diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7c4ec0f513d307fb847f85673be92726648e3ade..32ef86b1c8a523305cfdf71fc8231e827e7220e0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 ---
-  image: node:12
+  image: node:14
   
   stages:
     - release
diff --git a/package-lock.json b/package-lock.json
index 11775dc41f0bf4527e7c8a95040f57a09a9fd0b2..167baab70aed7bb74319f0f35cd2fd78bb137756 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -402,6 +402,11 @@
         }
       }
     },
+    "buffer-from": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A=="
+    },
     "cache-base": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/cache-base/-/cache-base-1.0.1.tgz",
@@ -427,6 +432,15 @@
         "get-intrinsic": "^1.0.2"
       }
     },
+    "camel-case": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/camel-case/-/camel-case-4.1.2.tgz",
+      "integrity": "sha512-gxGWBrTT1JuMx6R+o5PTXMmUnhnVzLQ9SNutD4YqKtI6ap897t3tKECYla6gCWEkplXnlNybEkZg9GEGxKFCgw==",
+      "requires": {
+        "pascal-case": "^3.1.2",
+        "tslib": "^2.0.3"
+      }
+    },
     "camelcase": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
@@ -482,6 +496,21 @@
         }
       }
     },
+    "clean-css": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.0.1.tgz",
+      "integrity": "sha512-F1zAGOowUCg8yxT0O4UR+nmbMauf3YwbiUS60CPxpzJU7ulpamGzQomFrJSK4w/HqHtMmQKSHJUNue+dQQYQdg==",
+      "requires": {
+        "source-map": "~0.6.0"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+        }
+      }
+    },
     "cliui": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/cliui/-/cliui-6.0.0.tgz",
@@ -567,6 +596,11 @@
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
     },
+    "css-b64-images": {
+      "version": "0.2.5",
+      "resolved": "https://registry.npmjs.org/css-b64-images/-/css-b64-images-0.2.5.tgz",
+      "integrity": "sha1-QgBdgyBLK0pdk7axpWRBM7WSegI="
+    },
     "debug": {
       "version": "4.3.1",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
@@ -637,6 +671,15 @@
         }
       }
     },
+    "dot-case": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/dot-case/-/dot-case-3.0.4.tgz",
+      "integrity": "sha512-Kv5nKlh6yRrdrGvxeJ2e5y2eRUpkUosIW4A2AS38zwSz27zu7ufDwQPi5Jhs3XAlGNetl3bmnGhQsMtkKJnj3w==",
+      "requires": {
+        "no-case": "^3.0.4",
+        "tslib": "^2.0.3"
+      }
+    },
     "emoji-regex": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
@@ -1056,11 +1099,62 @@
         }
       }
     },
+    "he": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/he/-/he-1.2.0.tgz",
+      "integrity": "sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw=="
+    },
     "hosted-git-info": {
       "version": "2.8.8",
       "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.8.8.tgz",
       "integrity": "sha512-f/wzC2QaWBs7t9IYqB4T3sR1xviIViXJRJTWBlx2Gf3g0Xi5vI7Yy4koXQ1c9OYDGHN9sBy1DQ2AB8fqZBWhUg=="
     },
+    "html-minifier-terser": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/html-minifier-terser/-/html-minifier-terser-5.1.1.tgz",
+      "integrity": "sha512-ZPr5MNObqnV/T9akshPKbVgyOqLmy+Bxo7juKCfTfnjNniTAMdy4hz21YQqoofMBJD2kdREaqPPdThoR78Tgxg==",
+      "requires": {
+        "camel-case": "^4.1.1",
+        "clean-css": "^4.2.3",
+        "commander": "^4.1.1",
+        "he": "^1.2.0",
+        "param-case": "^3.0.3",
+        "relateurl": "^0.2.7",
+        "terser": "^4.6.3"
+      },
+      "dependencies": {
+        "clean-css": {
+          "version": "4.2.3",
+          "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.3.tgz",
+          "integrity": "sha512-VcMWDN54ZN/DS+g58HYL5/n4Zrqe8vHJpGA8KdgUXFU4fuP/aHNw8eld9SyEIyabIMJX/0RaY/fplOo5hYLSFA==",
