diff --git a/.gitignore b/.gitignore
index 9bce4aeace85551df79a31cfa8bc4dfca6726339..2d1cac7ef95269df6d56aef31d3dff76ffafd243 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 # compiled output
 /dist
 /tmp
+/release
 /out-tsc
 /src/assets/docs-*
 /compodoc-fr
diff --git a/README.md b/README.md
index 803a0d3fb85b8b9f913c7069fea7d4312b444014..e406de7bd623099f70a874cfc9fddcc144323a25 100644
--- a/README.md
+++ b/README.md
@@ -193,3 +193,55 @@ Custom Material SVG Icons will only show up when the application is deployed on
 4. Dans le constructeur de _FormulaireService_, ajouter une entrée dans `this.calculatorPaths` pour fournir le préfixe des fichiers de configuration/internationalisation.
 
 5. **Si une nouvelle classe a été créée à l'étape 2**, dans la méthode _FormulaireService.newFormulaire()_, compléter le _switch_ pour fournir la classe à instancier.
+
+# Build desktop packages with Electron
+
+## linux .deb package
+
+Execute `npm run release-linux`. Find the .deb package in `/release`.
+
+Running `dpkg -i cassiopee_*.deb` will install Cassiopée in `/opt/Cassiopee`
+
+## windows installer
+
+Several npm scripts of `package.json` won't work with windows (for ex. "preprocess"). Building
+the Electron package is a little more complicated.
+
+### install dependencies
+ * Git, for example [https://gitforwindows.org](https://gitforwindows.org)
+ * Nodejs [https://nodejs.org/en/download](https://nodejs.org/en/download)
+ * typescript compiler (system wide) : `npm install -g typescript`
+ * angular cli (system wide) : `npm install -g @angular/cli`
+ * electron-builder (system wide) : `npm install -g electron-builder`
+
+### build jalhyd
+Clone `jalhyd` repository.
+
+Install packages with `npm install`.
+
+As `preprocess` does not work, copy `src/date_revision.ts` file from a linux build, or create it with the following (example) content :
+```typescript
+export const jalhydDateRev = "2019-05-24";
+export const jalhydVersion = "stable-105-gdfc538b";
+```
+
+As `mkdocs` does not work, copy `src/assets/docs-fr` folder **from a linux build**.
+
+Compile jalhyd with `tsc --p "src/tsconfig.app.json"`
+
+
+### build nghyd
+Clone `nghyd` repository.
+
+Install packages with `npm install`.
+
+As `preprocess` does not work, copy `src/date_revision.ts` file from a linux build, or create it with the following (example) content :
+```typescript
+export const nghydDateRev = "2019-05-28";
+export const nghydVersion = "4.3.0-119-ga6ef812";
+```
+Compile nghyd with `ng build --prod --build-optimizer=false`
+
+Build package with `electron-builder`. Find the generated installer in `/release`.
+
+Running the generated installer will install Cassiopée in `C:\Users\YourUser\AppData\local\Programs\cassiopee`
diff --git a/electron-builder.yml b/electron-builder.yml
new file mode 100644
index 0000000000000000000000000000000000000000..2d3f9a1a6bd6d14637fc35c00eb9d940064f0354
--- /dev/null
+++ b/electron-builder.yml
@@ -0,0 +1,45 @@
+appId: fr.irstea.cassiopee
+productName: Cassiopée
+
+directories:
+  output: release
+  buildResources: "electron"
+
+files:
+  - "**/*"
+  - "!**/*.ts"
+  - "!*.code-workspace"
+  - "!LICENSE.md"
+  - "!package.json"
+  - "!package-lock.json"
+  - "!src/"
+  - "!e2e/"
+  - "!doc/"
+  - "!docs-fr/"
+  - "!compodoc-fr/"
+  - "!hooks/"
+  - "!node_modules/"
+  - "!angular.json"
+  - "!_config.yml"
+  - "!karma.conf.js"
+  - "!tsconfig.json"
+  - "!tslint.json"
+
+linux:
+  target:
+    - "deb"
+    #- "AppImage"
+    #- "snap"
+  category: science
+  icon: dist
+
+deb:
+  maintainer: irstea
+
+mac:
+  target: dmg
+
+win:
+  target:
+   - nsis
+   #- portable
diff --git a/electron/icon.png b/electron/icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..dcee9288fb8d0d2a66ea0a2f1d44047d2d227a49
Binary files /dev/null and b/electron/icon.png differ
diff --git a/main.js b/main.js
new file mode 100644
index 0000000000000000000000000000000000000000..ed3363069a45cba14cb4de32f3a21b52eeccd8a7
--- /dev/null
+++ b/main.js
@@ -0,0 +1,76 @@
+const { app, dialog, BrowserWindow } = require('electron');
+
+let win;
+function createWindow () {
+    // Create the browser window.
+    win = new BrowserWindow({ width: 800, height: 600 });
+
+    // and load the index.html of the app. 
+    win.loadFile("./dist/index.html");
+
+    // Hide menu bar.
+    win.setMenuBarVisibility(false)
+
+    // Open the DevTools.
+    // win.webContents.openDevTools();
+
+    // Open external doc links in specific window
+    /* win.webContents.on('new-window', (event, url, frameName, disposition, options) => {
+        event.preventDefault();
+        // win.src = url;
+        const win2 = new BrowserWindow({
+            webContents: options.webContents, // use existing webContents if provided
+            show: false
+        });
+        win2.webContents.openDevTools();
+        win2.once('ready-to-show', () => win2.show());
+        if (!options.webContents) {
+            win2.loadURL(url); // existing webContents will be navigated automatically
+        }
+        event.newGuest = win2;
+    }); */
+
+    // Close the app.
