      - run: |
+          export DISPLAY=:0
+          sudo Xvfb -ac :0 -screen 0 1280x1024x24 > /dev/null 2>&1 &
+          sleep 1
+          npx tsx script/e2e.mts 'dist/linux-x64/LosslessCut.app/Contents/MacOS/LosslessCut' screenshot-linux.jpeg
+        if: startsWith(matrix.os, 'ubuntu')
+      
       - name: (MacOS) Upload to Mac App Store
         if: startsWith(matrix.os, 'macos') && env.is_tag == 'true'
         run: |
@@ -108,6 +135,7 @@ jobs:
           path: |
             dist/LosslessCut-mac-arm64.dmg
             dist/LosslessCut-mac-x64.dmg
+            screenshot-macos.jpeg
 
       - name: (Windows) Upload artifacts
         uses: actions/upload-artifact@v3
@@ -116,6 +144,7 @@ jobs:
           name: Windows
           path: |
             dist/LosslessCut-win-x64.7z
+            screenshot-windows.jpeg
 
       - name: (Linux) Upload artifacts
         uses: actions/upload-artifact@v3
@@ -126,4 +155,5 @@ jobs:
             dist/LosslessCut-linux-arm64.tar.bz2
             dist/LosslessCut-linux-armv7l.tar.bz2
             dist/LosslessCut-linux-x64.tar.bz2
+            screenshot-linux.jpeg
 
diff --git a/package.json b/package.json
index 59560e45..5b076fa0 100644
--- a/package.json
+++ b/package.json
@@ -85,6 +85,7 @@
     "evergreen-ui": "^6.13.1",
     "fast-xml-parser": "^4.4.1",
     "framer-motion": "^9.0.3",
+    "got": "^14.4.2",
     "i18next-parser": "^9.0.1",
     "icon-gen": "^4.0.0",
     "immer": "^10.0.2",
diff --git a/script/e2e.mts b/script/e2e.mts
new file mode 100644
index 00000000..0a4a1257
--- /dev/null
+++ b/script/e2e.mts
@@ -0,0 +1,63 @@
+/* eslint-disable no-console */
+import assert from 'node:assert';
+import { execa } from 'execa';
+import got from 'got';
+import os from 'node:os';
+import timers from 'node:timers/promises';
+
+
+const losslessCutExePath = process.argv[2];
+assert(losslessCutExePath);
+const screenshotOutPath = process.argv[3];
+assert(screenshotOutPath);
+
+
+const port = 8081;
+
+const ps = execa(losslessCutExePath, ['--http-api', String(port)]);
+
+console.log('Started', losslessCutExePath);
+
+// eslint-disable-next-line unicorn/prefer-top-level-await
+ps.catch((err) => console.error(err));
+
+const client = got.extend({ prefixUrl: `http://127.0.0.1:${port}`, timeout: { request: 5000 } });
+
+async function captureScreenshot(outPath: string) {
+  // https://trac.ffmpeg.org/wiki/Capture/Desktop#Windows
+
+  await execa('ffmpeg', [
+    ...(os.platform() === 'darwin' ? ['-r', '30', '-pix_fmt', 'uyvy422', '-f', 'avfoundation', '-i', '1:none'] : []),
+    ...(os.platform() === 'win32' ? ['-f', 'gdigrab', '-framerate', '30', '-i', 'desktop'] : []),
+    ...(os.platform() === 'linux' ? ['-framerate', '25', '-f', 'x11grab', '-i', ':0.0+0,0'] : []),
+    '-vframes', '1', outPath,
+  ], { timeout: 30000 });
+}
+
+try {
+  const resp = await client('', {
+    retry: { backoffLimit: 5000, limit: 10 },
+    hooks: { beforeRequest: [() => { console.log('attempt'); }] },
+  }).text();
+  assert(resp.length > 0);
+
+  console.log('Waiting for UI to settle');
+
+  await timers.setTimeout(5000);
+
+  console.log('Capturing screenshot');
+
+  await captureScreenshot(screenshotOutPath);
+
+  console.log('Sending quit command');
+
+  await client.post('api/action/quit').text();
+} finally {
+  // ps.cancel();
+}
+
+console.log('Waiting for app to quit');
+
+await ps;
+
+console.log('App has quit');
diff --git a/src/main/index.ts b/src/main/index.ts
index d91fb374..8496bb49 100644
--- a/src/main/index.ts
+++ b/src/main/index.ts
@@ -11,6 +11,7 @@ import JSON5 from 'json5';
 import remote from '@electron/remote/main';
 import { stat } from 'node:fs/promises';
 import assert from 'node:assert';
+import timers from 'node:timers/promises';
 
 import logger from './logger.js';
 import menu from './menu.js';
@@ -404,7 +405,9 @@ export function focusWindow() {
   }
 }
 
