refactor: migrate from i18next to paraglide

2025-09-27 00:04:24 +02:00 · 2025-09-27 00:04:24 +02:00 · 29d96f8451
commit 29d96f8451
parent f6f096d933
30 changed files with 470 additions and 214 deletions
--- a/.gitignore
+++ b/.gitignore
@ -11,3 +11,6 @@ node_modules
 !.env.example
 vite.config.js.timestamp-*
 vite.config.ts.timestamp-*
+
+# Paraglide
+src/lib/paraglide
--- a/messages/en.json
+++ b/messages/en.json
@ -0,0 +1,87 @@
+{
+	"$schema": "https://inlang.com/schema/inlang-message-format",
+	"search": "Search",
+	"tests_audio_description": "Check your stereo channels or surround audio output, verify if your speakers are in phase.",
+	"tests_audio_label": "Audio",
+	"tests_av-sync_description": "Check if your audio and video are in sync, and measure the delay.",
+	"tests_av-sync_label": "Audio/Video Sync",
+	"tests_card_description": "Test card for your display or projector, check colors, resolution and geometry.",
+	"tests_card_label": "Card",
+	"tests_camera_description": "Check whether your webcam or capture device is working, its image quality, resolution and frame rate. Take a snapshot.",
+	"tests_camera_label": "Camera",
+	"tests_gamepad_description": "Test your gamepad, check if it's working, all the buttons and joysticks, stick drift, dead zones and calibration.",
+	"tests_gamepad_label": "Gamepad",
+	"tests_keyboard_description": "Check if all keys are working and what key codes they send.",
+	"tests_keyboard_label": "Keyboard",
+	"tests_microphone_description": "Check if your microphone is working, its quality, volume and noise.",
+	"tests_microphone_label": "Microphone",
+	"tests_mouse_description": "Check if your mouse or touch device works properly, if there are dead zones or jitter.",
+	"tests_mouse_label": "Mouse",
+	"tests_sensors_description": "See the output of your device's sensors, e.g. GPS, accelerometer, gyroscope, compass, etc.",
+	"tests_sensors_label": "Sensors",
+	"tests_internet_description": "Measure your internet speed and latency.",
+	"tests_internet_label": "Internet speed",
+	"tests_timer_description": "Check if your high resolution timer is working.",
+	"tests_timer_label": "High resolution timer",
+	"category_inputs": "Inputs",
+	"category_outputs": "Outputs",
+	"category_audio": "Audio",
+	"category_video": "Video",
+	"category_control": "Control",
+	"category_misc": "Miscellaneous",
+	"noTestsFound": "No tests found.",
+	"camera_title": "Camera test",
+	"camera_device": "Device",
+	"camera_noCameraFound": "No camera found",
+	"camera_refresh": "Refresh",
+	"camera_resolution": "Resolution",
+	"camera_frameRate": "Frame rate",
+	"camera_noCameraSelected": "No camera selected",
+	"camera_takePicture": "Take picture",
+	"camera_unflipImage": "Unflip image",
+	"camera_flipImage": "Flip image",
+	"camera_closeSnapshot": "Close snapshot",
+	"audio_channel_frontLeft": "Front Left",
+	"audio_channel_frontCenter": "Front Center",
+	"audio_channel_frontRight": "Front Right",
+	"audio_channel_sideLeft": "Side Left",
+	"audio_channel_sideRight": "Side Right",
+	"audio_channel_rearLeft": "Rear Left",
+	"audio_channel_rearRight": "Rear Right",
+	"audio_channel_lfe": "LFE",
+	"gamepad_title": "Gamepad & Joystick Tests",
+	"gamepad_device": "Device",
+	"gamepad_noGamepadsDetected": "No gamepads detected. (Try pressing a button)",
+	"gamepad_refresh": "Refresh",
+	"gamepad_buttons": "Buttons",
+	"gamepad_axes": "Axes",
+	"gamepad_history": "History",
+	"audio_channelTests": "Channel tests",
+	"audio_stereo": "Stereo",
+	"audio_surroundAudio": "Surround audio",
+	"audio_surround51": "5.1 Surround",
+	"audio_surround71": "7.1 Surround",
+	"audio_phaseTest": "Phase test",
+	"audio_frequency": "Frequency",
+	"audio_inPhase": "In Phase",
+	"audio_outOfPhase": "Out of Phase",
+	"audio_stop": "Stop",
+	"screenInfo_screenResolution": "Screen Resolution",
+	"screenInfo_windowResolution": "Window Resolution",
+	"screenInfo_devicePixelRatio": "Device Pixel Ratio",
+	"audio_channel_left": "Left",
+	"audio_channel_center": "Center",
+	"audio_channel_right": "Right",
+	"keyboard_title": "Keyboard testing",
+	"keyboard_instruction": "Press a key on the keyboard to see the event object and the key code.",
+	"keyboard_pressedKeys": "Pressed keys:",
+	"timer_title": "High resolution timer",
+	"timer_fps": "FPS",
+	"timer_restart": "Restart",
+	"audio_stopCycling": "Stop Cycling",
+	"audio_cycleThrough": "Cycle through",
+	"common_back": "Back",
+	"audio_title": "Audio test",
+	"avSync_title": "Audio/Video Synchronization",
+	"internet_title": "Internet speed"
+}
--- a/package.json
+++ b/package.json
@ -16,6 +16,9 @@
 		"av:render:audio": "cd av-sync && node render-audio.js"
 	},
 	"devDependencies": {
+		"@inlang/paraglide-js": "^2.0.0",
+		"@inlang/plugin-m-function-matcher": "^2.1.0",
+		"@inlang/plugin-message-format": "^4.0.0",
 		"@tsconfig/svelte": "^5.0.4",
 		"@types/debug": "^4.1.12",
 		"@types/eslint": "8.56.0",
@ -44,11 +47,9 @@
 		"@sveltejs/vite-plugin-svelte": "^4.0.0",
 		"@tabler/icons-webfont": "^2.47.0",
 		"debug": "^4.4.0",
-		"i18next": "^23.16.8",
 		"lodash": "^4.17.21",
 		"normalize.css": "^8.0.1",
 		"svelte": "^5.0.0",
-		"svelte-i18next": "^2.2.2",
 		"tslib": "^2.8.1",
 		"typescript": "^5.7.3",
 		"vite": "^5.4.14"
@ -57,5 +58,10 @@
 		"esbuild",
 		"puppeteer",
 		"svelte-preprocess"
+	],
+	"pnpm": {
+		"onlyBuiltDependencies": [
+			"esbuild"
 		]
 	}
+}
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@ -32,9 +32,6 @@ importers:
      debug:
        specifier: ^4.4.0
        version: 4.4.3
-      i18next:
-        specifier: ^23.16.8
-        version: 23.16.8
      lodash:
        specifier: ^4.17.21
        version: 4.17.21
@ -44,9 +41,6 @@ importers:
      svelte:
        specifier: ^5.0.0
        version: 5.39.6
-      svelte-i18next:
-        specifier: ^2.2.2
-        version: 2.2.2(i18next@23.16.8)(svelte@5.39.6)
      tslib:
        specifier: ^2.8.1
        version: 2.8.1
@ -57,6 +51,15 @@ importers:
        specifier: ^5.4.14
        version: 5.4.20(@types/node@24.5.2)
    devDependencies:
+      '@inlang/paraglide-js':
+        specifier: ^2.0.0
+        version: 2.4.0
+      '@inlang/plugin-m-function-matcher':
+        specifier: ^2.1.0
+        version: 2.1.0
+      '@inlang/plugin-message-format':
+        specifier: ^4.0.0
+        version: 4.0.0
      '@tsconfig/svelte':
        specifier: ^5.0.4
        version: 5.0.5
@ -104,7 +107,7 @@ importers:
        version: 22.15.0(typescript@5.9.2)
      svelte-check:
        specifier: ^4.0.0
-        version: 4.3.2(svelte@5.39.6)(typescript@5.9.2)
+        version: 4.3.2(picomatch@4.0.3)(svelte@5.39.6)(typescript@5.9.2)
      wait-on:
        specifier: ^7.2.0
        version: 7.2.0(debug@4.4.3)
@ -304,6 +307,23 @@ packages:
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    deprecated: Use @eslint/object-schema instead

