diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
   "license": "AGPL-3.0-or-later",
   "dependencies": {
     "@babel/runtime-corejs3": "^7.7.6",
+    "@sentry/browser": "^5.10.2",
     "admin-lte": "^3.0.1",
     "ansi_up": "^4.0.4",
     "bootstrap": "^4.4.1",
diff --git a/swh/web/assets/src/bundles/vendors/index.js b/swh/web/assets/src/bundles/vendors/index.js
--- a/swh/web/assets/src/bundles/vendors/index.js
+++ b/swh/web/assets/src/bundles/vendors/index.js
@@ -43,3 +43,6 @@
 import 'typeface-alegreya-sans';
 import 'font-awesome/css/font-awesome.css';
 import './octicons.css';
+
+// Monitoring
+import '@sentry/browser';
diff --git a/swh/web/assets/src/bundles/webapp/index.js b/swh/web/assets/src/bundles/webapp/index.js
--- a/swh/web/assets/src/bundles/webapp/index.js
+++ b/swh/web/assets/src/bundles/webapp/index.js
@@ -25,3 +25,4 @@
 export * from './xss-filtering';
 export * from './history-counters';
 export * from './badges';
+export * from './sentry';
diff --git a/swh/web/assets/src/bundles/webapp/sentry.js b/swh/web/assets/src/bundles/webapp/sentry.js
new file mode 100644
--- /dev/null
+++ b/swh/web/assets/src/bundles/webapp/sentry.js
@@ -0,0 +1,21 @@
+/**
+ * Copyright (C) 2019  The Software Heritage developers
+ * See the AUTHORS file at the top-level directory of this distribution
+ * License: GNU Affero General Public License version 3, or any later version
+ * See top-level LICENSE file for more information
+ */
+
+import * as Sentry from '@sentry/browser';
+
+// Called by a <script> object in the header, after the configuration is
+// loaded.
+export function sentryInit(sentryDsn) {
+  if (sentryDsn !== undefined) {
+    Sentry.init({ dsn: sentryDsn });
+  }
+}
+
+// May be used in other scripts to report exceptions.
+export function sentryCaptureException(exc) {
+  Sentry.captureException(exc);
+}
diff --git a/swh/web/common/utils.py b/swh/web/common/utils.py
--- a/swh/web/common/utils.py
+++ b/swh/web/common/utils.py
@@ -25,6 +25,7 @@
 )
 
 from swh.web.common.exc import BadInputExc
+from swh.web.config import get_config
 
 SWH_WEB_METRICS_REGISTRY = CollectorRegistry(auto_describe=True)
 
@@ -327,8 +328,11 @@
     Django context processor used to inject variables
     in all swh-web templates.
     """
-    return {'swh_object_icons': swh_object_icons,
-            'available_languages': None}
+    return {
+        'swh_object_icons': swh_object_icons,
+        'available_languages': None,
+        'swh_client_config': get_config()['client_config'],
+    }
 
 
 class EnforceCSRFAuthentication(SessionAuthentication):
diff --git a/swh/web/config.py b/swh/web/config.py
--- a/swh/web/config.py
+++ b/swh/web/config.py
@@ -101,6 +101,7 @@
     'e2e_tests_mode': ('bool', False),
     'es_workers_index_url': ('string', ''),
     'history_counters_url': ('string', 'https://stats.export.softwareheritage.org/history_counters.json'), # noqa
+    'client_config': ('dict', {}),
 }
 
 swhweb_config = {}  # type: Dict[str, Any]
diff --git a/swh/web/templates/layout.html b/swh/web/templates/layout.html
--- a/swh/web/templates/layout.html
+++ b/swh/web/templates/layout.html
@@ -45,6 +45,11 @@
 */
     </script>
 
+    <script>
+      SWH_CONFIG = {{swh_client_config|jsonify}};
+      swh.webapp.sentryInit(SWH_CONFIG.sentry_dsn);
+    </script>
+
     <script src="{% url 'js_reverse' %}" type="text/javascript"></script>
 
     <script>
diff --git a/yarn.lock b/yarn.lock
--- a/yarn.lock
+++ b/yarn.lock
@@ -1511,6 +1511,58 @@
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz#2b5a3ab3f918cca48a8c754c08168e3f03eba61b"
   integrity sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==
 