+    win.on('close', () => {
+        // @TODO does not render properly on Linux
+        /* var choice = dialog.showMessageBox(this,
+            {
+              type: 'question',
+              buttons: ['Yes', 'No'],
+              title: 'Confirm',
+              message: 'Are you sure you want to quit?'
+           }
+        );
+        if(choice == 1){
+            e.preventDefault();
+        } */
+        win.destroy();
+    });
+
+    // Emitted when the window is closed.
+    win.on('closed', () => {
+        win = null;
+    })
+};
+
+// This method will be called when Electron has finished
+// initialization and is ready to create browser windows.
+// Some APIs can only be used after this event occurs.
+app.on('ready', createWindow);
+
+// Quit when all windows are closed.
+app.on('window-all-closed', () => {
+    // On macOS it is common for applications and their menu bar
+    // to stay active until the user quits explicitly with Cmd + Q
+    if (process.platform !== 'darwin') {
+        app.quit();
+    }
+});
+
+app.on('activate', () => {
+    // On macOS it's common to re-create a window in the app when the
+    // dock icon is clicked and there are no other windows open.
+    if (win === null) {
+        createWindow()
+    }
+});
diff --git a/mkdocs.yml b/mkdocs.yml
index 04e5e3f7fcb39618aeb8996b7346c0b542415782..ae4db294d264b4ee8234c9c48769a787954ab193 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -4,6 +4,7 @@ docs_dir: docs-fr
 site_dir: src/assets/docs-fr/
 copyright: CC BY-NC-ND 4.0, UMR G-EAU 2019
 theme: material
+use_directory_urls: false
 extra_javascript:
     - javascripts/mathjax/MathJax.js?config=TeX-AMS_CHTML
 markdown_extensions:
diff --git a/package-lock.json b/package-lock.json
index f828b90e1c150e742489f03fd308c71527d077d9..f0b5b132785ff48e868e92ba193900da45063930 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,12 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "7zip-bin": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/7zip-bin/-/7zip-bin-4.1.0.tgz",
+      "integrity": "sha512-AsnBZN3a8/JcNt+KPkGGODaA4c7l3W5+WpeKgGSbstSLxqWtTXqd1ieJGBQ8IFCtRg8DmmKUcSkIkUc0A4p3YA==",
+      "dev": true
+    },
     "@angular-devkit/architect": {
       "version": "0.13.8",
       "resolved": "https://registry.npmjs.org/@angular-devkit/architect/-/architect-0.13.8.tgz",
@@ -1919,6 +1925,48 @@
         "chart.js": "^2.3.0"
       }
     },
+    "ansi-align": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-align/-/ansi-align-2.0.0.tgz",
+      "integrity": "sha1-w2rsy6VjuJzrVW82kPCx2eNUf38=",
+      "dev": true,
+      "requires": {
+        "string-width": "^2.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        }
+      }
+    },
     "ansi-colors": {
       "version": "3.2.3",
       "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.3.tgz",
@@ -2009,6 +2057,73 @@
       "integrity": "sha1-7klza2ObTxCLbp5ibG2pkwa0FpI=",
       "dev": true
     },
+    "app-builder-bin": {
+      "version": "2.6.6",
+      "resolved": "https://registry.npmjs.org/app-builder-bin/-/app-builder-bin-2.6.6.tgz",
+      "integrity": "sha512-G0Ee6xkbxV+fvM/7xXWIgSDjWAD4E/d/aNbxerq/TVsCyBIau/0VPmrEqBMyZv0NbTwLDW5aF/yHG+0ZEY77kA==",
+      "dev": true
+    },
+    "app-builder-lib": {
+      "version": "20.40.2",
+      "resolved": "https://registry.npmjs.org/app-builder-lib/-/app-builder-lib-20.40.2.tgz",
+      "integrity": "sha512-SAbfua8+L3pFbQp3QFpKV0PzHJPJqepROeX/FPrfdL02zxlw+BVOe6KfC3+UV6XUombWvVPG+SwG956vfIx/Cw==",
+      "dev": true,
+      "requires": {
+        "7zip-bin": "~4.1.0",
+        "app-builder-bin": "2.6.6",
+        "async-exit-hook": "^2.0.1",
+        "bluebird-lst": "^1.0.7",
+        "builder-util": "9.7.1",
+        "builder-util-runtime": "8.2.1",
+        "chromium-pickle-js": "^0.2.0",
+        "debug": "^4.1.1",
+        "ejs": "^2.6.1",
+        "electron-osx-sign": "0.4.11",
+        "electron-publish": "20.40.0",
+        "fs-extra-p": "^7.0.1",
+        "hosted-git-info": "^2.7.1",
+        "is-ci": "^2.0.0",
+        "isbinaryfile": "^4.0.0",
+        "js-yaml": "^3.13.0",
+        "lazy-val": "^1.0.4",
+        "minimatch": "^3.0.4",
+        "normalize-package-data": "^2.5.0",
+        "plist": "^3.0.1",
+        "read-config-file": "3.2.2",
+        "sanitize-filename": "^1.6.1",
+        "semver": "^6.0.0",
+        "temp-file": "^3.3.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "isbinaryfile": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/isbinaryfile/-/isbinaryfile-4.0.0.tgz",
+          "integrity": "sha512-RBtmso6l2mCaEsUvXngMTIjg3oheXo0MgYzzfT6sk44RYggPnm9fT+cQJAmzRnJIxPHXg9FZglqDJGW28dvcqA==",
+          "dev": true
+        },