+  '@inlang/paraglide-js@2.4.0':
+    resolution: {integrity: sha512-T/m9uoev574/1JrhCnPcgK1xnAwkVMgaDev4LFthnmID8ubX2xjboSGO3IztwXWwO0aJoT1UJr89JCwjbwgnJQ==}
+    hasBin: true
+
+  '@inlang/plugin-m-function-matcher@2.1.0':
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+
+  '@inlang/plugin-message-format@4.0.0':
+    resolution: {integrity: sha512-zNpLxLTt+bDd3JLXj1ONzo+Q6AOzz2MfcgGo8XB6/bweGhFIndK3GU/q0iU4o7VI4KS1+OHNLpKwFcrAifwERQ==}
+
+  '@inlang/recommend-sherlock@0.2.1':
+    resolution: {integrity: sha512-ckv8HvHy/iTqaVAEKrr+gnl+p3XFNwe5D2+6w6wJk2ORV2XkcRkKOJ/XsTUJbPSiyi4PI+p+T3bqbmNx/rDUlg==}
+
+  '@inlang/sdk@2.4.9':
+    resolution: {integrity: sha512-cvz/C1rF5WBxzHbEoiBoI6Sz6q6M+TdxfWkEGBYTD77opY8i8WN01prUWXEM87GPF4SZcyIySez9U0Ccm12oFQ==}
+    engines: {node: '>=18.0.0'}
+
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@ -320,6 +340,13 @@ packages:
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+  '@lix-js/sdk@0.4.7':
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+
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+
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+
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+
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@ -777,10 +822,17 @@ packages:
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    hasBin: true

+  consola@3.4.0:
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+
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+
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@ -816,6 +868,14 @@ packages:
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        optional: true

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+    peerDependencies:
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+    peerDependenciesMeta:
+      babel-plugin-macros:
+        optional: true
+
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+
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+
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@ -1209,6 +1287,10 @@ packages:
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+    engines: {node: '>=14.0.0'}
+
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+    engines: {node: '>=12'}
+
  postcss-load-config@3.1.4:
    resolution: {integrity: sha512-6DiM4E7v4coTE4uzA8U//WhtPwyhiim3eyjEMFCnUpzbrkK9wJHgKDT2mR+HbtSrd/NubVaYTOpSpjUl8NQeRg==}
    engines: {node: '>= 10'}
@ -1442,6 +1528,10 @@ packages:
    resolution: {integrity: sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==}
    engines: {node: '>= 14.18.0'}

+  repeat-string@1.6.1:
+    resolution: {integrity: sha512-PV0dzCYDNfRi1jCDbJzpW7jNNDRuCOG/jI5ctQcGKt/clZD+YcPS3yIlWuTJMmESC8aevCFmWJy5wjAFgNqN6w==}
+    engines: {node: '>=0.10'}
+
  require-directory@2.1.1:
    resolution: {integrity: sha512-fGxEI7+wsG9xrvdjsrlmL22OMTTiHRwAMroiEeMgq8gzoLC/PQr7RsRDSTLUg/bZAZtF+TVIkHc6/4RIKrui+Q==}
    engines: {node: '>=0.10.0'}
@ -1525,6 +1615,11 @@ packages:
  spawn-command@0.0.2:
    resolution: {integrity: sha512-zC8zGoGkmc8J9ndvml8Xksr1Amk9qBujgbF0JAIWO7kXr43w0h/0GJNM/Vustixu+YE8N/MTrQ7N31FvHUACxQ==}

+  sqlite-wasm-kysely@0.3.0:
+    resolution: {integrity: sha512-TzjBNv7KwRw6E3pdKdlRyZiTmUIE0UttT/Sl56MVwVARl/u5gp978KepazCJZewFUnlWHz9i3NQd4kOtP/Afdg==}
+    peerDependencies:
+      kysely: '*'
+
  streamx@2.23.0:
    resolution: {integrity: sha512-kn+e44esVfn2Fa/O0CPFcex27fjIL6MkVae0Mm6q+E6f0hWv578YCERbv+4m02cjxvDsPKLnmxral/rR6lBMAg==}

@ -1565,12 +1660,6 @@ packages:
      svelte:
        optional: true

-  svelte-i18next@2.2.2:
-    resolution: {integrity: sha512-IpJDZCH5cCgKfHQHgiLmGT4j9HCdg4fqsP3oP2deLu8PxmNj0Ui6khMiDoxAxedAiYEhr0xendv2xqh3Rq+uQQ==}
-    peerDependencies:
-      i18next: '*'
-      svelte: '*'
-
  svelte@5.39.6:
    resolution: {integrity: sha512-bOJXmuwLNaoqPCTWO8mPu/fwxI5peGE5Efe7oo6Cakpz/G60vsnVF6mxbGODaxMUFUKEnjm6XOwHEqOht6cbvw==}
    engines: {node: '>=18'}
@ -1630,6 +1719,10 @@ packages:
  undici-types@7.12.0:
    resolution: {integrity: sha512-goOacqME2GYyOZZfb5Lgtu+1IDmAlAEu5xnD3+xTzS10hT0vzpf0SPjkXwAw9Jm+4n/mQGDP3LO8CPbYROeBfQ==}

+  unplugin@2.3.10:
+    resolution: {integrity: sha512-6NCPkv1ClwH+/BGE9QeoTIl09nuiAt0gS28nn1PvYXsGKRwM2TCbFA2QiilmehPDTXIe684k4rZI1yl3A1PCUw==}
+    engines: {node: '>=18.12.0'}
+
  uri-js@4.4.1:
    resolution: {integrity: sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==}

@ -1639,6 +1732,10 @@ packages:
  util-deprecate@1.0.2:
    resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}

+  uuid@10.0.0:
+    resolution: {integrity: sha512-8XkAphELsDnEGrDxUOHB3RGvXz6TeuYSGEZBOjtTtPm2lwhGBjLgOzLHB63IUWfBpNucQjND6d3AOudO+H3RWQ==}
+    hasBin: true
+
  vite@5.4.20:
    resolution: {integrity: sha512-j3lYzGC3P+B5Yfy/pfKNgVEg4+UtcIJcVRt2cDjIOmhLourAqPqf8P7acgxeiSgUB7E3p2P8/3gNIgDLpwzs4g==}
    engines: {node: ^18.0.0 || >=20.0.0}
@ -1683,6 +1780,9 @@ packages:
    engines: {node: '>=12.0.0'}
    hasBin: true