-export function quitApp() {
+export async function quitApp() {
+  // allow HTTP API to respond etc.
+  await timers.setTimeout(1000);
   electron.app.quit();
 }
 
diff --git a/yarn.lock b/yarn.lock
index 879d8ff3..20630cfe 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1797,6 +1797,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@sindresorhus/is@npm:^7.0.0":
+  version: 7.0.0
+  resolution: "@sindresorhus/is@npm:7.0.0"
+  checksum: 10/768f9155dba0dda0277353693babcdf81bbbbec91db2a86a1533696e8cf857e6cf66e517b2ec8922cb25a906bf2e8576c3cf556cd9148ba96451751eb4047536
+  languageName: node
+  linkType: hard
+
 "@szmarczak/http-timer@npm:^4.0.5":
   version: 4.0.6
   resolution: "@szmarczak/http-timer@npm:4.0.6"
@@ -1806,6 +1813,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@szmarczak/http-timer@npm:^5.0.1":
+  version: 5.0.1
+  resolution: "@szmarczak/http-timer@npm:5.0.1"
+  dependencies:
+    defer-to-connect: "npm:^2.0.1"
+  checksum: 10/fc9cb993e808806692e4a3337c90ece0ec00c89f4b67e3652a356b89730da98bc824273a6d67ca84d5f33cd85f317dcd5ce39d8cc0a2f060145a608a7cb8ce92
+  languageName: node
+  linkType: hard
+
 "@tokenizer/token@npm:^0.3.0":
   version: 0.3.0
   resolution: "@tokenizer/token@npm:0.3.0"
@@ -2027,6 +2043,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/http-cache-semantics@npm:^4.0.4":
+  version: 4.0.4
+  resolution: "@types/http-cache-semantics@npm:4.0.4"
+  checksum: 10/a59566cff646025a5de396d6b3f44a39ab6a74f2ed8150692e0f31cc52f3661a68b04afe3166ebe0d566bd3259cb18522f46e949576d5204781cd6452b7fe0c5
+  languageName: node
+  linkType: hard
+
 "@types/http-errors@npm:*":
   version: 2.0.4
   resolution: "@types/http-errors@npm:2.0.4"
@@ -3347,6 +3370,28 @@ __metadata:
   languageName: node
   linkType: hard
 
+"cacheable-lookup@npm:^7.0.0":
+  version: 7.0.0
+  resolution: "cacheable-lookup@npm:7.0.0"
+  checksum: 10/69ea78cd9f16ad38120372e71ba98b64acecd95bbcbcdad811f857dc192bad81ace021f8def012ce19178583db8d46afd1a00b3e8c88527e978e049edbc23252
+  languageName: node
+  linkType: hard
+
+"cacheable-request@npm:^12.0.1":
+  version: 12.0.1
+  resolution: "cacheable-request@npm:12.0.1"
+  dependencies:
+    "@types/http-cache-semantics": "npm:^4.0.4"
+    get-stream: "npm:^9.0.1"
+    http-cache-semantics: "npm:^4.1.1"
+    keyv: "npm:^4.5.4"
+    mimic-response: "npm:^4.0.0"
+    normalize-url: "npm:^8.0.1"
+    responselike: "npm:^3.0.0"
+  checksum: 10/91ca6f3cdcbec3309032b96ba8e94e9d3978ab2e9ee048d75b32acf8a0f06c4cd4739317a39ce621469130f838b06713c1333d35b212e87633c4812d7f18b17f
+  languageName: node
+  linkType: hard
+
 "cacheable-request@npm:^7.0.2":
   version: 7.0.2
   resolution: "cacheable-request@npm:7.0.2"
@@ -4106,7 +4151,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"defer-to-connect@npm:^2.0.0":
+"defer-to-connect@npm:^2.0.0, defer-to-connect@npm:^2.0.1":
   version: 2.0.1
   resolution: "defer-to-connect@npm:2.0.1"
   checksum: 10/8a9b50d2f25446c0bfefb55a48e90afd58f85b21bcf78e9207cd7b804354f6409032a1705c2491686e202e64fc05f147aa5aa45f9aa82627563f045937f5791b
@@ -5709,6 +5754,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"form-data-encoder@npm:^4.0.2":
+  version: 4.0.2
+  resolution: "form-data-encoder@npm:4.0.2"
+  checksum: 10/71a00a1e954267f8b87d4301936dda7177cfe18714a92930c87ebc132acb8b19ed12e9b9f8ad47af52c1cc582fd45c1771f66f850a6d319147731160f6b9b3fa
+  languageName: node
+  linkType: hard
+
 "form-data@npm:^4.0.0":
   version: 4.0.0
   resolution: "form-data@npm:4.0.0"
@@ -6188,6 +6240,25 @@ __metadata:
   languageName: node
   linkType: hard
 