+        "ms": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "dev": true
+        },
+        "semver": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.0.0.tgz",
+          "integrity": "sha512-0UewU+9rFapKFnlbirLi3byoOuhrSsli/z/ihNnvM24vgF+8sNBiI1LZPBSH9wJKUwaUbw+s3hToDLCXkrghrQ==",
+          "dev": true
+        }
+      }
+    },
     "app-root-path": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/app-root-path/-/app-root-path-2.1.0.tgz",
@@ -2078,8 +2193,7 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.2.tgz",
       "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "array-flatten": {
       "version": "2.1.2",
@@ -2262,6 +2376,12 @@
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
       "dev": true
     },
+    "async-exit-hook": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/async-exit-hook/-/async-exit-hook-2.0.1.tgz",
+      "integrity": "sha512-NW2cX8m1Q7KPA7a5M2ULQeZ2wR5qI5PAbw5L0UOMxdioVk9PMZ0h1TmyZEkPYrCvYjDlFICusOu1dlEKAAeXBw==",
+      "dev": true
+    },
     "async-foreach": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/async-foreach/-/async-foreach-0.1.3.tgz",
@@ -2636,6 +2756,23 @@
       "integrity": "sha512-/qKPUQlaW1OyR51WeCPBvRnAlnZFUJkCSG5HzGnuIqhgyJtF+T94lFnn33eiazjRm2LAHVy2guNnaq48X9SJuw==",
       "dev": true
     },
+    "bluebird-lst": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/bluebird-lst/-/bluebird-lst-1.0.8.tgz",
+      "integrity": "sha512-InUDOaBaIjIobOa3O4YRAbFgff907uTJZXW0m0rhk3zhVZ4GvsmdCLEAKC1CTWTtUWCM8iWTTfFX9N/xQR/etw==",
+      "dev": true,
+      "requires": {
+        "bluebird": "^3.5.4"
+      },
+      "dependencies": {
+        "bluebird": {
+          "version": "3.5.4",
+          "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.4.tgz",
+          "integrity": "sha512-FG+nFEZChJrbQ9tIccIfZJBz3J7mLrAhxakAbnrJWn8d7aKOC+LWifa0G+p4ZqKp4y13T7juYvdhq9NzKdsrjw==",
+          "dev": true
+        }
+      }
+    },
     "bn.js": {
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
@@ -2680,6 +2817,60 @@
       "integrity": "sha1-aN/1++YMUes3cl6p4+0xDcwed24=",
       "dev": true
     },
+    "boxen": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/boxen/-/boxen-1.3.0.tgz",
+      "integrity": "sha512-TNPjfTr432qx7yOjQyaXm3dSR0MH9vXp7eT1BFSl/C51g+EFnOR9hTg1IreahGBmDNCehscshe45f+C1TBZbLw==",
+      "dev": true,
+      "requires": {
+        "ansi-align": "^2.0.0",
+        "camelcase": "^4.0.0",
+        "chalk": "^2.0.1",
+        "cli-boxes": "^1.0.0",
+        "string-width": "^2.0.0",
+        "term-size": "^1.2.0",
+        "widest-line": "^2.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "camelcase": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        }
+      }
+    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -2914,6 +3105,94 @@
       "integrity": "sha1-JuYe0UIvtw3ULm42cp7VHYVf6Nk=",
       "dev": true
     },
+    "builder-util": {
+      "version": "9.7.1",
+      "resolved": "https://registry.npmjs.org/builder-util/-/builder-util-9.7.1.tgz",
+      "integrity": "sha512-txpzYIeuHFjrOQWPTJDvhJYisIVGJdSG9ppccE+y7agT0YNhBlVHGnd8+HgFTajYE34xzB5zf1/zxiiDqSKSpA==",
+      "dev": true,
+      "requires": {
+        "7zip-bin": "~4.1.0",
+        "app-builder-bin": "2.6.6",
+        "bluebird-lst": "^1.0.7",
+        "builder-util-runtime": "^8.2.1",
+        "chalk": "^2.4.2",
+        "debug": "^4.1.1",
+        "fs-extra-p": "^7.0.1",
+        "is-ci": "^2.0.0",
+        "js-yaml": "^3.13.0",
+        "source-map-support": "^0.5.11",
+        "stat-mode": "^0.3.0",
+        "temp-file": "^3.3.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "dev": true
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "source-map-support": {
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+    "stat-mode": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/stat-mode/-/stat-mode-0.3.0.tgz",
+      "integrity": "sha512-QjMLR0A3WwFY2aZdV0okfFEJB5TRjkggXZjxP3A1RsWsNHNu3YPv8btmtc6iCFZ0Rul3FE93OYogvhOUClU+ng==",
+      "dev": true
+    },
     "static-eval": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/static-eval/-/static-eval-2.0.2.tgz",
@@ -11567,7 +12716,6 @@
       "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-2.0.0.tgz",
       "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
       "dev": true,
-      "optional": true,
       "requires": {
         "is-utf8": "^0.2.0"
       }
@@ -11583,11 +12731,16 @@
       "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-1.0.1.tgz",
       "integrity": "sha1-DHlipq3vp7vUrDZkYKY4VSrhoKI=",
       "dev": true,
-      "optional": true,
       "requires": {
         "get-stdin": "^4.0.1"
       }
     },
+    "strip-json-comments": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