+  webpack-virtual-modules@0.6.2:
+    resolution: {integrity: sha512-66/V2i5hQanC51vBQKPH4aI8NMAcBW59FVBs+rC7eGHupMyfn34q7rZIE+ETlJ+XTevqfUhVVBgSUNSW2flEUQ==}
+
  which@2.0.2:
    resolution: {integrity: sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==}
    engines: {node: '>= 8'}
@ -1866,6 +1966,42 @@ snapshots:

  '@humanwhocodes/object-schema@2.0.3': {}

+  '@inlang/paraglide-js@2.4.0':
+    dependencies:
+      '@inlang/recommend-sherlock': 0.2.1
+      '@inlang/sdk': 2.4.9
+      commander: 11.1.0
+      consola: 3.4.0
+      json5: 2.2.3
+      unplugin: 2.3.10
+      urlpattern-polyfill: 10.0.0
+    transitivePeerDependencies:
+      - babel-plugin-macros
+
+  '@inlang/plugin-m-function-matcher@2.1.0':
+    dependencies:
+      '@inlang/sdk': 2.4.9
+    transitivePeerDependencies:
+      - babel-plugin-macros
+
+  '@inlang/plugin-message-format@4.0.0':
+    dependencies:
+      flat: 6.0.1
+
+  '@inlang/recommend-sherlock@0.2.1':
+    dependencies:
+      comment-json: 4.2.5
+
+  '@inlang/sdk@2.4.9':
+    dependencies:
+      '@lix-js/sdk': 0.4.7
+      '@sinclair/typebox': 0.31.28
+      kysely: 0.27.6
+      sqlite-wasm-kysely: 0.3.0(kysely@0.27.6)
+      uuid: 10.0.0
+    transitivePeerDependencies:
+      - babel-plugin-macros
+
  '@jridgewell/gen-mapping@0.3.13':
    dependencies:
      '@jridgewell/sourcemap-codec': 1.5.5
@ -1885,6 +2021,20 @@ snapshots:
      '@jridgewell/resolve-uri': 3.1.2
      '@jridgewell/sourcemap-codec': 1.5.5

+  '@lix-js/sdk@0.4.7':
+    dependencies:
+      '@lix-js/server-protocol-schema': 0.1.1
+      dedent: 1.5.1
+      human-id: 4.1.1
+      js-sha256: 0.11.1
+      kysely: 0.27.6
+      sqlite-wasm-kysely: 0.3.0(kysely@0.27.6)
+      uuid: 10.0.0
+    transitivePeerDependencies:
+      - babel-plugin-macros
+
+  '@lix-js/server-protocol-schema@0.1.1': {}
+
  '@nodelib/fs.scandir@2.1.5':
    dependencies:
      '@nodelib/fs.stat': 2.0.5
@ -1988,6 +2138,10 @@ snapshots:

  '@sideway/pinpoint@2.0.0': {}

+  '@sinclair/typebox@0.31.28': {}
+
+  '@sqlite.org/sqlite-wasm@3.48.0-build4': {}
+
  '@standard-schema/spec@1.0.0': {}

  '@sveltejs/acorn-typescript@1.0.5(acorn@8.15.0)':
@ -2198,6 +2352,8 @@ snapshots:

  aria-query@5.3.2: {}

+  array-timsort@1.0.3: {}
+
  array-union@2.1.0: {}

  ast-types@0.13.4:
@ -2320,8 +2476,18 @@ snapshots:
    dependencies:
      delayed-stream: 1.0.0

+  commander@11.1.0: {}
+
  commander@12.1.0: {}

+  comment-json@4.2.5:
+    dependencies:
+      array-timsort: 1.0.3
+      core-util-is: 1.0.3
+      esprima: 4.0.1
+      has-own-prop: 2.0.0
+      repeat-string: 1.6.1
+
  concat-map@0.0.1: {}

  concurrently@8.2.2:
@ -2336,8 +2502,12 @@ snapshots:
      tree-kill: 1.2.2
      yargs: 17.7.2

+  consola@3.4.0: {}
+
  cookie@0.6.0: {}

+  core-util-is@1.0.3: {}
+
  cosmiconfig@9.0.0(typescript@5.9.2):
    dependencies:
      env-paths: 2.2.1
@ -2365,6 +2535,8 @@ snapshots:
    dependencies:
      ms: 2.1.3

+  dedent@1.5.1: {}
+
  deep-is@0.1.4: {}

  deepmerge@4.3.1: {}
@ -2602,7 +2774,9 @@ snapshots:
    dependencies:
      pend: 1.2.0

-  fdir@6.5.0: {}
+  fdir@6.5.0(picomatch@4.0.3):
+    optionalDependencies:
+      picomatch: 4.0.3

  file-entry-cache@6.0.1:
    dependencies:
@ -2623,6 +2797,8 @@ snapshots:
      keyv: 4.5.4
      rimraf: 3.0.2

+  flat@6.0.1: {}
+
  flatted@3.3.3: {}

  follow-redirects@1.15.11(debug@4.4.3):
@ -2712,6 +2888,8 @@ snapshots:

  has-flag@4.0.0: {}

+  has-own-prop@2.0.0: {}
+
  has-symbols@1.1.0: {}

  has-tostringtag@1.0.2:
@ -2736,9 +2914,7 @@ snapshots:
    transitivePeerDependencies:
      - supports-color

-  i18next@23.16.8:
-    dependencies:
-      '@babel/runtime': 7.28.4
+  human-id@4.1.1: {}

  ieee754@1.2.1: {}

@ -2790,6 +2966,8 @@ snapshots:
      '@sideway/formula': 3.0.1
      '@sideway/pinpoint': 2.0.0

+  js-sha256@0.11.1: {}
+
  js-tokens@4.0.0: {}

  js-yaml@4.1.0:
@ -2804,6 +2982,8 @@ snapshots:

  json-stable-stringify-without-jsonify@1.0.1: {}

+  json5@2.2.3: {}
+
  keyv@4.5.4:
    dependencies:
      json-buffer: 3.0.1
@ -2812,6 +2992,8 @@ snapshots:

  known-css-properties@0.35.0: {}

+  kysely@0.27.6: {}
+
  levn@0.4.1:
    dependencies:
      prelude-ls: 1.2.1
@ -2944,6 +3126,8 @@ snapshots:

  picomatch@2.3.1: {}

+  picomatch@4.0.3: {}
+
  postcss-load-config@3.1.4(postcss@8.5.6):
    dependencies:
      lilconfig: 2.1.0
@ -3035,6 +3219,8 @@ snapshots:

  readdirp@4.1.2: {}

+  repeat-string@1.6.1: {}
+
  require-directory@2.1.1: {}

  resolve-from@4.0.0: {}
@ -3127,6 +3313,11 @@ snapshots:

  spawn-command@0.0.2: {}

+  sqlite-wasm-kysely@0.3.0(kysely@0.27.6):
+    dependencies:
+      '@sqlite.org/sqlite-wasm': 3.48.0-build4
+      kysely: 0.27.6
+
  streamx@2.23.0:
    dependencies:
      events-universal: 1.0.1
@ -3155,11 +3346,11 @@ snapshots:
    dependencies:
      has-flag: 4.0.0

