diff --git a/.github/workflows/nosetests.yml b/.github/workflows/nosetests.yml
index d7463d7..786dae7 100644
--- a/.github/workflows/nosetests.yml
+++ b/.github/workflows/nosetests.yml
@@ -30,3 +30,11 @@ jobs:
     - name: Test with nosetests
       run: |
         poetry run mypy .
+
+    - name: Make sure SRIs are up-to-date
+      run: |
+        poetry run tools/generate_sri.py
+        if $?; then
+          echo "SRIs not up-to-date, you must run tools/generate_sri.py"
+          exit 1
+        fi
diff --git a/website/web/__init__.py b/website/web/__init__.py
index 8373e3f..2831226 100644
--- a/website/web/__init__.py
+++ b/website/web/__init__.py
@@ -26,7 +26,9 @@ from lookyloo.helpers import (get_homedir, update_user_agents, get_user_agents,
                               get_taxonomies, load_cookies, CaptureStatus)
 from lookyloo.lookyloo import Lookyloo, Indexing
 from lookyloo.exceptions import NoValidHarFile, MissingUUID
+
 from .proxied import ReverseProxied
+from .helpers import sri_load
 
 app: Flask = Flask(__name__)
 app.wsgi_app = ReverseProxied(app.wsgi_app)  # type: ignore
@@ -192,6 +194,14 @@ def month_name(month: int):
 app.jinja_env.globals.update(month_name=month_name)
 
 
+def get_sri(directory: str, filename: str) -> str:
+    sha512 = sri_load()[directory][filename]
+    return f'sha512-{sha512}'
+
+
+app.jinja_env.globals.update(get_sri=get_sri)
+
+
 # ##### Generic/configuration methods #####
 