+      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
+      "dev": true
+    },
     "style-loader": {
       "version": "0.23.1",
       "resolved": "https://registry.npmjs.org/style-loader/-/style-loader-0.23.1.tgz",
@@ -11648,6 +12801,15 @@
         "when": "~3.6.x"
       }
     },
+    "sumchecker": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/sumchecker/-/sumchecker-2.0.2.tgz",
+      "integrity": "sha1-D0LBDl0F2l1C7qPlbDOZo31sWz4=",
+      "dev": true,
+      "requires": {
+        "debug": "^2.2.0"
+      }
+    },
     "supports-color": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
@@ -11681,6 +12843,54 @@
         "inherits": "2"
       }
     },
+    "temp-file": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/temp-file/-/temp-file-3.3.2.tgz",
+      "integrity": "sha512-FGKccAW0Mux9hC/2bdUIe4bJRv4OyVo4RpVcuplFird1V/YoplIFbnPZjfzbJSf/qNvRZIRB9/4n/RkI0GziuQ==",
+      "dev": true,
+      "requires": {
+        "async-exit-hook": "^2.0.1",
+        "bluebird-lst": "^1.0.6",
+        "fs-extra-p": "^7.0.0"
+      }
+    },
+    "term-size": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/term-size/-/term-size-1.2.0.tgz",
+      "integrity": "sha1-RYuDiH8oj8Vtb/+/rSYuJmOO+mk=",
+      "dev": true,
+      "requires": {
+        "execa": "^0.7.0"
+      },
+      "dependencies": {
+        "cross-spawn": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-5.1.0.tgz",
+          "integrity": "sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=",
+          "dev": true,
+          "requires": {
+            "lru-cache": "^4.0.1",
+            "shebang-command": "^1.2.0",
+            "which": "^1.2.9"
+          }
+        },
+        "execa": {
+          "version": "0.7.0",
+          "resolved": "https://registry.npmjs.org/execa/-/execa-0.7.0.tgz",
+          "integrity": "sha1-lEvs00zEHuMqY6n68nrVpl/Fl3c=",
+          "dev": true,
+          "requires": {
+            "cross-spawn": "^5.0.1",
+            "get-stream": "^3.0.0",
+            "is-stream": "^1.1.0",
+            "npm-run-path": "^2.0.0",
+            "p-finally": "^1.0.0",
+            "signal-exit": "^3.0.0",
+            "strip-eof": "^1.0.0"
+          }
+        }
+      }
+    },
     "terser": {
       "version": "3.17.0",
       "resolved": "https://registry.npmjs.org/terser/-/terser-3.17.0.tgz",
@@ -11899,6 +13109,12 @@
         }
       }
     },
+    "throttleit": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/throttleit/-/throttleit-0.0.2.tgz",
+      "integrity": "sha1-z+34jmDADdlpe2H90qg0OptoDq8=",
+      "dev": true
+    },
     "through": {
       "version": "2.3.8",
       "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
@@ -11927,6 +13143,12 @@
       "integrity": "sha1-dkpaEa9QVhkhsTPztE5hhofg9cM=",
       "dev": true
     },
+    "timed-out": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/timed-out/-/timed-out-4.0.1.tgz",
+      "integrity": "sha1-8y6srFoXW+ol1/q1Zas+2HQe9W8=",
+      "dev": true
+    },
     "timers-browserify": {
       "version": "2.0.10",
       "resolved": "https://registry.npmjs.org/timers-browserify/-/timers-browserify-2.0.10.tgz",
@@ -12051,8 +13273,7 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-1.0.0.tgz",
       "integrity": "sha1-WIeWa7WCpFA6QetST301ARgVphM=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "trim-right": {
       "version": "1.0.1",
@@ -12070,6 +13291,15 @@
         "glob": "^7.1.2"
       }
     },
+    "truncate-utf8-bytes": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/truncate-utf8-bytes/-/truncate-utf8-bytes-1.0.2.tgz",
+      "integrity": "sha1-QFkjkJWS1W94pYGENLC3hInKXys=",
+      "dev": true,
+      "requires": {
+        "utf8-byte-length": "^1.0.1"
+      }
+    },
     "ts-node": {
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-7.0.1.tgz",
@@ -12374,6 +13604,15 @@
         "imurmurhash": "^0.1.4"
       }
     },
+    "unique-string": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unique-string/-/unique-string-1.0.0.tgz",
+      "integrity": "sha1-nhBXzKhRq7kzmPizOuGHuZyuwRo=",
+      "dev": true,
+      "requires": {
+        "crypto-random-string": "^1.0.0"
+      }
+    },
     "universalify": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
@@ -12432,12 +13671,53 @@
         }
       }
     },
+    "unzip-response": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/unzip-response/-/unzip-response-2.0.1.tgz",
+      "integrity": "sha1-0vD3N9FrBhXnKmk17QQhRXLVb5c=",
+      "dev": true
+    },
     "upath": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/upath/-/upath-1.1.0.tgz",
       "integrity": "sha512-bzpH/oBhoS/QI/YtbkqCg6VEiPYjSZtrHQM6/QnJS6OL9pKUFLqb3aFh4Scvwm45+7iAgiMkLhSbaZxUqmrprw==",