+          "requires": {
+            "source-map": "~0.6.0"
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+        },
+        "terser": {
+          "version": "4.8.0",
+          "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.0.tgz",
+          "integrity": "sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==",
+          "requires": {
+            "commander": "^2.20.0",
+            "source-map": "~0.6.1",
+            "source-map-support": "~0.5.12"
+          },
+          "dependencies": {
+            "commander": {
+              "version": "2.20.3",
+              "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+              "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
+            }
+          }
+        }
+      }
+    },
     "inflight": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
@@ -1283,6 +1377,14 @@
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
       "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
     },
+    "lower-case": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/lower-case/-/lower-case-2.0.2.tgz",
+      "integrity": "sha512-7fm3l3NAF9WfN6W3JOmf5drwpVqX78JtoGJ3A6W0a6ZnldM41w2fV5D490psKFTpMds8TJse/eHLFFsNHHjHgg==",
+      "requires": {
+        "tslib": "^2.0.3"
+      }
+    },
     "lru-cache": {
       "version": "2.7.3",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
@@ -1336,6 +1438,19 @@
         "to-regex": "^3.0.2"
       }
     },
+    "minify": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/minify/-/minify-7.0.0.tgz",
+      "integrity": "sha512-vgavF0qIto4WV4xpuaEx6Uo5hWyOh1rr/THg3v3AIwBc86b7ahLOdv5OCnRerQ75kObqo49/1J2CFSv7/fEL1g==",
+      "requires": {
+        "clean-css": "^5.0.1",
+        "css-b64-images": "~0.2.5",
+        "debug": "^4.1.0",
+        "html-minifier-terser": "^5.1.1",
+        "terser": "^5.3.2",
+        "try-to-catch": "^3.0.0"
+      }
+    },
     "minimatch": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
@@ -1402,6 +1517,15 @@
       "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
       "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ=="
     },
+    "no-case": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/no-case/-/no-case-3.0.4.tgz",
+      "integrity": "sha512-fgAN3jGAh+RoxUGZHTSOLJIqUc2wmoBwGR4tbpNAKmmovFoWq0OdRkb0VkldReO2a2iBT/OEulG9XSUc10r3zg==",
+      "requires": {
+        "lower-case": "^2.0.2",
+        "tslib": "^2.0.3"
+      }
+    },
     "noms": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/noms/-/noms-0.0.0.tgz",
@@ -1622,6 +1746,24 @@
       "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
       "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ=="
     },
+    "param-case": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/param-case/-/param-case-3.0.4.tgz",
+      "integrity": "sha512-RXlj7zCYokReqWpOPH9oYivUzLYZ5vAPIfEmCTNViosC78F8F0H9y7T7gG2M39ymgutxF5gcFEsyZQSph9Bp3A==",
+      "requires": {
+        "dot-case": "^3.0.4",
+        "tslib": "^2.0.3"
+      }
+    },
+    "pascal-case": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/pascal-case/-/pascal-case-3.1.2.tgz",
+      "integrity": "sha512-uWlGT3YSnK9x3BQJaOdcZwrnV6hPpd8jFH1/ucpiLRPh/2zCVJKS19E4GvYHvaCcACn3foXZ0cLB9Wrx1KGe5g==",
+      "requires": {
+        "no-case": "^3.0.4",
+        "tslib": "^2.0.3"
+      }
+    },
     "pascalcase": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/pascalcase/-/pascalcase-0.1.1.tgz",
@@ -1705,6 +1847,11 @@
         "safe-regex": "^1.1.0"
       }
     },
+    "relateurl": {
+      "version": "0.2.7",
+      "resolved": "https://registry.npmjs.org/relateurl/-/relateurl-0.2.7.tgz",
+      "integrity": "sha1-VNvzd+UUQKypCkzSdGANP/LYiKk="