 def src_request_ip(request) -> str:
diff --git a/website/web/helpers.py b/website/web/helpers.py
new file mode 100644
index 0000000..f6035c6
--- /dev/null
+++ b/website/web/helpers.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import json
+from functools import lru_cache
+from typing import Dict
+
+from lookyloo.helpers import get_homedir
+
+
+@lru_cache(64)
+def sri_load() -> Dict[str, Dict[str, str]]:
+    with (get_homedir() / 'website' / 'web' / 'sri.txt').open() as f:
+        return json.load(f)
diff --git a/website/web/sri.txt b/website/web/sri.txt
new file mode 100644
index 0000000..0eca9d1
--- /dev/null
+++ b/website/web/sri.txt
@@ -0,0 +1,45 @@
+{
+  "static": {
+    "exe.png": "pWwo9nBLtEss/UJ173zHa6/RpySUyz/XMdNhWc6aRIvwwHMO6a+fLmu2K6TbvO3Jbg4VYL2Af4yhHPyhH3ZeTw==",
+    "datatables.min.css": "d5IZxd9tksyYd6/G+5l9twTq5Mfu3mpQBG1Pdp0092vmClzUiGB00yI3Vqz4o3ib3lHpXlu0MgJts5QBo52PVA==",
+    "json.png": "nE6ROpXE5iovHyd5oh8cnA4ozTa5bZjn1A6b+10b1Hb59O1NcMdcrv8Rqge3CAtSqJDKnrYbMChCT1j48yMwQw==",
+    "img.png": "bknBlmIfSb9qv9/lSaJ2idn2a8bDyvJ2pATj4oOpehRlCdXlWYOyb2jN3wV1QGHFoqyxNqOv5MfCpI0tbqkicg==",
+    "ifr.png": "rI5YJypmz1QcULRf9UaOYSqV4tPUSxUdLAycoYzCwywt4Pw4eWzBg9SUr769VyIimoiIyJR+aNuoIA4p5WO2fQ==",
+    "cookie_read.png": "mdXCeuNFPvshSwIXAJLoR1xFjXb+K2Mgu47Q1fnUAO8j1N2c/uJuE8sGuBHHbS8HOyr/CbOC6Uf3zsm9KvAs8Q==",
+    "d3.v5.min.js": "FHsFVKQ/T1KWJDGSbrUhTJyS1ph3eRrxI228ND0EGaEp6v4a/vGwPWd3Dtd/+9cI7ccofZvl/wulICEurHN1pg==",
+    "tree.js": "JeCMrFdQDrSYAXaJZE/tCOnfusbQI68rzFhyo0ojBCHt2FAs/DDBdYwCpkFNZ7J+n05NpfbegrrKVqd06PCNXA==",
+    "video.png": "gJtmkfr8I1Kw43pYEKjg6CAjgmhl1vIBKBQ3ZkxCu3wvxQm+6kf93iLrrFiY2WuiXzxEn2Leu52GJzmVN5id0g==",
+    "stats.css": "/kY943FwWBTne4IIyf7iBROSfbGd82TeBicEXqKkRwawMVRIvM/Pk5MRa7okUyGIxaDjFQGmV/U1vy+PhN6Jbw==",
+    "generic.js": "c/p+6Dk2kcwd9T9kf/IfoCX/ZU+VbtlUGYBo3qNSzwoUYC1soWwdIwM5rFxwxz9a1tORc/Wu0EFCPRw4ZwbqkQ==",
+    "html.png": "T7pZrb8MMDsA/JV/51hu+TOglTqlxySuEVY0rpDjTuAEyhzk2v+W4kYrj7vX+Tp3n2d2lvVD08PwhCG62Yfbzg==",
+    "down_left.jpg": "UwHkJaZGayY1LewuFM3bJHQCUPG1vYyrVeiGG5mCM9MD9FtAhdbD4hBY3JZNDWv93CXeEAbxL1kqEeHTKnyquQ==",
+    "insecure.svg": "iyoot+eMuRI7SITBdjslYS2WWFntz9VGi0doPoZBi/ZGPGDhm/Sd8SaJPiNCSKht/6dYPqgb90LQJ6a4YrhcFA==",
+    "font.png": "RwoQkj9dT9SLUL2F7cAA16Nat9t2hDb58eQlHF9ThUar829p0INUXG+5XuDaFOC8SsmCZK5vw2f+YAQ6mLC1Qw==",
+    "favicon.ico": "KOmrfwRbOQqhhwSeBkNpMRAxSVMmmLg+2kRMg9iSv7OWjE9spJc7x4MKB4AE/hi0knaV7UBVctAU6XZ7AC72ZA==",
+    "cookie_received.png": "EqL5fRFwjjXkSp242nacVFy7N8f1QAGJv4OIVDKQkDJQvq2MphwUnfLZUQvN3NMayHS/VTGQbgdQVjcOSQ2blA==",
+    "lookyloo.jpeg": "i6wBj8CsIM5YAQLEMQfhs3CNOSKkErF8AMqqM6ZygSwCyQgv9CU8xt94veMZhM/ufBWoz7kAXmR+yywmxsTxug==",
+    "down.jpg": "LHRHJ5yCaSjNcDfEoChGIfh7K5HrMYbaGn7EOlxgZ8GoLIwb0nFBkpoOMG9gMHA/pBX2skkXMukvKJC6P6FBGg==",