       "dev": true
     },
+    "update-notifier": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/update-notifier/-/update-notifier-2.5.0.tgz",
+      "integrity": "sha512-gwMdhgJHGuj/+wHJJs9e6PcCszpxR1b236igrOkUofGhqJuG+amlIKwApH1IW1WWl7ovZxsX49lMBWLxSdm5Dw==",
+      "dev": true,
+      "requires": {
+        "boxen": "^1.2.1",
+        "chalk": "^2.0.1",
+        "configstore": "^3.0.0",
+        "import-lazy": "^2.1.0",
+        "is-ci": "^1.0.10",
+        "is-installed-globally": "^0.1.0",
+        "is-npm": "^1.0.0",
+        "latest-version": "^3.0.0",
+        "semver-diff": "^2.0.0",
+        "xdg-basedir": "^3.0.0"
+      },
+      "dependencies": {
+        "ci-info": {
+          "version": "1.6.0",
+          "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-1.6.0.tgz",
+          "integrity": "sha512-vsGdkwSCDpWmP80ncATX7iea5DWQemg1UgCW5J8tqjU3lYw4FBYuj89J0CTVomA7BEfvSZd84GmHko+MxFQU2A==",
+          "dev": true
+        },
+        "is-ci": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/is-ci/-/is-ci-1.2.1.tgz",
+          "integrity": "sha512-s6tfsaQaQi3JNciBH6shVqEDvhGut0SUXr31ag8Pd8BBbVVlcGfWhpPmEOoM6RJ5TFhbypvf5yyRw/VXW1IiWg==",
+          "dev": true,
+          "requires": {
+            "ci-info": "^1.5.0"
+          }
+        }
+      }
+    },
     "uri-js": {
       "version": "4.2.2",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
@@ -12481,6 +13761,15 @@
         "requires-port": "^1.0.0"
       }
     },
+    "url-parse-lax": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/url-parse-lax/-/url-parse-lax-1.0.0.tgz",
+      "integrity": "sha1-evjzA2Rem9eaJy56FKxovAYJ2nM=",
+      "dev": true,
+      "requires": {
+        "prepend-http": "^1.0.1"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -12497,6 +13786,12 @@
         "tmp": "0.0.x"
       }
     },
+    "utf8-byte-length": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/utf8-byte-length/-/utf8-byte-length-1.0.4.tgz",
+      "integrity": "sha1-9F8VDExm7uloGGUFq5P8u4rWv2E=",
+      "dev": true
+    },
     "util": {
       "version": "0.11.1",
       "resolved": "https://registry.npmjs.org/util/-/util-0.11.1.tgz",
@@ -13108,6 +14403,48 @@
         "string-width": "^1.0.2 || 2"
       }
     },
+    "widest-line": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-2.0.1.tgz",
+      "integrity": "sha512-Ba5m9/Fa4Xt9eb2ELXt77JxVDV8w7qQrH0zS/TWSJdLyAwQjWoOzpzj5lwVftDz6n/EOu3tNACS84v509qwnJA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^2.1.1"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        }
+      }
+    },
     "windows-release": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/windows-release/-/windows-release-3.1.0.tgz",
@@ -13148,6 +14485,17 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
+    "write-file-atomic": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.2.tgz",
+      "integrity": "sha512-s0b6vB3xIVRLWywa6X9TOMA7k9zio0TMOsl9ZnDkliA/cfJlpHXAscj0gbHVJiTdIuAYpIyqS5GW91fqm6gG5g==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.11",
+        "imurmurhash": "^0.1.4",
+        "signal-exit": "^3.0.2"
+      }
+    },
     "ws": {
       "version": "3.3.3",
       "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
@@ -13159,6 +14507,12 @@
         "ultron": "~1.1.0"
       }
     },
+    "xdg-basedir": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz",
+      "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ=",
+      "dev": true
+    },
     "xlsx": {
       "version": "0.14.1",
       "resolved": "https://registry.npmjs.org/xlsx/-/xlsx-0.14.1.tgz",
@@ -13197,6 +14551,12 @@
       "integrity": "sha1-Ey7mPS7FVlxVfiD0wi35rKaGsQ0=",
       "dev": true
     },
+    "xmldom": {
+      "version": "0.1.27",
+      "resolved": "https://registry.npmjs.org/xmldom/-/xmldom-0.1.27.tgz",
+      "integrity": "sha1-1QH5ezvbQDr4757MIFcxh6rawOk=",
+      "dev": true
+    },
     "xmlhttprequest-ssl": {
       "version": "1.5.5",
       "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz",
@@ -13284,6 +14644,15 @@
         }
       }
     },
+    "yauzl": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.4.1.tgz",
+      "integrity": "sha1-lSj0QtqxsihOWLQ3m7GU4i4MQAU=",
+      "dev": true,
+      "requires": {
+        "fd-slicer": "~1.0.1"
+      }
+    },
     "yeast": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
diff --git a/package.json b/package.json
index 3a0cdd9e4d90f110a89dca961b8f43d6fcbfabb0..0c1d5e3f461d4ae65a230c3ed70b159b9d584fe5 100644
--- a/package.json
+++ b/package.json
@@ -1,20 +1,28 @@
 {
-  "name": "nghyd",
+  "name": "cassiopee",
+  "description": "Hydraulic calculators",
+  "author": "Irstea",
   "version": "4.1.0",