+"@sentry/browser@^5.10.2":
+  version "5.10.2"
+  resolved "https://registry.yarnpkg.com/@sentry/browser/-/browser-5.10.2.tgz#0bbb05505c58ea998c833cffec3f922fe4b4fa58"
+  integrity sha512-r3eyBu2ln7odvWtXARCZPzpuGrKsD6U9F3gKTu4xdFkA0swSLUvS7AC2FUksj/1BE23y+eB/zzPT+RYJ58tidA==
+  dependencies:
+    "@sentry/core" "5.10.2"
+    "@sentry/types" "5.10.0"
+    "@sentry/utils" "5.10.2"
+    tslib "^1.9.3"
+
+"@sentry/core@5.10.2":
+  version "5.10.2"
+  resolved "https://registry.yarnpkg.com/@sentry/core/-/core-5.10.2.tgz#1cb64489e6f8363c3249415b49d3f1289814825f"
+  integrity sha512-sKVeFH3v8K8xw2vM5MKMnnyAAwih+JSE3pbNL0CcCCA+/SwX+3jeAo2BhgXev2SAR/TjWW+wmeC9TdIW7KyYbg==
+  dependencies:
+    "@sentry/hub" "5.10.2"
+    "@sentry/minimal" "5.10.2"
+    "@sentry/types" "5.10.0"
+    "@sentry/utils" "5.10.2"
+    tslib "^1.9.3"
+
+"@sentry/hub@5.10.2":
+  version "5.10.2"
+  resolved "https://registry.yarnpkg.com/@sentry/hub/-/hub-5.10.2.tgz#25d9f36b8f7c5cb65cf486737fa61dc9bf69b7e3"
+  integrity sha512-hSlZIiu3hcR/I5yEhlpN9C0nip+U7hiRzRzUQaBiHO4YG4TC58NqnOPR89D/ekiuHIXzFpjW9OQmqtAMRoSUYA==
+  dependencies:
+    "@sentry/types" "5.10.0"
+    "@sentry/utils" "5.10.2"
+    tslib "^1.9.3"
+
+"@sentry/minimal@5.10.2":
+  version "5.10.2"
+  resolved "https://registry.yarnpkg.com/@sentry/minimal/-/minimal-5.10.2.tgz#267c2f3aa6877a0fe7a86971942e83f3ee616580"
+  integrity sha512-GalixiM9sckYfompH5HHTp9XT2BcjawBkcl1DMEKUBEi37+kUq0bivOBmnN1G/I4/wWOUdnAI/kagDWaWpbZPg==
+  dependencies:
+    "@sentry/hub" "5.10.2"
+    "@sentry/types" "5.10.0"
+    tslib "^1.9.3"
+
+"@sentry/types@5.10.0":
+  version "5.10.0"
+  resolved "https://registry.yarnpkg.com/@sentry/types/-/types-5.10.0.tgz#4f0ba31b6e4d5371112c38279f11f66c73b43746"
+  integrity sha512-TW20GzkCWsP6uAxR2JIpIkiitCKyIOfkyDsKBeLqYj4SaZjfvBPnzgNCcYR0L0UsP1/Es6oHooZfIGSkp6GGxQ==
+
+"@sentry/utils@5.10.2":
+  version "5.10.2"
+  resolved "https://registry.yarnpkg.com/@sentry/utils/-/utils-5.10.2.tgz#261f575079d30aaf604e59f5f4de0aa21db22252"
+  integrity sha512-UcbbaFpYrGSV448lQ16Cr+W/MPuKUflQQUdrMCt5vgaf5+M7kpozlcji4GGGZUCXIA7oRP93ABoXj55s1OM9zw==
+  dependencies:
+    "@sentry/types" "5.10.0"
+    tslib "^1.9.3"
+
 "@sweetalert2/theme-bootstrap-4@^2.2.1":
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/@sweetalert2/theme-bootstrap-4/-/theme-bootstrap-4-2.2.1.tgz#a0e3496f2d5aa2993f8fe1c59dcec0673941cddb"
@@ -12719,7 +12771,7 @@
   dependencies:
     glob "^7.1.2"
 
-tslib@^1.9.0:
+tslib@^1.9.0, tslib@^1.9.3:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
   integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==