diff --git a/package-lock.json b/package-lock.json
index 597641a64fa49e3b7dc5be9dc4451292d7dfb9f2..5313a1e4e3f2c3587e9d1cfc3b1307f93dfb5e33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,6 +39,7 @@
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         "file-saver": "^2.0.5",
         "he": "^1.2.0",
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         "katex": "^0.16.0",
         "material-design-icons": "^3.0.1",
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@@ -8187,6 +8186,14 @@
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+      "resolved": "https://registry.npmjs.org/corser/-/corser-2.0.1.tgz",
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@@ -12987,6 +12994,17 @@
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+      "resolved": "https://registry.npmjs.org/html-encoding-sniffer/-/html-encoding-sniffer-3.0.0.tgz",
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@@ -13116,6 +13134,107 @@
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+        "mime": "^1.6.0",
+        "minimist": "^1.2.6",
+        "opener": "^1.5.1",
+        "portfinder": "^1.0.28",
+        "secure-compare": "3.0.1",
+        "union": "~0.5.0",
+        "url-join": "^4.0.1"
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+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
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+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
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+      "bin": {
+        "mime": "cli.js"
+      },
+      "engines": {
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+    "node_modules/http-server/node_modules/supports-color": {
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+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
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+      },
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@@ -15608,7 +15727,6 @@
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         "url": "https://github.com/sponsors/ljharb"
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@@ -16503,6 +16621,14 @@
         "opencollective-postinstall": "index.js"
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+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/opener/-/opener-1.5.2.tgz",
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+      "bin": {
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@@ -17188,6 +17314,38 @@
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+    "node_modules/portfinder": {
+      "version": "1.0.32",
+      "resolved": "https://registry.npmjs.org/portfinder/-/portfinder-1.0.32.tgz",
+      "integrity": "sha512-on2ZJVVDXRADWE6jnQaX0ioEylzgBpQk8r55NE4wjXW1ZxO+BgDlY6DXwj20i0V8eB4SenDQ00WEaxfiIQPcxg==",
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+        "debug": "^3.2.7",
+        "mkdirp": "^0.5.6"
+      },
+      "engines": {
+        "node": ">= 0.12.0"
+      }
+    },
+    "node_modules/portfinder/node_modules/debug": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.7.tgz",
+      "integrity": "sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==",
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+      }
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+    "node_modules/portfinder/node_modules/mkdirp": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+      "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+      "dependencies": {
+        "minimist": "^1.2.6"
+      },
+      "bin": {
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@@ -19498,6 +19656,11 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
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+    "node_modules/secure-compare": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/secure-compare/-/secure-compare-3.0.1.tgz",
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       "dev": true
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+    "node_modules/union": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/union/-/union-0.5.0.tgz",
+      "integrity": "sha512-N6uOhuW6zO95P3Mel2I2zMsbsanvvtgn6jVqJv4vbVcz/JN0OkL9suomjQGmWtxJQXOCqUJvquc1sMeNz/IwlA==",
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@@ -21760,6 +21934,11 @@
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+      "resolved": "https://registry.npmjs.org/url-join/-/url-join-4.0.1.tgz",
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@@ -22367,6 +22546,17 @@
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+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-2.0.0.tgz",
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@@ -26786,7 +26975,6 @@
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@@ -28748,6 +28936,11 @@
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+      "resolved": "https://registry.npmjs.org/corser/-/corser-2.0.1.tgz",
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@@ -32375,6 +32568,14 @@
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+      "version": "3.0.0",
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@@ -32471,6 +32672,76 @@
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+      "resolved": "https://registry.npmjs.org/http-server/-/http-server-14.1.1.tgz",