+    },
     "remove-trailing-separator": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
@@ -1951,6 +2098,22 @@
         "urix": "^0.1.0"
       }
     },
+    "source-map-support": {
+      "version": "0.5.19",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.19.tgz",
+      "integrity": "sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==",
+      "requires": {
+        "buffer-from": "^1.0.0",
+        "source-map": "^0.6.0"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+        }
+      }
+    },
     "source-map-url": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/source-map-url/-/source-map-url-0.4.0.tgz",
@@ -2072,6 +2235,28 @@
         "has-flag": "^3.0.0"
       }
     },
+    "terser": {
+      "version": "5.5.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-5.5.1.tgz",
+      "integrity": "sha512-6VGWZNVP2KTUcltUQJ25TtNjx/XgdDsBDKGt8nN0MpydU36LmbPPcMBd2kmtZNNGVVDLg44k7GKeHHj+4zPIBQ==",
+      "requires": {
+        "commander": "^2.20.0",
+        "source-map": "~0.7.2",
+        "source-map-support": "~0.5.19"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "2.20.3",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+          "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
+        },
+        "source-map": {
+          "version": "0.7.3",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.3.tgz",
+          "integrity": "sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ=="
+        }
+      }
+    },
     "through2": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
@@ -2124,6 +2309,16 @@
         "repeat-string": "^1.6.1"
       }
     },
+    "try-to-catch": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/try-to-catch/-/try-to-catch-3.0.0.tgz",
+      "integrity": "sha512-eIm6ZXwR35jVF8By/HdbbkcaCDTBI5PpCPkejRKrYp0jyf/DbCCcRhHD7/O9jtFI3ewsqo9WctFEiJTS6i+CQA=="
+    },
+    "tslib": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.1.0.tgz",
+      "integrity": "sha512-hcVC3wYEziELGGmEEXue7D75zbwIIVUMWAVbHItGPx0ziyXxrOMQx4rQEVEV45Ut/1IotuEvwqPopzIOkDMf0A=="
+    },
     "union-value": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
diff --git a/package.json b/package.json
index 9c9626beae62e137d1525eac7e3657ac3a779c21..ffcfe872cb6692bc43b818949d898fdd21face4e 100644
--- a/package.json
+++ b/package.json
@@ -51,6 +51,7 @@
     "@babel/core": "^7.10.2",
     "babel-plugin-transform-commonjs": "^1.1.6",
     "copyfiles": "^2.3.0",
+    "minify": "^7.0.0",
     "npm-run-all": "^4.1.5",
     "sass": "^1.32.5"
   },
@@ -58,15 +59,16 @@
     "watch-cli": "^0.2.3"
   },
   "scripts": {
-    "build": "run-p copy:* build:*",
+    "build": "run-p copy:* && run-p build:*",
     "build:css": "node build-scss.js",
+    "build:conversejs": "minify src/conversejs/converse.js > dist/conversejs/converse.min.js",
     "build:js": "babel \"src/*.js\" --out-dir dist/",
     "build:plugins": "babel \"src/plugins/*.js\" --out-dir dist/plugins/",
     "copy:image": "copyfiles -u 2 src/assets/* dist/assets && copyfiles -u 2 src/assets/**/* dist/assets",
     "copy:conversejs": "copyfiles -u 2 src/conversejs/* dist/conversejs && copyfiles -u 2 src/conversejs/**/**/* dist/conversejs && copyfiles -u 2 src/conversejs/**/* dist/conversejs",
     "watch": "run-p copy:* watch:*",
     "watch:css": "npm run build:css && npm run build:css -- -w",
-    "watch:conversejs": "watch -p src/conversejs/converse.js -c 'npm run copy:conversejs'",
+    "watch:conversejs": "watch -p src/conversejs/converse.js -c 'npm run build:conversejs'",
     "watch:js": "babel --watch \"src/*.js\" --out-dir dist/",
     "watch:plugins": "babel --watch \"src/plugins/*.js\" --out-dir dist/plugins/"
   }