+  "main": "main.js",
+  "homepage": "http://cassiopee.g-eau.net",
   "license": "MIT",
   "scripts": {
     "ng": "ng",
-    "start": "npm run preprocess; ng serve --host 0.0.0.0",
-    "prod": "npm run preprocess; ng serve --host 0.0.0.0 --prod",
-    "build": "npm run preprocess; ng build --prod --build-optimizer=false",
-    "test": "ng test",
+    "start": "npm run preprocess && ng serve --host 0.0.0.0",
+    "prod": "npm run preprocess && ng serve --host 0.0.0.0 --prod",
+    "build": "npm run preprocess && ng build --prod --build-optimizer=false",
+    "electron": "electron .",
+    "electron-builder": "electron-builder",
+    "release-clean": "rm -r release/*",
+    "release-linux": "npm run release-clean & npm run build && electron-builder",
+    "release-windows": "rd /s /q release & ng build --prod --build-optimizer=false && npm run electron-builder",
     "lint": "ng lint",
     "e2e": "ng e2e",
     "e2equick": "ng e2e --dev-server-target= --baseUrl=http://localhost:4200",
-    "jalhyd": "rm node_modules/jalhyd; cd ../jalhyd; npm run build; cd ../nghyd; npm install ../jalhyd;",
-    "mathjax": "rsync -az --delete node_modules/mathjax docs-fr/javascripts;",
-    "mkdocs": "npm run mathjax; find docs-fr/javascripts/ -name '*.md' -type f -delete; python3 -m mkdocs build",
-    "preprocess": "node preprocessors.js; npm run mkdocs;",
+    "jalhyd": "rm node_modules/jalhyd && cd ../jalhyd && npm run build && cd ../nghyd && npm install ../jalhyd",
+    "mathjax": "rsync -az --delete `cat rsync-mathjax-files` docs-fr/javascripts/mathjax",
+    "mkdocs": "npm run mathjax && find docs-fr/javascripts/ -name '*.md' -type f -delete && python3 -m mkdocs build",
+    "preprocess": "node preprocessors.js && npm run mkdocs",
     "viz": "tsviz -recursive src/ nghyd_class_diagram.png",
     "compodoc-patch": "sed -i '/Application.prototype.detectAngularJSProjects = function () {/a return false; // patch cracra, voir https://github.com/compodoc/compodoc/issues/667' node_modules/@compodoc/compodoc/dist/index-cli.js",
     "compodoc": "nodejs node_modules/@compodoc/compodoc/bin/index-cli.js -p src/tsconfig.app.json -s --language fr-FR -d compodoc-fr"
@@ -66,6 +74,8 @@
     "@types/jasminewd2": "^2.0.6",
     "@types/node": "^8.10.42",
     "codelyzer": "^4.5.0",
+    "electron": "^5.0.1",
+    "electron-builder": "^20.40.2",
     "jasmine-core": "~3.3.0",
     "jasmine-spec-reporter": "~4.2.1",
     "karma": "^3.1.4",
diff --git a/rsync-mathjax-files b/rsync-mathjax-files
new file mode 100644
index 0000000000000000000000000000000000000000..6389b3765d57aaafacb85316c65bf7b5d28da216
--- /dev/null
+++ b/rsync-mathjax-files
@@ -0,0 +1,3 @@
+node_modules/mathjax/MathJax.js
+node_modules/mathjax/config
+node_modules/mathjax/jax
\ No newline at end of file
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index c4ebf521a2e0dde99280d09f2ca496b2bda6bbb4..cf38a7c63c4c1ed2c88e78b66a39f8533855b5d4 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -124,12 +124,6 @@ export class AppComponent implements OnInit, OnDestroy, Observer {
         this.showLoading(false);
       }
     });
-
-    // icônes personnalisées
-    this.matIconRegistry.addSvgIcon(
-      "file_excel",
-      this.domSanitizer.bypassSecurityTrustResourceUrl("../../assets/icons/file-excel.svg")
-    );
   }
 
   /**
diff --git a/src/app/components/fixedvar-results/fixed-results.component.html b/src/app/components/fixedvar-results/fixed-results.component.html
index 1c2c8f0b4e4937432f1b9cd09e453700432123d2..d915732d89f3caeaf124a8445fc29359236e9f7c 100644
--- a/src/app/components/fixedvar-results/fixed-results.component.html
+++ b/src/app/components/fixedvar-results/fixed-results.component.html
@@ -2,7 +2,7 @@
 
     <div class="fixed-results-buttons">
         <button mat-icon-button (click)="exportAsSpreadsheet()">
-            <mat-icon color="primary" svgIcon="file_excel" class="scaled09"></mat-icon>
+            <mat-icon color="primary">file_download</mat-icon>
         </button>
     </div>
 
diff --git a/src/app/components/fixedvar-results/fixed-results.component.scss b/src/app/components/fixedvar-results/fixed-results.component.scss
index 5a8e48d7ad5cf2fc3ee75274b1dbd84f2fe3486f..c2fee955e0e28dc565a72c5308124bd05bc03170 100644
--- a/src/app/components/fixedvar-results/fixed-results.component.scss
+++ b/src/app/components/fixedvar-results/fixed-results.component.scss
@@ -16,12 +16,6 @@
     button {
         margin-left: 3px;
         width: auto;
-
-        mat-icon {
-            &.scaled09 {
-                transform: scale(0.9);
-            }
-        }
     }
 }
 
diff --git a/src/app/components/fixedvar-results/var-results.component.html b/src/app/components/fixedvar-results/var-results.component.html