-  svelte-check@4.3.2(svelte@5.39.6)(typescript@5.9.2):
+  svelte-check@4.3.2(picomatch@4.0.3)(svelte@5.39.6)(typescript@5.9.2):
    dependencies:
      '@jridgewell/trace-mapping': 0.3.31
      chokidar: 4.0.3
-      fdir: 6.5.0
+      fdir: 6.5.0(picomatch@4.0.3)
      picocolors: 1.1.1
      sade: 1.8.1
      svelte: 5.39.6
@ -3177,11 +3368,6 @@ snapshots:
    optionalDependencies:
      svelte: 5.39.6

-  svelte-i18next@2.2.2(i18next@23.16.8)(svelte@5.39.6):
-    dependencies:
-      i18next: 23.16.8
-      svelte: 5.39.6
-
  svelte@5.39.6:
    dependencies:
      '@jridgewell/remapping': 2.3.5
@ -3258,6 +3444,13 @@ snapshots:
  undici-types@7.12.0:
    optional: true

+  unplugin@2.3.10:
+    dependencies:
+      '@jridgewell/remapping': 2.3.5
+      acorn: 8.15.0
+      picomatch: 4.0.3
+      webpack-virtual-modules: 0.6.2
+
  uri-js@4.4.1:
    dependencies:
      punycode: 2.3.1
@ -3266,6 +3459,8 @@ snapshots:

  util-deprecate@1.0.2: {}

+  uuid@10.0.0: {}
+
  vite@5.4.20(@types/node@24.5.2):
    dependencies:
      esbuild: 0.21.5
@ -3289,6 +3484,8 @@ snapshots:
    transitivePeerDependencies:
      - debug

+  webpack-virtual-modules@0.6.2: {}
+
  which@2.0.2:
    dependencies:
      isexe: 2.0.0
--- a/project.inlang/project_id
+++ b/project.inlang/project_id
@ -0,0 +1 @@
+bkDf3wpqa4gWMSsmqk
--- a/project.inlang/settings.json
+++ b/project.inlang/settings.json
@ -0,0 +1,12 @@
+{
+	"$schema": "https://inlang.com/schema/project-settings",
+	"modules": [
+		"./node_modules/@inlang/plugin-message-format/dist/index.js",
+		"./node_modules/@inlang/plugin-m-function-matcher/dist/index.js"
+	],
+	"plugin.inlang.messageFormat": {
+		"pathPattern": "./messages/{locale}.json"
+	},
+	"baseLocale": "en",
+	"locales": ["en"]
+}
--- a/src/app.html
+++ b/src/app.html
@ -1,5 +1,5 @@
 <!doctype html>
-<html lang="en">
+<html lang="%paraglide.lang%">
 	<head>
 		<meta charset="utf-8" />
 		<meta name="viewport" content="width=device-width, initial-scale=1" />
--- a/src/hooks.server.ts
+++ b/src/hooks.server.ts
@ -0,0 +1,13 @@
+import type { Handle } from '@sveltejs/kit';
+import { paraglideMiddleware } from '$lib/paraglide/server';
+
+const handleParaglide: Handle = ({ event, resolve }) =>
+	paraglideMiddleware(event.request, ({ request, locale }) => {
+		event.request = request;
+
+		return resolve(event, {
+			transformPageChunk: ({ html }) => html.replace('%paraglide.lang%', locale)
+		});
+	});
+
+export const handle: Handle = handleParaglide;
--- a/src/hooks.ts
+++ b/src/hooks.ts
@ -0,0 +1,3 @@
+import { deLocalizeUrl } from '$lib/paraglide/runtime';
+
+export const reroute = (request) => deLocalizeUrl(request.url).pathname;
--- a/src/lib/ScreenInfo.svelte
+++ b/src/lib/ScreenInfo.svelte
@ -1,7 +1,7 @@
 <script lang="ts">
 	import { onMount } from 'svelte';
 	import { fade } from 'svelte/transition';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';

 	let screenResolution = $state('... x ...');
 	let windowResolution = $state('');
@ -27,16 +27,16 @@

 <div class="info">
 	<div class="resolution">
-		<div class="title">{$i18n.t('Screen Resolution')}</div>
+		<div class="title">{m.screenInfo_screenResolution()}</div>
 		<div class="value">{screenResolution}</div>
 		{#if windowResolution && windowResolution !== screenResolution}
 			<div class="window" transition:fade>
-				<div class="title">{$i18n.t('Window Resolution')}</div>
+				<div class="title">{m.screenInfo_windowResolution()}</div>
 				<div class="value">{windowResolution}</div>
 			</div>
 		{/if}
 		{#if dpr !== '1'}
-			<div class="dpr">{$i18n.t('Device Pixel Ratio')}: {dpr}</div>
+			<div class="dpr">{m.screenInfo_devicePixelRatio()}: {dpr}</div>
 		{/if}
 	</div>
 </div>
--- a/src/lib/i18n.ts
+++ b/src/lib/i18n.ts
@ -1,14 +0,0 @@
-import i18next from 'i18next';
-import { createI18nStore } from 'svelte-i18next';
-import enTranslation from './locales/en.json';
-
-i18next.init({
-	lng: 'en',
-	resources: {
-		en: {
-			translation: enTranslation
-		}
-	}
-});
-
-export const i18n = createI18nStore(i18next);
--- a/src/lib/locales/en.json
+++ b/src/lib/locales/en.json
@ -1,48 +0,0 @@
-{
-	"tests": {
-		"audio": {
-			"label": "Audio",
-			"description": "Check your stereo channels or surround audio output, verify if your speakers are in phase."
-		},
-		"av-sync": {
-			"label": "Audio/Video Sync",
-			"description": "Check if your audio and video are in sync, and measure the delay."
-		},
-		"card": {
-			"label": "Card",
-			"description": "Test card for your display or projector, check colors, resolution and geometry."
-		},
-		"camera": {
-			"label": "Camera",
-			"description": "Check whether your webcam or capture device is working, its image quality, resolution and frame rate. Take a snapshot."
-		},
-		"gamepad": {
-			"label": "Gamepad",
-			"description": "Test your gamepad, check if it's working, all the buttons and joysticks, stick drift, dead zones and calibration."
-		},
-		"keyboard": {
-			"label": "Keyboard",
-			"description": "Check if all keys are working and what key codes they send."
-		},
-		"microphone": {
-			"label": "Microphone",
-			"description": "Check if your microphone is working, its quality, volume and noise."
-		},
-		"mouse": {
-			"label": "Mouse",
-			"description": "Check if your mouse or touch device works properly, if there are dead zones or jitter."
-		},
-		"sensors": {
-			"label": "Sensors",
-			"description": "See the output of your device's sensors, e.g. GPS, accelerometer, gyroscope, compass, etc."
-		},
-		"internet": {
-			"label": "Internet speed",
-			"description": "Measure your internet speed, ping and jitter."
-		},
-		"timer": {
-			"label": "High resolution timer",
-			"description": "Display a millisecond resolution timer on screen, useful for measuring video pipeline latency."
-		}
-	}
-}
--- a/src/routes/(fullscreen)/+layout.svelte
+++ b/src/routes/(fullscreen)/+layout.svelte
@ -1,5 +1,5 @@
 <script lang="ts">
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 	interface Props {
 		children?: import('svelte').Snippet;
 	}
@ -7,7 +7,7 @@
 	let { children }: Props = $props();
 </script>