+    "index.css": "2hAsQwCClHQ7b6VthbKYIkUPam4Ef6wbSxa3+nK0UuqCHezvPMr3aqpz16gD0lyYop55VEd/dhzZJLA4WMAplQ==",
+    "up.jpg": "d1ljZJ9f5JekyM6RLFFH2Ua44j6neiQBdUIXOenRTjGppQr3JaeglpQIH6BjPCJL177+TH52U3UIRNS5YAyKIg==",
+    "bomb.svg": "Tro3+kCLzfBNBve2gPnsmXsl+tHUQVrFz77zfrWwnAuTraehZaoAfVJgGOYdG8zceXdGLEKzXVi3GdtEXw0sYQ==",
+    "css.png": "XDfV8fW5XRQlHT20rZn3d6LdIp2Dzk+mnZlicBv61iJGFMENLSM4SDgRcGb+x927AlI3lb6qv2C6tJAR2nDl5g==",
+    "empty.svg": "6tfMLNzDFV9P6t1rC2tDRQtOGzrxi/VtIBc8aV0jo4i3u+dn1fIe3/fySBFA6z13n+XjISF5bTRUNBsN3LWinQ==",
+    "datatables.min.js": "xlRU11IaDXTzgBMqyvSzQB3dqBbHatQaSVOUoPkxxNbc39qGxldo4nuAoK+Q5eO7Ldo/3XzuUTqhY9DudM3H6g==",
+    "cookie_in_url.png": "hs/oNPnrR2DkDX9Yp6Daug/QqpWJHemJE6lXpxNafjgOYooezp3DpbqKqADT7QcfcTxxUfe1iPDZJlHOrNMAcw==",
+    "suspicious.svg": "hUHBJBoQFgMkxgQDdQxRNIuBxKoT7Pllsm6KanBxy0ejZPpr1EAtyLn1zZuWKUY6EMpsHIiKMJmuN6OXgYgh6g==",
+    "capture.js": "XhWkFmPwm29Iyf034SS/OXZo+ulN2xo6S6AzdHh+hCBnmygO8dUzX1gsrW91utgxgsmHKjTzXPJCXsylNLw4uQ==",
+    "tree.css": "ma+WfBfjVZpKH9KDg+LayyBac2r95VgqG4jll75Xc1e0zwBXe2/ZxI6Y9AeGCNK5YvtcFNd6oH3c+2KxV8iT0A==",
+    "redirect.png": "PAjzlPV97rEFvH55mG1ZC9wRl98be3yMeX/nENuFkJcds6/AXgSR2ig/QyPULgobSnNgiYieLVWY/oqsgeywrQ==",
+    "secure.svg": "H8ni7t0d60nCJDVGuZpuxC+RBy/ipAjWT627D12HlZGg6LUmjSwPTQTUekm3UJupEP7TUkhXyq6WHc5gy7QBjg==",
+    "stats_graph.js": "0OEouA6NAxLG2wMd7D2vtGoMrXKna7My98Euc6ecyfdO4/6mIJS87vzISOS4zSZ8u4ehpa+p7E0nWhsXXE7H/Q==",
+    "wtf.png": "5iUj4m5G3tJN3wQvR1jD/hF4OKFrboVeuFejd+6ZUvdll3zjkLeewJQ+zptO9ckzktsMPC2+bKM3zM3CXXWoCw==",
+    "d3.v6.min.js": "0XfwGD1nxplHpehcSVI7lY+m/5L37PNHDt+DOc7aLFckwPXjnjeA1oeNbru7YeI4VLs9i+ADnnHEhP69C9CqTA==",
+    "javascript.png": "sQcLDBrB+fEEt3PPoOwFh0g/RVkhDNrhuBMo0WMzf9IKNnZusYx+J59k8HGkAHFGDbytDwe6Tq6LIVgg/B6nqw==",
+    "check.svg": "CRqUAM/yXxgJwpfg3TeoKD+CIqQj62lxqS3zeCmdPaV3dKftk4jk5Mqc1TGxL7i61X1sgV0/f+KJLEOKTw01ww==",
+    "error_screenshot.png": "IkUKnQ47PYYreukA7Byvx+5ACkcCvqk+jYD0GZoQznsD9qDPWrKAMZxlIku7G3Re19vehIlYawep/THcV/ruTA==",
+    "up_right.jpg": "OMmz+n+MxR34P8/fn5t4DkqKqdJRzQbXQ7fAi2lhkZIJGhVs2vIyY1f2hpYoBxDAX1OcYsSE2lqIR2vXNDGZsA==",
+    "bomb.xcf": "hDMWxjEZyOB+3SnXYiY03qhce8zu91XRKsbJptq/vsr5MLmNUtYvAdCuVcx8hxtMsyf6M061eDGggIJEZSeYkQ==",
+    "loader.gif": "ZZKD5vLSKBWKeUpa2KI9qheUJ49iTI/UULmVU/AX28fBfH00K3lLc2v5pVJZ4qXG1BbB13LTXzRKKU35H2XfNg==",
+    "generic.css": "y5crC022oxKIDs2Z2l3HSIwzmPtXNYd6N8ofJYgu1OsSAADO3qoZ1OZVrsdwn1e9wHK4Mvh6GpKoe+GcDzOmSQ=="
+  }
+}
\ No newline at end of file
diff --git a/website/web/templates/body_hash.html b/website/web/templates/body_hash.html
index 93ce132..10e6095 100644
--- a/website/web/templates/body_hash.html
+++ b/website/web/templates/body_hash.html
@@ -6,7 +6,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 1, "desc" ]],
@@ -24,12 +23,6 @@
 