index 30d0afac88a20a45ad13f6c33b08af49de08ffb2..e7bbd993fc9ca551f693db5de401dc47d5430af8 100644
--- a/src/app/components/fixedvar-results/var-results.component.html
+++ b/src/app/components/fixedvar-results/var-results.component.html
@@ -2,7 +2,7 @@
     <div fxFlex="1 1 100%">
         <div class="var-results-buttons">
             <button mat-icon-button (click)="exportAsSpreadsheet()">
-                <mat-icon color="primary" svgIcon="file_excel" class="scaled09"></mat-icon>
+                <mat-icon color="primary">file_download</mat-icon>
             </button>
             <button mat-icon-button *ngIf="! isFullscreen" (click)="setFullscreen(variableResults)">
                 <mat-icon color="primary" class="scaled12">fullscreen</mat-icon>
diff --git a/src/app/components/fixedvar-results/var-results.component.scss b/src/app/components/fixedvar-results/var-results.component.scss
index aa3f8ec31732183d2e4fdb2e588b2bbf9f19c5b2..12d1148fcf6f0adc02c335a3d2dc0b5b016d03b8 100644
--- a/src/app/components/fixedvar-results/var-results.component.scss
+++ b/src/app/components/fixedvar-results/var-results.component.scss
@@ -21,9 +21,6 @@
             &.scaled12 {
                 transform: scale(1.2)
             }
-            &.scaled09 {
-                transform: scale(0.9);
-            }
         }
     }
 }
diff --git a/src/app/components/generic-calculator/calculator.component.ts b/src/app/components/generic-calculator/calculator.component.ts
index 245b3acaf552edbbd26b73187ae5fab341efbe5a..67b856e1f70cc84e07f725a449ba3d7a440b6ed5 100644
--- a/src/app/components/generic-calculator/calculator.component.ts
+++ b/src/app/components/generic-calculator/calculator.component.ts
@@ -412,7 +412,7 @@ export class GenericCalculatorComponent extends BaseComponent implements OnInit,
     }
 
     public openHelp() {
-        window.open("assets/docs-fr/calculators/" + this._formulaire.helpLink + "/", "_blank");
+        window.open("assets/docs-fr/calculators/" + this._formulaire.helpLink + ".html", "_blank");
     }
 
     /**
diff --git a/src/app/components/pab-results/pab-results-table.component.html b/src/app/components/pab-results/pab-results-table.component.html
index bbdbf38db19c4d49f8db6fc3bda65506a3ea01af..4a86d0a987436e5a49b4ae273a74ba8de11c90fa 100644
--- a/src/app/components/pab-results/pab-results-table.component.html
+++ b/src/app/components/pab-results/pab-results-table.component.html
@@ -3,7 +3,7 @@
     <div fxFlex="1 1 100%">
         <div class="pab-results-table-buttons">
             <button mat-icon-button (click)="exportAsSpreadsheet()">
-                <mat-icon color="primary" svgIcon="file_excel" class="scaled09"></mat-icon>
+                <mat-icon color="primary">file_download</mat-icon>
             </button>
             <button mat-icon-button *ngIf="! isFullscreen" (click)="setFullscreen(pabResultsTable)">
                 <mat-icon color="primary" class="scaled12">fullscreen</mat-icon>
diff --git a/src/app/components/pab-results/pab-results-table.component.scss b/src/app/components/pab-results/pab-results-table.component.scss
index 780da209df9aac15415d2845eb749efab2969bef..7e227e04eb8446b28b1a55995311e77330982856 100644
--- a/src/app/components/pab-results/pab-results-table.component.scss
+++ b/src/app/components/pab-results/pab-results-table.component.scss
@@ -21,9 +21,6 @@
             &.scaled12 {
                 transform: scale(1.2)
             }
-            &.scaled09 {
-                transform: scale(0.9);
-            }
         }
     }
 }
diff --git a/src/assets/icons/file-excel-box.svg b/src/assets/icons/file-excel-box.svg
deleted file mode 100644
index f0be5069bf8d7c2cf0b39456b0c5ee8dccb5c525..0000000000000000000000000000000000000000
--- a/src/assets/icons/file-excel-box.svg
+++ /dev/null
@@ -1 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" viewBox="0 0 24 24"><path d="M16.2,17H14.2L12,13.2L9.8,17H7.8L11,12L7.8,7H9.8L12,10.8L14.2,7H16.2L13,12M19,3H5C3.89,3 3,3.89 3,5V19A2,2 0 0,0 5,21H19A2,2 0 0,0 21,19V5C21,3.89 20.1,3 19,3Z" /></svg>
\ No newline at end of file
diff --git a/src/assets/icons/file-excel.svg b/src/assets/icons/file-excel.svg
deleted file mode 100644
index 77acecd831d1b6a18f1b6c8c8d2f7b473b3a6106..0000000000000000000000000000000000000000
--- a/src/assets/icons/file-excel.svg
+++ /dev/null
@@ -1 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" viewBox="0 0 24 24"><path d="M6,2H14L20,8V20A2,2 0 0,1 18,22H6A2,2 0 0,1 4,20V4A2,2 0 0,1 6,2M13,3.5V9H18.5L13,3.5M17,11H13V13H14L12,14.67L10,13H11V11H7V13H8L11,15.5L8,18H7V20H11V18H10L12,16.33L14,18H13V20H17V18H16L13,15.5L16,13H17V11Z" /></svg>
\ No newline at end of file