-<a href=".." class="hide-idle"><i class="ti ti-arrow-back"></i> {$i18n.t('Back')}</a>
+<a href=".." class="hide-idle"><i class="ti ti-arrow-back"></i> {m.common_back()}</a>
 {@render children?.()}

 <style>
--- a/src/routes/(pages)/+layout.svelte
+++ b/src/routes/(pages)/+layout.svelte
@ -2,7 +2,7 @@
 	import TestCard from '$lib/TestCard.svelte';
 	import { page } from '$app/state';
 	import { goto } from '$app/navigation';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 	interface Props {
 		children?: import('svelte').Snippet;
 	}
@ -12,7 +12,7 @@

 <TestCard bg on:focus={() => goto('/card')} />
 <main class:sub={!page.data.root}>
-	<a href=".." class="button button-back"><i class="ti ti-arrow-back"></i>{$i18n.t('Back')}</a>
+	<a href=".." class="button button-back"><i class="ti ti-arrow-back"></i>{m.common_back()}</a>
 	{@render children?.()}
 </main>

--- a/src/routes/(pages)/+page.svelte
+++ b/src/routes/(pages)/+page.svelte
@ -2,16 +2,15 @@
 	import { run } from 'svelte/legacy';

 	import { version } from '../../../package.json';
-	import { i18n } from '$lib/i18n';
 	import type { Snapshot } from '@sveltejs/kit';
 	import { fade } from 'svelte/transition';
 	const buildDate = import.meta.env.VITE_BUILD_DATE || '???';
+	import { m } from '$lib/paraglide/messages.js';

 	let search = $state('');

 	type Entry = {
 		id: string;
-		label: string;
 		icon: string;
 	};

@ -25,12 +24,10 @@
 	let superCategories = [
 		{
 			id: 'inputs',
-			label: 'Inputs',
 			icon: 'ti-arrow-down-to-arc'
 		},
 		{
 			id: 'outputs',
-			label: 'Outputs',
 			icon: 'ti-arrow-down-from-arc'
 		}
 	] as const satisfies Entry[];
@ -38,96 +35,81 @@
 	let categories = [
 		{
 			id: 'audio',
-			label: 'Audio',
 			icon: 'ti-volume'
 		},
 		{
 			id: 'video',
-			label: 'Video',
 			icon: 'ti-video'
 		},
 		{
 			id: 'control',
-			label: 'Control',
 			icon: 'ti-hand-finger'
 		},
 		{
 			id: 'misc',
-			label: 'Miscellaneous',
 			icon: 'ti-circle-plus'
 		}
 	] as const satisfies Entry[];

-	const tests: Test[] = [
+	const tests = [
 		{
 			id: 'card',
-			label: 'Test Card',
 			icon: 'ti-device-desktop',
 			categories: ['outputs', 'video']
 		},
 		{
 			id: 'audio',
-			label: 'Audio',
 			icon: 'ti-volume',
 			categories: ['outputs', 'audio']
 		},
 		{
 			id: 'av-sync',
-			label: 'AV Sync',
 			icon: 'ti-time-duration-off',
 			categories: ['outputs', 'video', 'audio']
 		},
 		{
 			id: 'keyboard',
-			label: 'Keyboard',
 			icon: 'ti-keyboard',
 			categories: ['inputs', 'control']
 		},
 		{
 			id: 'mouse',
-			label: 'Mouse',
 			icon: 'ti-mouse',
 			categories: ['inputs', 'control']
 		},
 		{
 			id: 'gamepad',
-			label: 'Gamepad',
 			icon: 'ti-device-gamepad',
 			categories: ['inputs', 'control']
 		},
 		{
 			id: 'camera',
-			label: 'Camera',
 			icon: 'ti-camera',
 			categories: ['inputs', 'video']
 		},
 		{
 			id: 'microphone',
-			label: 'Microphone',
 			icon: 'ti-microphone',
 			categories: ['inputs', 'audio'],
 			disabled: true
 		},
 		{
 			id: 'sensors',
-			label: 'Sensors',
 			icon: 'ti-cpu-2',
 			categories: ['inputs', 'misc'],
 			disabled: true
 		},
 		{
 			id: 'internet',
-			label: 'Internet speed',
 			icon: 'ti-world',
 			categories: ['inputs', 'outputs', 'misc']
 		},
 		{
 			id: 'timer',
-			label: 'High resolution timer',
 			icon: 'ti-alarm',
 			categories: ['video']
 		}
-	];
+	] as const satisfies Test[];

 	let categoriesToIcons = $derived.by(() => {
 		const map = new Map<string, string>();
@ -137,7 +119,7 @@
 		return map;
 	});

-	let filteredTests: Test[] = $state(tests);
+	let filteredTests: Array<(typeof tests)[number]> = $state(tests);
 	let filteredCategories: Category[] = $state([]);

 	function doSearch(search: string) {
@ -146,9 +128,9 @@

 			const searchValue = search.toLocaleLowerCase();
 			return (
-				test.label.includes(searchValue) ||
 				test.id.includes(searchValue) ||
-				$i18n.t(`tests.${test.id}.description`).includes(searchValue)
+				m[`tests_${test.id}_label`]().includes(searchValue) ||
+				m[`tests_${test.id}_description`]().includes(searchValue)
 			);
 		});
 	}
@ -166,10 +148,13 @@

 	let nonEmptyCategories = $derived(
 		categories.filter((category) => {
-			const categoryTests = filteredTests.filter((test) => test.categories.includes(category.id));
+			const categoryTests = filteredTests.filter((test) =>
+				(test.categories as readonly Category[]).includes(category.id)
+			);
 			return categoryTests.some(
 				(test) =>
-					!filteredCategories.length || filteredCategories.every((f) => test.categories.includes(f))
+					!filteredCategories.length ||
+					filteredCategories.every((f) => (test.categories as readonly Category[]).includes(f))
 			);
 		})
 	);
@ -188,7 +173,7 @@

 <nav>
 	<!-- svelte-ignore a11y_autofocus -->
-	<input type="search" placeholder={$i18n.t('Search')} bind:value={search} autofocus />
+	<input type="search" placeholder={m.search()} bind:value={search} autofocus />