+"got@npm:^14.4.2":
+  version: 14.4.2
+  resolution: "got@npm:14.4.2"
+  dependencies:
+    "@sindresorhus/is": "npm:^7.0.0"
+    "@szmarczak/http-timer": "npm:^5.0.1"
+    cacheable-lookup: "npm:^7.0.0"
+    cacheable-request: "npm:^12.0.1"
+    decompress-response: "npm:^6.0.0"
+    form-data-encoder: "npm:^4.0.2"
+    http2-wrapper: "npm:^2.2.1"
+    lowercase-keys: "npm:^3.0.0"
+    p-cancelable: "npm:^4.0.1"
+    responselike: "npm:^3.0.0"
+    type-fest: "npm:^4.19.0"
+  checksum: 10/4f3b37594cce3d08ce26e917637eae28a96637cd1bd6569dd6fd61f1224b597dca470aa59597431d1b2b5dbb4a98fa246766dcb7085bb8cbde22f1e762036d03
+  languageName: node
+  linkType: hard
+
 "graceful-fs@npm:^4.1.6, graceful-fs@npm:^4.2.0, graceful-fs@npm:^4.2.10, graceful-fs@npm:^4.2.11, graceful-fs@npm:^4.2.6, graceful-fs@npm:^4.2.8":
   version: 4.2.11
   resolution: "graceful-fs@npm:4.2.11"
@@ -6370,7 +6441,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"http-cache-semantics@npm:^4.0.0, http-cache-semantics@npm:^4.1.0":
+"http-cache-semantics@npm:^4.0.0, http-cache-semantics@npm:^4.1.0, http-cache-semantics@npm:^4.1.1":
   version: 4.1.1
   resolution: "http-cache-semantics@npm:4.1.1"
   checksum: 10/362d5ed66b12ceb9c0a328fb31200b590ab1b02f4a254a697dc796850cc4385603e75f53ec59f768b2dad3bfa1464bd229f7de278d2899a0e3beffc634b6683f
@@ -6411,6 +6482,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"http2-wrapper@npm:^2.2.1":
+  version: 2.2.1
+  resolution: "http2-wrapper@npm:2.2.1"
+  dependencies:
+    quick-lru: "npm:^5.1.1"
+    resolve-alpn: "npm:^1.2.0"
+  checksum: 10/e7a5ac6548318e83fc0399cd832cdff6bbf902b165d211cad47a56ee732922e0aa1107246dd884b12532a1c4649d27c4d44f2480911c65202e93c90bde8fa29d
+  languageName: node
+  linkType: hard
+
 "https-proxy-agent@npm:^5.0.0, https-proxy-agent@npm:^5.0.1":
   version: 5.0.1
   resolution: "https-proxy-agent@npm:5.0.1"
@@ -7311,7 +7392,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"keyv@npm:^4.0.0, keyv@npm:^4.5.3":
+"keyv@npm:^4.0.0, keyv@npm:^4.5.3, keyv@npm:^4.5.4":
   version: 4.5.4
   resolution: "keyv@npm:4.5.4"
   dependencies:
@@ -7565,6 +7646,7 @@ __metadata:
     file-type: "patch:file-type@npm%3A19.4.1#~/.yarn/patches/file-type-npm-19.4.1-d18086444c.patch"
     framer-motion: "npm:^9.0.3"
     fs-extra: "npm:^8.1.0"
+    got: "npm:^14.4.2"
     i18next: "npm:^23.12.2"
     i18next-fs-backend: "npm:^2.3.2"
     i18next-parser: "npm:^9.0.1"
@@ -7642,6 +7724,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"lowercase-keys@npm:^3.0.0":
+  version: 3.0.0
+  resolution: "lowercase-keys@npm:3.0.0"
+  checksum: 10/67a3f81409af969bc0c4ca0e76cd7d16adb1e25aa1c197229587eaf8671275c8c067cd421795dbca4c81be0098e4c426a086a05e30de8a9c587b7a13c0c7ccc5