diff --git a/src/icon.png b/src/icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..dcee9288fb8d0d2a66ea0a2f1d44047d2d227a49
Binary files /dev/null and b/src/icon.png differ
diff --git a/src/index.html b/src/index.html
index c087297731d851ba47adf05a9193e221a14f0027..d0cfac235296d6710cfcc21a7553284552ccd812 100644
--- a/src/index.html
+++ b/src/index.html
@@ -2,7 +2,7 @@
 <html lang="en">
 
 <head>
-  <base href="/">
+  <base href="">
   <meta charset="utf-8">
   <title>ngHyd - Calculettes hydrauliques</title>
 
diff --git a/src/locale/messages.en.json b/src/locale/messages.en.json
index 32364c09832fef08f3c9054093616ecdb6886227..1392829d879fde9b0fde40256e036ef314b97b9e 100644
--- a/src/locale/messages.en.json
+++ b/src/locale/messages.en.json
@@ -275,7 +275,7 @@
     "INFO_THEME_PASSE_A_BASSIN_TITRE": "Fish ladder",
     "INFO_THEME_PASSE_NATURELLE_DESCRIPTION": "Tools for sizing a natural fish pass also called macroroughness pass or rock-ramp fish pass",
     "INFO_THEME_PASSE_NATURELLE_TITRE": "Natural pass",
-    "INFO_WELCOME_CONTENT": "<p>The Cassiopée software was developed by <a href=\"https://www.afbiodiversite.fr\" target=\"_blank\">AFB</a> (French Agency for Biodiversity) and <a href=\"http://g-eau.fr/index.php/en/\" target=\"_blank\">UMR G-EAU</a> (Joint Research Unit \"Water Management, Actors, Territories\").</p><p>It includes tools for designing fish passes, and hydraulic calculation tools useful for environmental and agricultural engineering.</p><p>For more information, consult <a href=\"assets/docs-fr/mentions_legales/\" target=\"_blank\">legal notice</a> and <a href=\"assets/docs-fr/\" target=\"_blank\">documentation</a>.</p>",
+    "INFO_WELCOME_CONTENT": "<p>The Cassiopée software was developed by <a href=\"https://www.afbiodiversite.fr\" target=\"_blank\">AFB</a> (French Agency for Biodiversity) and <a href=\"http://g-eau.fr/index.php/en/\" target=\"_blank\">UMR G-EAU</a> (Joint Research Unit \"Water Management, Actors, Territories\").</p><p>It includes tools for designing fish passes, and hydraulic calculation tools useful for environmental and agricultural engineering.</p><p>For more information, consult <a href=\"assets/docs-fr/mentions_legales.html\" target=\"_blank\">legal notice</a> and <a href=\"assets/docs-fr/index.html\" target=\"_blank\">documentation</a>.</p>",
     "INFO_WELCOME_SUBTITLE": "Hydraulic calculators",
     "WARNING_REMOUS_ARRET_CRITIQUE": "Calculation stopped: critical elevation reached at abscissa %x%",
     "WARNING_STRUCTUREKIVI_HP_TROP_ELEVE": "h/p must not be greater than 2.5. h/p is forced to 2.5",
diff --git a/src/locale/messages.fr.json b/src/locale/messages.fr.json
index 7228186b3420c17e0e4e7633247c1623fca744fb..16cdbe471511ef08abc998ec52456f7105fcecdd 100644
--- a/src/locale/messages.fr.json
+++ b/src/locale/messages.fr.json
@@ -275,7 +275,7 @@
     "INFO_THEME_PASSE_A_BASSIN_TITRE": "Passe à bassins",
     "INFO_THEME_PASSE_NATURELLE_DESCRIPTION": "Outils de dimensionnement d'une passe à poissons de type passe naturelle ou encore appelée passe à macro-rugosités",
     "INFO_THEME_PASSE_NATURELLE_TITRE": "Passe naturelle",
-    "INFO_WELCOME_CONTENT": "<p>Le logiciel Cassiopée a été développé par l'<a href=\"https://www.afbiodiversite.fr\" target=\"_blank\">AFB</a> (Agence Française pour la Biodiversité) et <a href=\"http://g-eau.fr\" target=\"_blank\">L'UMR G-EAU</a> (UMR Gestion de l'Eau, Acteurs, Usages).</p><p>Il regroupe des outils d'aide à la conception de passes à poissons et des outils de calcul hydraulique utiles pour l'ingénierie en environnement et agriculture.</p><p>Pour plus d'informations, consulter les <a href=\"assets/docs-fr/mentions_legales/\" target=\"_blank\">mentions légales</a> et la <a href=\"assets/docs-fr/\" target=\"_blank\">documentation</a>.</p>",
+    "INFO_WELCOME_CONTENT": "<p>Le logiciel Cassiopée a été développé par l'<a href=\"https://www.afbiodiversite.fr\" target=\"_blank\">AFB</a> (Agence Française pour la Biodiversité) et <a href=\"http://g-eau.fr\" target=\"_blank\">L'UMR G-EAU</a> (UMR Gestion de l'Eau, Acteurs, Usages).</p><p>Il regroupe des outils d'aide à la conception de passes à poissons et des outils de calcul hydraulique utiles pour l'ingénierie en environnement et agriculture.</p><p>Pour plus d'informations, consulter les <a href=\"assets/docs-fr/mentions_legales.html\" target=\"_blank\">mentions légales</a> et la <a href=\"assets/docs-fr/index.html\" target=\"_blank\">documentation</a>.</p>",
     "INFO_WELCOME_SUBTITLE": "Modules de calcul d'hydraulique",
     "WARNING_REMOUS_ARRET_CRITIQUE": "Arrêt du calcul&nbsp;: hauteur critique atteinte à l'abscisse %x%",
     "WARNING_STRUCTUREKIVI_HP_TROP_ELEVE": "h/p ne doit pas être supérieur à 2,5. h/p est forcé à 2,5",