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+        "chalk": "^4.1.2",
+        "corser": "^2.0.1",
+        "he": "^1.2.0",
+        "html-encoding-sniffer": "^3.0.0",
+        "http-proxy": "^1.18.1",
+        "mime": "^1.6.0",
+        "minimist": "^1.2.6",
+        "opener": "^1.5.1",
+        "portfinder": "^1.0.28",
+        "secure-compare": "3.0.1",
+        "union": "~0.5.0",
+        "url-join": "^4.0.1"
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+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
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+    "opener": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/opener/-/opener-1.5.2.tgz",
+      "integrity": "sha512-ur5UIdyw5Y7yEj9wLzhqXiy6GZ3Mwx0yGI+5sMn2r0N0v3cKJvUmFH5yPP+WXh9e0xfyzyJX95D8l088DNFj7A=="
+    },
     "optionator": {
       "version": "0.9.1",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.1.tgz",
@@ -35556,6 +35831,34 @@
       "integrity": "sha512-k+YsbhpA9e+EFfKjTCH3VW6aoKlyNYI6NYdTfDL4CIvFnvsuO84ttonmZE7rc+v23SLTH8XX+5w/Ak9v0xGY4g==",
       "dev": true
     },
+    "portfinder": {
+      "version": "1.0.32",
+      "resolved": "https://registry.npmjs.org/portfinder/-/portfinder-1.0.32.tgz",
+      "integrity": "sha512-on2ZJVVDXRADWE6jnQaX0ioEylzgBpQk8r55NE4wjXW1ZxO+BgDlY6DXwj20i0V8eB4SenDQ00WEaxfiIQPcxg==",
+      "requires": {
+        "async": "^2.6.4",
+        "debug": "^3.2.7",
+        "mkdirp": "^0.5.6"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "3.2.7",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.7.tgz",
+          "integrity": "sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==",
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "mkdirp": {
+          "version": "0.5.6",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
+          "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
+          "requires": {
+            "minimist": "^1.2.6"
+          }
+        }
+      }
+    },
     "postcss": {
       "version": "8.4.16",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.16.tgz",
@@ -37179,6 +37482,11 @@
       "resolved": "https://registry.npmjs.org/screenfull/-/screenfull-6.0.2.tgz",
       "integrity": "sha512-AQdy8s4WhNvUZ6P8F6PB21tSPIYKniic+Ogx0AacBMjKP1GUHN2E9URxQHtCusiwxudnCKkdy4GrHXPPJSkCCw=="
     },
+    "secure-compare": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/secure-compare/-/secure-compare-3.0.1.tgz",
+      "integrity": "sha512-AckIIV90rPDcBcglUwXPF3kg0P0qmPsPXAj6BBEENQE1p5yA1xfmDJzfi1Tappj37Pv2mVbKpL3Z1T+Nn7k1Qw=="
+    },
     "select": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/select/-/select-1.1.2.tgz",
@@ -38770,6 +39078,14 @@
         }
       }
     },
+    "union": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/union/-/union-0.5.0.tgz",
+      "integrity": "sha512-N6uOhuW6zO95P3Mel2I2zMsbsanvvtgn6jVqJv4vbVcz/JN0OkL9suomjQGmWtxJQXOCqUJvquc1sMeNz/IwlA==",
+      "requires": {
+        "qs": "^6.4.0"
+      }
+    },
     "unique-filename": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/unique-filename/-/unique-filename-1.1.1.tgz",
@@ -38921,6 +39237,11 @@
         "punycode": "^2.1.0"
       }
     },
+    "url-join": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/url-join/-/url-join-4.0.1.tgz",
+      "integrity": "sha512-jk1+QP6ZJqyOiuEI9AEWQfju/nB2Pw466kbA0LEZljHwKeMgd9WrAEgEGxjPDD2+TNbbb37rTyhEfrCXfuKXnA=="
+    },
     "url-parse": {
       "version": "1.5.10",
       "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.5.10.tgz",
@@ -39378,6 +39699,14 @@
       "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.4.tgz",
       "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg=="
     },
+    "whatwg-encoding": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-2.0.0.tgz",
+      "integrity": "sha512-p41ogyeMUrw3jWclHWTQg1k05DSVXPLcVxRTYsXUk+ZooOCZLcoYgPZ/HL/D/N+uQPOtcp1me1WhBEaX02mhWg==",
+      "requires": {
+        "iconv-lite": "0.6.3"
+      }
+    },
     "which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
diff --git a/package.json b/package.json
index 5abbd69aed925f383812edec1ba9a9fd9db3a7d2..ebbed23c05d463a9ae695b88b9e926804197f94d 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,9 @@
     "release-windows": "npm run build-no-pdf && npm run release-windows-nocompile",
     "release-all": "node scripts/clean_release.js && npm run build-no-pdf && npm run update-dist-index-mimetypes && \"node_modules/.bin/electron-builder\" && \"node_modules/.bin/electron-builder\" --mac && \"node_modules/.bin/electron-builder\" --win",
     "compodoc": "node \"node_modules/@compodoc/compodoc/bin/index-cli.js\" -p src/tsconfig.app.json -s --language fr-FR -d compodoc-fr",
-    "viz": "tsviz -recursive src/ nghyd_class_diagram.png"
+    "viz": "tsviz -recursive src/ nghyd_class_diagram.png",
+    "webapp-nocompile" : "\"node_modules/.bin/http-server\" dist",
+    "webapp" : "npm run build-no-pdf && npm run webapp-nocompile"
   },
   "private": true,
   "dependencies": {
@@ -66,6 +68,7 @@
     "core-js": "^3.23.3",
     "file-saver": "^2.0.5",
     "he": "^1.2.0",
+    "http-server": "^14.1.1",
     "jalhyd": "file:./jalhyd",
     "katex": "^0.16.0",
     "material-design-icons": "^3.0.1",