 	<div class="options">
 		{#each superCategories as category}
@ -198,7 +183,7 @@
 				class="super"
 			>
 				<i class="ti {category.icon}"></i>
-				{$i18n.t(category.label)}
+				{m[`category_${category.id}`]()}
 			</button>
 		{/each}
 		<div class="separator"></div>
@ -208,37 +193,37 @@
 				class:active={!filteredCategories.length || filteredCategories.includes(category.id)}
 			>
 				<i class="ti {category.icon}"></i>
-				{$i18n.t(category.label)}
+				{m[`category_${category.id}`]()}
 			</button>
 		{/each}
 	</div>
 	<div class="tests">
 		{#each nonEmptyCategories as category}
-			{#if tests.filter((test) => test.categories.includes(category.id)).length > 0}
-				<h2 transition:fade={{ duration: 200 }}>{$i18n.t(category.label)}</h2>
-				{#each filteredTests.filter((test) => test.categories.includes(category.id) && filteredCategories.every( (f) => test.categories.includes(f) )) as test}
+			{#if tests.filter( (test) => (test.categories as readonly Category[]).includes(category.id) ).length > 0}
+				<h2 transition:fade={{ duration: 200 }}>{m[`category_${category.id}`]()}</h2>
+				{#each filteredTests.filter((test) => (test.categories as readonly Category[]).includes(category.id) && filteredCategories.every( (f) => (test.categories as readonly Category[]).includes(f) )) as test}
 					<a
 						class="test"
 						href={test.id}
-						class:disabled={test.disabled}
+						class:disabled={(test as Test).disabled}
 						transition:fade={{ duration: 200 }}
 					>
 						<i class="ti {test.icon}"></i>
 						<div class="label">
-							<span class="name">{$i18n.t(test.label)}</span>
+							<span class="name">{m[`tests_${test.id}_label`]()}</span>
 							{#each test.categories as category}
 								<span class="category"><i class="ti {categoriesToIcons.get(category)}"></i></span>
 							{/each}
 						</div>
 						<div class="description">
-							{$i18n.t(`tests.${test.id}.description`)}
+							{m[`tests_${test.id}_description`]()}
 						</div>
 					</a>
 				{/each}
 			{/if}
 		{:else}
 			<p>
-				{$i18n.t('No tests found.')}
+				{m.noTestsFound()}
 			</p>
 		{/each}
 	</div>
--- a/src/routes/(pages)/audio/(channels)/+layout.svelte
+++ b/src/routes/(pages)/audio/(channels)/+layout.svelte
@ -6,7 +6,7 @@

 	let { children }: Props = $props();

-	let channelsEl: HTMLDivElement = $state();
+	let channelsEl: HTMLDivElement | undefined = $state();
 </script>

 <div class="channels" bind:this={channelsEl}>
--- a/src/routes/(pages)/audio/(channels)/channels-5.1/+page.svelte
+++ b/src/routes/(pages)/audio/(channels)/channels-5.1/+page.svelte
@ -6,20 +6,20 @@
 	import rearLeftUrl from '@assets/audio/5.1/Rear_Left.mp3';
 	import rearRightUrl from '@assets/audio/5.1/Rear_Right.mp3';
 	import LfeUrl from '@assets/audio/5.1/LFE_Noise.mp3';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 </script>

 <div class="row">
-	<Speaker src={frontLeftUrl} left>{$i18n.t('Front Left')}</Speaker>
+	<Speaker src={frontLeftUrl} left>{m.audio_channel_frontLeft()}</Speaker>
 	<div class="center">
-		<Speaker src={frontCenterUrl} center>{$i18n.t('Front Center')}</Speaker>
+		<Speaker src={frontCenterUrl} center>{m.audio_channel_frontCenter()}</Speaker>
 	</div>
-	<Speaker src={frontRightUrl} right>{$i18n.t('Front Right')}</Speaker>
+	<Speaker src={frontRightUrl} right>{m.audio_channel_frontRight()}</Speaker>
 </div>
 <div class="row">
-	<Speaker src={rearLeftUrl} left>{$i18n.t('Rear Left')}</Speaker>
-	<Speaker src={rearRightUrl} right>{$i18n.t('Rear Right')}</Speaker>
+	<Speaker src={rearLeftUrl} left>{m.audio_channel_rearLeft()}</Speaker>
+	<Speaker src={rearRightUrl} right>{m.audio_channel_rearRight()}</Speaker>
 </div>
-<Speaker src={LfeUrl} lfe>{$i18n.t('LFE')}</Speaker>
+<Speaker src={LfeUrl} lfe>{m.audio_channel_lfe()}</Speaker>

 <div class="label">5.1</div>
--- a/src/routes/(pages)/audio/(channels)/channels-7.1/+page.svelte
+++ b/src/routes/(pages)/audio/(channels)/channels-7.1/+page.svelte
@ -8,25 +8,25 @@
 	import rearLeftUrl from '@assets/audio/7.1/Rear_Left.mp3';
 	import rearRightUrl from '@assets/audio/7.1/Rear_Right.mp3';
 	import LfeUrl from '@assets/audio/7.1/LFE_Noise.mp3';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 </script>

 <div class="row">
-	<Speaker src={frontLeftUrl} left>{$i18n.t('Front Left')}</Speaker>
+	<Speaker src={frontLeftUrl} left>{m.audio_channel_frontLeft()}</Speaker>
 	<div class="center">
-		<Speaker src={frontCenterUrl} center>{$i18n.t('Front Center')}</Speaker>
+		<Speaker src={frontCenterUrl} center>{m.audio_channel_frontCenter()}</Speaker>
 	</div>
-	<Speaker src={frontRightUrl} right>{$i18n.t('Front Right')}</Speaker>
+	<Speaker src={frontRightUrl} right>{m.audio_channel_frontRight()}</Speaker>
 </div>
 <div class="row">
-	<Speaker src={sideLeftUrl} left>{$i18n.t('Side Left')}</Speaker>
-	<Speaker src={sideRightUrl} right>{$i18n.t('Side Right')}</Speaker>
+	<Speaker src={sideLeftUrl} left>{m.audio_channel_sideLeft()}</Speaker>
+	<Speaker src={sideRightUrl} right>{m.audio_channel_sideRight()}</Speaker>
 </div>

 <div class="row">
-	<Speaker src={rearLeftUrl} left>{$i18n.t('Rear Left')}</Speaker>
-	<Speaker src={rearRightUrl} right>{$i18n.t('Rear Right')}</Speaker>
+	<Speaker src={rearLeftUrl} left>{m.audio_channel_rearLeft()}</Speaker>
+	<Speaker src={rearRightUrl} right>{m.audio_channel_rearRight()}</Speaker>
 </div>
-<Speaker src={LfeUrl} lfe>{$i18n.t('LFE')}</Speaker>
+<Speaker src={LfeUrl} lfe>{m.audio_channel_lfe()}</Speaker>

 <div class="label">7.1</div>
--- a/src/routes/(pages)/audio/(channels)/cycle-button.svelte
+++ b/src/routes/(pages)/audio/(channels)/cycle-button.svelte
@ -1,6 +1,6 @@
 <script lang="ts">
 	import { onDestroy } from 'svelte';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';

 	interface Props {
 		element: HTMLElement;
@ -51,8 +51,8 @@
 <button onclick={onClick}>
 	<i class="ti ti-refresh"></i>
 	{#if cycling}
-		{$i18n.t('Stop Cycling')}
+		{m.audio_stopCycling()}
 	{:else}
-		{$i18n.t('Cycle through')}
+		{m.audio_cycleThrough()}
 	{/if}
 </button>
--- a/src/routes/(pages)/audio/(channels)/stereo-test.svelte
+++ b/src/routes/(pages)/audio/(channels)/stereo-test.svelte
@ -4,16 +4,16 @@
 	import rightUrl from '@assets/audio/stereo/Right.mp3';
 	import Speaker from './speaker.svelte';
 	import CycleButton from './cycle-button.svelte';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';