+  languageName: node
+  linkType: hard
+
 "lowlight@npm:^1.17.0":
   version: 1.20.0
   resolution: "lowlight@npm:1.20.0"
@@ -7866,6 +7955,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"mimic-response@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "mimic-response@npm:4.0.0"
+  checksum: 10/33b804cc961efe206efdb1fca6a22540decdcfce6c14eb5c0c50e5ae9022267ab22ce8f5568b1f7247ba67500fe20d523d81e0e9f009b321ccd9d472e78d1850
+  languageName: node
+  linkType: hard
+
 "min-indent@npm:^1.0.0":
   version: 1.0.1
   resolution: "min-indent@npm:1.0.1"
@@ -8225,6 +8321,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"normalize-url@npm:^8.0.1":
+  version: 8.0.1
+  resolution: "normalize-url@npm:8.0.1"
+  checksum: 10/ae392037584fc5935b663ae4af475351930a1fc39e107956cfac44f42d5127eec2d77d9b7b12ded4696ca78103bafac5b6206a0ea8673c7bffecbe13544fcc5a
+  languageName: node
+  linkType: hard
+
 "now-and-later@npm:^3.0.0":
   version: 3.0.0
   resolution: "now-and-later@npm:3.0.0"
@@ -8435,6 +8538,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"p-cancelable@npm:^4.0.1":
+  version: 4.0.1
+  resolution: "p-cancelable@npm:4.0.1"
+  checksum: 10/64de7b0be4c8bacc006488e0e90aa66fbcceb4da4f6fb84584573145f015f9650fe6ac26470897b3e82a3b528f6c60ea276b84cc315e35c45e9f12dec062a295
+  languageName: node
+  linkType: hard
+
 "p-limit@npm:^2.0.0, p-limit@npm:^2.2.0":
   version: 2.3.0
   resolution: "p-limit@npm:2.3.0"
@@ -9333,7 +9443,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"resolve-alpn@npm:^1.0.0":
+"resolve-alpn@npm:^1.0.0, resolve-alpn@npm:^1.2.0":
   version: 1.2.1
   resolution: "resolve-alpn@npm:1.2.1"
   checksum: 10/744e87888f0b6fa0b256ab454ca0b9c0b80808715e2ef1f3672773665c92a941f6181194e30ccae4a8cd0adbe0d955d3f133102636d2ee0cca0119fec0bc9aec
@@ -9424,6 +9534,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"responselike@npm:^3.0.0":
+  version: 3.0.0
+  resolution: "responselike@npm:3.0.0"
+  dependencies:
+    lowercase-keys: "npm:^3.0.0"
+  checksum: 10/e0cc9be30df4f415d6d83cdede3c5c887cd4a73e7cc1708bcaab1d50a28d15acb68460ac5b02bcc55a42f3d493729c8856427dcf6e57e6e128ad05cba4cfb95e
+  languageName: node
+  linkType: hard
+
 "retry@npm:^0.12.0":
   version: 0.12.0
   resolution: "retry@npm:0.12.0"
@@ -10863,6 +10982,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"type-fest@npm:^4.19.0":
+  version: 4.26.0
+  resolution: "type-fest@npm:4.26.0"
+  checksum: 10/f5fe86d2c3db693f7154c8ab0d228a89394e4c446f2ed30ea3b61afaea9757c87c4e79475ef8d6f5fafbd7a4efd302e3b0237d9657dd425228f20a27feee3aef
+  languageName: node
+  linkType: hard
+
 "type-is@npm:~1.6.18":
   version: 1.6.18
   resolution: "type-is@npm:1.6.18"