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
-
 {% block content %}
   <center>
       <h4>{{ body_hash }}</h4>
diff --git a/website/web/templates/bulk_captures.html b/website/web/templates/bulk_captures.html
index 1e5d22a..a6ea92c 100644
--- a/website/web/templates/bulk_captures.html
+++ b/website/web/templates/bulk_captures.html
@@ -6,7 +6,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 0, "desc" ]],
@@ -17,11 +16,6 @@
 </script>
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
 
 {% block content %}
   <center>
diff --git a/website/web/templates/capture.html b/website/web/templates/capture.html
index 4757546..38d69df 100644
--- a/website/web/templates/capture.html
+++ b/website/web/templates/capture.html
@@ -150,5 +150,7 @@
 
 {% block scripts %}
   {{ super() }}
-  <script src='{{ url_for('static', filename='capture.js') }}'></script>
+  <script src='{{ url_for('static', filename='capture.js') }}'
+          integrity="{{get_sri('static', 'capture.js')}}"
+          crossorigin="anonymous"></script>
 {% endblock %}
diff --git a/website/web/templates/categories.html b/website/web/templates/categories.html
index cd0c4f2..e79c537 100644
--- a/website/web/templates/categories.html
+++ b/website/web/templates/categories.html
@@ -6,7 +6,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 1, "desc" ]],
@@ -16,12 +15,6 @@
 
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
-
 {% block content %}
   <div class="table-responsive">
   <table id="table" class="table" style="width:96%">
diff --git a/website/web/templates/cookie_name.html b/website/web/templates/cookie_name.html
index 0196d01..065d088 100644
--- a/website/web/templates/cookie_name.html
+++ b/website/web/templates/cookie_name.html
@@ -6,7 +6,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 1, "desc" ]],
@@ -22,12 +21,6 @@
 
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
-
 {% block content %}
   <center>
       <h2>{{ cookie_name }}</h2>
diff --git a/website/web/templates/cookies.html b/website/web/templates/cookies.html
index 5cdd096..47aeda2 100644
--- a/website/web/templates/cookies.html
+++ b/website/web/templates/cookies.html
@@ -6,7 +6,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 1, "desc" ]],
@@ -16,12 +15,6 @@
 
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
-
 {% block content %}
   <div class="table-responsive">
   <table id="table" class="table" style="width:96%">
diff --git a/website/web/templates/hostname.html b/website/web/templates/hostname.html
index 0a4e9c4..e4f3c5c 100644
--- a/website/web/templates/hostname.html
+++ b/website/web/templates/hostname.html
@@ -6,7 +6,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 0, "desc" ]],
@@ -26,15 +25,8 @@
         window.opener.openTreeInNewTab(treeUUID);
     };
 </script>
-
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
-
 {% block content %}
   <center>
       <h4>{{ url }}</h4>
diff --git a/website/web/templates/hostname_popup.html b/website/web/templates/hostname_popup.html
index 920e380..4091b5c 100644
--- a/website/web/templates/hostname_popup.html
+++ b/website/web/templates/hostname_popup.html
@@ -11,15 +11,11 @@
 
 {% block title %}Details for {{ hostnode.name }} {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
 {% block scripts %}
   {{ super() }}
-  <script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
-  <script src='{{ url_for('static', filename='generic.js') }}'></script>
+  <script src='{{ url_for('static', filename='generic.js') }}'
+          integrity="{{get_sri('static', 'generic.js')}}"
+          crossorigin="anonymous"></script>
   <script type="text/javascript">
   $(document).ready(() => {
     $('table.table').DataTable( {
diff --git a/website/web/templates/index.html b/website/web/templates/index.html
index df4c578..faa213c 100644
--- a/website/web/templates/index.html
+++ b/website/web/templates/index.html
@@ -25,7 +25,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
 $(document).ready(function () {
   $('#table').DataTable( {
@@ -51,8 +50,9 @@ $(document).ready(function () {
 
 {% block styles %}
 {{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-<link rel="stylesheet" href="{{ url_for('static', filename='index.css') }}">
+<link rel="stylesheet" href="{{ url_for('static', filename='index.css') }}"
+      integrity="{{get_sri('static', 'index.css')}}"
+      crossorigin="anonymous">
 {% endblock %}
 
 
diff --git a/website/web/templates/main.html b/website/web/templates/main.html
index e707618..eee0f1b 100644
--- a/website/web/templates/main.html
+++ b/website/web/templates/main.html
@@ -5,12 +5,19 @@
     <!-- Required meta tags -->
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-	<link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}">
+    <link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}"
+          integrity="{{get_sri('static', 'favicon.ico')}}"
+          crossorigin="anonymous">
 