-	let speakersEl: HTMLElement = $state();
+	let speakersEl: HTMLElement | undefined = $state();
 </script>

 <div class="test">
 	<div class="speakers" bind:this={speakersEl}>
-		<Speaker src={leftUrl} left inline>{$i18n.t('Left')}</Speaker>
-		<Speaker src={centerUrl} center inline>{$i18n.t('Center')}</Speaker>
-		<Speaker src={rightUrl} right inline>{$i18n.t('Right')}</Speaker>
+		<Speaker src={leftUrl} left inline>{m.audio_channel_left()}</Speaker>
+		<Speaker src={centerUrl} center inline>{m.audio_channel_center()}</Speaker>
+		<Speaker src={rightUrl} right inline>{m.audio_channel_right()}</Speaker>
 	</div>
 	<CycleButton element={speakersEl} />
 </div>
--- a/src/routes/(pages)/audio/+layout.svelte
+++ b/src/routes/(pages)/audio/+layout.svelte
@ -1,5 +1,5 @@
 <script lang="ts">
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 	interface Props {
 		children?: import('svelte').Snippet;
 	}
@ -7,5 +7,5 @@
 	let { children }: Props = $props();
 </script>

-<h2><i class="ti ti-volume"></i> {$i18n.t('Audio test')}</h2>
+<h2><i class="ti ti-volume"></i> {m.audio_title()}</h2>
 {@render children?.()}
--- a/src/routes/(pages)/audio/+page.svelte
+++ b/src/routes/(pages)/audio/+page.svelte
@ -1,23 +1,23 @@
 <script lang="ts">
 	import StereoTest from './(channels)/stereo-test.svelte';
 	import PhaseTest from './phase.svelte';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 </script>

 <article>
-	<h3>{$i18n.t('Channel tests')}</h3>
-	<h4>{$i18n.t('Stereo')}</h4>
+	<h3>{m.audio_channelTests()}</h3>
+	<h4>{m.audio_stereo()}</h4>
 	<section>
 		<StereoTest />
 	</section>
-	<h4>{$i18n.t('Surround audio')}</h4>
+	<h4>{m.audio_surroundAudio()}</h4>
 	<section>
 		<ul>
-			<li><a class="button" href="channels-5.1">{$i18n.t('5.1 Surround')}</a></li>
-			<li><a class="button" href="channels-7.1">{$i18n.t('7.1 Surround')}</a></li>
+			<li><a class="button" href="channels-5.1">{m.audio_surround51()}</a></li>
+			<li><a class="button" href="channels-7.1">{m.audio_surround71()}</a></li>
 		</ul>
 	</section>
-	<h3>{$i18n.t('Phase test')}</h3>
+	<h3>{m.audio_phaseTest()}</h3>
 	<PhaseTest />
 </article>

--- a/src/routes/(pages)/audio/phase.svelte
+++ b/src/routes/(pages)/audio/phase.svelte
@ -1,6 +1,6 @@
 <script lang="ts">
 	import { onMount } from 'svelte';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';

 	let frequency = $state(60);
 	let playing = $state(false);
@ -54,13 +54,13 @@

 <div class="test">
 	<label>
-		{$i18n.t('Frequency')}
+		{m.audio_frequency()}
 		<input type="number" bind:value={frequency} min="20" max="20000" disabled={playing} />Hz
 	</label>
 	<div class="controls">
-		<button onclick={() => start('inPhase')}>{$i18n.t('In Phase')}</button>
-		<button onclick={() => start('outOfPhase')}>{$i18n.t('Out of Phase')}</button>
-		<button class="stop" onclick={stop} disabled={!playing}>{$i18n.t('Stop')}</button>
+		<button onclick={() => start('inPhase')}>{m.audio_inPhase()}</button>
+		<button onclick={() => start('outOfPhase')}>{m.audio_outOfPhase()}</button>
+		<button class="stop" onclick={stop} disabled={!playing}>{m.audio_stop()}</button>
 	</div>
 </div>

--- a/src/routes/(pages)/av-sync/+page.svelte
+++ b/src/routes/(pages)/av-sync/+page.svelte
@ -1,10 +1,10 @@
 <script lang="ts">
 	import videoUrl from '@assets/avsync.webm';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 	let paused = $state(true);
 </script>

-<h2><i class="ti ti-time-duration-off"></i> {$i18n.t('Audio/Video Synchronization')}</h2>
+<h2><i class="ti ti-time-duration-off"></i> {m.avSync_title()}</h2>
 <!-- svelte-ignore a11y_media_has_caption -->
 <video
 	class:playing={!paused}
--- a/src/routes/(pages)/camera/+page.svelte
+++ b/src/routes/(pages)/camera/+page.svelte
@ -4,10 +4,10 @@
 	import { onDestroy, onMount } from 'svelte';
 	import { browser } from '$app/environment';
 	import debug from 'debug';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 	const dbg = debug('app:camera');

-	let video: HTMLVideoElement = $state();
+	let video: HTMLVideoElement | undefined = $state();
 	let devices: MediaDeviceInfo[] = $state([]);
 	let currentDevice: string | undefined = $state();

@ -29,7 +29,7 @@

 	onMount(() => {
 		refreshDevices();
-		video.addEventListener('playing', () => {
+		video?.addEventListener('playing', () => {
 			if (browser && video?.srcObject instanceof MediaStream) {
 				deviceInfo = {
 					resolution: `${video.videoWidth}x${video.videoHeight}`,
@ -66,6 +66,7 @@
 					}
 				})
 				.then((stream) => {
+					if (!video) return;
 					video.srcObject = stream;
 					refreshDevices();
 				});
@ -73,6 +74,7 @@
 	});

 	async function takeSnapshot() {
+		if (!video) return;
 		const canvas = document.createElement('canvas');
 		canvas.width = video.videoWidth;
 		canvas.height = video.videoHeight;
@ -87,26 +89,26 @@
 	}
 </script>

-<h2><i class="ti ti-camera"></i> {$i18n.t('Camera test')}</h2>
+<h2><i class="ti ti-camera"></i> {m.camera_title()}</h2>

 <div class="controls">
 	<label>
-		{$i18n.t('Device')}
+		{m.camera_device()}
 		<select bind:value={currentDevice} disabled={!devices.length}>
 			{#each devices as device}
 				<option value={device.deviceId}>{device.label || '???'}</option>
 			{:else}
-				<option>{$i18n.t('No camera found')}</option>
+				<option>{m.camera_noCameraFound()}</option>
 			{/each}
 		</select>
 	</label>
 	<button onclick={refreshDevices}>
 		<i class="ti ti-refresh"></i>
-		{$i18n.t('Refresh')}
+		{m.camera_refresh()}
 	</button>
 	<div class="separator"></div>
 	<label>
-		{$i18n.t('Resolution')}
+		{m.camera_resolution()}
 		<select bind:value={requestResolution}>
 			<option value="auto">Auto</option>
 			<option value={[4096, 2160]}>4096x2160</option>
@ -118,7 +120,7 @@
 		</select>
 	</label>
 	<label>
-		{$i18n.t('Frame rate')}
+		{m.camera_frameRate()}
 		<select bind:value={requestFramerate}>
 			<option value="auto">Auto</option>
 			<option value={120}>120 fps</option>
@ -138,35 +140,37 @@
 		<!-- svelte-ignore a11y_missing_attribute -->
 		<!--suppress HtmlRequiredAltAttribute -->
 		<img src={snapshot} />
-		<button onclick={() => (snapshot = undefined)}><i class="ti ti-x"></i></button>
+		<button onclick={() => (snapshot = undefined)} aria-label={m.camera_closeSnapshot()}
+			><i class="ti ti-x"></i></button
+		>
 	{/if}
 </div>

 <footer>
 	{#if !currentDevice}
-		<span class="subdued">{$i18n.t('No camera selected')}</span>
+		<span class="subdued">{m.camera_noCameraSelected()}</span>
 	{:else}
 		<ul>
 			{#key currentDevice}
 				<li>
-					{$i18n.t('Resolution')}: <strong>{deviceInfo.resolution || '???'}</strong>
+					{m.camera_resolution()}: <strong>{deviceInfo.resolution || '???'}</strong>
 				</li>
 				<li>
-					{$i18n.t('Frame rate')}: <strong>{deviceInfo.frameRate || '???'}</strong>
+					{m.camera_frameRate()}: <strong>{deviceInfo.frameRate || '???'}</strong>
 				</li>
 			{/key}
 		</ul>
 		<div class="controls">
 			<button onclick={takeSnapshot}>
 				<i class="ti ti-camera"></i>
-				{$i18n.t('Take picture')}
+				{m.camera_takePicture()}
 			</button>
 			<button onclick={() => (flipped = !flipped)}>
 				<i class="ti ti-flip-vertical"></i>
 				{#if flipped}
-					{$i18n.t('Unflip image')}
+					{m.camera_unflipImage()}
 				{:else}
-					{$i18n.t('Flip image')}
+					{m.camera_flipImage()}
 				{/if}
 			</button>
 		</div>
--- a/src/routes/(pages)/gamepad/+page.svelte
+++ b/src/routes/(pages)/gamepad/+page.svelte
@ -4,7 +4,7 @@
 	import { onMount } from 'svelte';
 	import { browser } from '$app/environment';
 	import debug from 'debug';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';

 	const dbg = debug('app:camera');

@ -101,27 +101,27 @@
 	});
 </script>

-<h2><i class="ti ti-device-gamepad"></i> {$i18n.t('Gamepad & Joystick Tests')}</h2>
+<h2><i class="ti ti-device-gamepad"></i> {m.gamepad_title()}</h2>
 <div class="controls">
 	<label>
-		{$i18n.t('Device')}
+		{m.gamepad_device()}
 		<select disabled={!gamepads.length}>
 			{#each gamepads as gamepad}
 				<option value={gamepad.index}>{gamepad.id}</option>
 			{:else}
-				<option>{$i18n.t('No gamepads detected. (Try pressing a button)')}</option>
+				<option>{m.gamepad_noGamepadsDetected()}</option>
 			{/each}
 		</select>
 	</label>
 	<button onclick={refreshGamepads}>
 		<i class="ti ti-refresh"></i>
-		{$i18n.t('Refresh')}
+		{m.gamepad_refresh()}
 	</button>
 </div>

 {#if currentGamepad}
 	<section>
-		<h3>{$i18n.t('Buttons')}</h3>
+		<h3>{m.gamepad_buttons()}</h3>
 		<ul class="buttons">
 			{#each buttons as button, i}
 				<li class:pressed={button.pressed}>{i}</li>
@ -129,7 +129,7 @@
 		</ul>
 	</section>
 	<section>
-		<h3>{$i18n.t('Axes')}</h3>
+		<h3>{m.gamepad_axes()}</h3>
 		<div class="axes">
 			{#each axes as axis, i (i)}
 				<div class="axis">
@ -139,7 +139,7 @@
 						<span>{axis.toFixed(2)}</span>
 					</div>
 					<details>
-						<summary>{$i18n.t('History')}</summary>
+						<summary>{m.gamepad_history()}</summary>
 						<canvas width="512" height="128" data-axis={i}></canvas>
 					</details>
 				</div>
--- a/src/routes/(pages)/internet/+page.svelte
+++ b/src/routes/(pages)/internet/+page.svelte
@ -1,8 +1,8 @@
 <script>
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';
 </script>

-<h2><i class="ti ti-world"></i> {$i18n.t('Internet speed')}</h2>
+<h2><i class="ti ti-world"></i> {m.internet_title()}</h2>

 <div class="test">
 	<iframe src="//openspeedtest.com/speedtest" title="OpenSpeedTest Embed"></iframe>
--- a/src/routes/(pages)/keyboard/+page.svelte
+++ b/src/routes/(pages)/keyboard/+page.svelte
@ -1,9 +1,9 @@
 <script lang="ts">
 	import { onMount } from 'svelte';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';

-	let key: string = $state();
-	let code: string = $state();
+	let key: string | undefined = $state();
+	let code: string | undefined = $state();
 	let pressedKeys: string[] = $state([]);
 	onMount(() => {
 		document.addEventListener('keydown', (event) => {
@ -15,8 +15,8 @@
 	});
 </script>

-<h2>{$i18n.t('Keyboard testing')}</h2>
-<p>{$i18n.t('Press a key on the keyboard to see the event object and the key code.')}</p>
+<h2>{m.keyboard_title()}</h2>
+<p>{m.keyboard_instruction()}</p>
 <div class="current">
 	{#if key}
 		<span>{key}</span>
@ -26,7 +26,7 @@
 	{/if}
 </div>

-<p>{$i18n.t('Pressed keys:')}</p>
+<p>{m.keyboard_pressedKeys()}</p>
 <ul>
 	{#each pressedKeys as key}
 		<li>{key}</li>
--- a/src/routes/(pages)/timer/+page.svelte
+++ b/src/routes/(pages)/timer/+page.svelte
@ -1,6 +1,6 @@
 <script lang="ts">
 	import { onMount } from 'svelte';
-	import { i18n } from '$lib/i18n';
+	import { m } from '$lib/paraglide/messages';

 	let time = $state(0);
 	let fps = 0;
@ -36,12 +36,12 @@
 	});
 </script>

-<h2><i class="ti ti-alarm"></i> {$i18n.t('High resolution timer')}</h2>
+<h2><i class="ti ti-alarm"></i> {m.timer_title()}</h2>
 <div class="display">
 	<div class="time">{time}</div>
-	<div class="fps">{displayFps} {$i18n.t('FPS')}</div>
+	<div class="fps">{displayFps} {m.timer_fps()}</div>
 </div>
-<button onclick={restart}>{$i18n.t('Restart')}</button>
+<button onclick={restart}>{m.timer_restart()}</button>

 <style>
 	div,
--- a/vite.config.ts
+++ b/vite.config.ts
@ -1,9 +1,16 @@
+import { paraglideVitePlugin } from '@inlang/paraglide-js';
 import { sveltekit } from '@sveltejs/kit/vite';
 import { defineConfig } from 'vite';
 import * as path from 'path';

 export default defineConfig({
-	plugins: [sveltekit()],
+	plugins: [
+		sveltekit(),
+		paraglideVitePlugin({
+			project: './project.inlang',
+			outdir: './src/lib/paraglide'
+		})
+	],
 	resolve: {
 		alias: {
 			'@assets': path.join(__dirname, 'assets/generated')