     {% block styles %}
     <!-- Bootstrap CSS -->
     {{ bootstrap.load_css() }}
-    <link rel="stylesheet" href="{{ url_for('static', filename='generic.css') }}">
+    <link rel="stylesheet" href="{{ url_for('static', filename='generic.css') }}"
+          integrity="{{get_sri('static', 'generic.css')}}"
+          crossorigin="anonymous">
+    <link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}"
+          integrity="{{get_sri('static', 'datatables.min.css')}}"
+          crossorigin="anonymous">
     {% endblock %}
 
     <title>{% block title %}{% endblock%}</title>
@@ -28,6 +35,9 @@
     {% block scripts %}
     <!-- Optional JavaScript -->
     {{ bootstrap.load_js() }}
+    <script src='{{ url_for('static', filename='datatables.min.js') }}'
+            integrity="{{get_sri('static', 'datatables.min.js')}}"
+            crossorigin="anonymous"></script>
     {% endblock %}
   </body>
 </html>
diff --git a/website/web/templates/ressources.html b/website/web/templates/ressources.html
index 889d2bd..2b34f4a 100644
--- a/website/web/templates/ressources.html
+++ b/website/web/templates/ressources.html
@@ -9,7 +9,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 2, "desc" ]],
@@ -26,12 +25,6 @@
 
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
-
 {% block content %}
   <div class="table-responsive">
   <table id="table" class="table" style="width:96%">
diff --git a/website/web/templates/search.html b/website/web/templates/search.html
index 9230749..bf03275 100644
--- a/website/web/templates/search.html
+++ b/website/web/templates/search.html
@@ -61,5 +61,7 @@
 
 {% block scripts %}
   {{ super() }}
-  <script src='{{ url_for('static', filename='capture.js') }}'></script>
+  <script src='{{ url_for('static', filename='capture.js') }}'
+          integrity="{{get_sri('static', 'capture.js')}}"
+          crossorigin="anonymous"></script>
 {% endblock %}
diff --git a/website/web/templates/stats.html b/website/web/templates/stats.html
index 583a20b..781f16f 100644
--- a/website/web/templates/stats.html
+++ b/website/web/templates/stats.html
@@ -79,5 +79,7 @@
 
 {% block styles %}
 {{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='stats.css') }}">
+<link rel="stylesheet" href="{{ url_for('static', filename='stats.css') }}"
+      integrity="{{get_sri('static', 'stats.css')}}"
+      crossorigin="anonymous">
 {% endblock %}
diff --git a/website/web/templates/tree.html b/website/web/templates/tree.html
index 856b8ad..414097a 100644
--- a/website/web/templates/tree.html
+++ b/website/web/templates/tree.html
@@ -27,8 +27,12 @@
 
 {% block scripts %}
   {{ super() }}
-  <script src='{{ url_for('static', filename='d3.v6.min.js') }}'></script>
-  <script src='{{ url_for('static', filename='tree.js') }}'></script>
+  <script src='{{ url_for('static', filename='d3.v6.min.js') }}'
+          integrity="{{get_sri('static', 'd3.v6.min.js')}}"
+          crossorigin="anonymous"></script>
+  <script src='{{ url_for('static', filename='tree.js') }}'
+          integrity="{{get_sri('static', 'tree.js')}}"
+          crossorigin="anonymous"></script>
 
   <script>
   $('#modulesModal').on('show.bs.modal', function(e) {
diff --git a/website/web/templates/url.html b/website/web/templates/url.html
index 0a4e9c4..7a9974f 100644
--- a/website/web/templates/url.html
+++ b/website/web/templates/url.html
@@ -6,7 +6,6 @@
 
 {% block scripts %}
 {{ super() }}
-<script src='{{ url_for('static', filename='datatables.min.js') }}'></script>
 <script type="text/javascript">
     $('#table').DataTable( {
         "order": [[ 0, "desc" ]],
@@ -29,12 +28,6 @@
 
 {% endblock %}
 
-{% block styles %}
-{{ super() }}
-<link rel="stylesheet" href="{{ url_for('static', filename='datatables.min.css') }}">
-{% endblock %}
-
-
 {% block content %}
   <center>
       <h4>{{ url }}</h4>