diff --git a/in/index.rst b/in/index.rst
index 8bf8de4..2a212a0 100644
--- a/in/index.rst
+++ b/in/index.rst
@@ -5,6 +5,7 @@ RTFD
    :maxdepth: 2
 
    public/firefox/index
+   public/libnss3-tools/index
    public/archives/index
    public/code/index
    public/containers/index
diff --git a/in/public/libnss3-tools/import.rst b/in/public/libnss3-tools/import.rst
new file mode 100644
index 0000000..42ac6cd
--- /dev/null
+++ b/in/public/libnss3-tools/import.rst
@@ -0,0 +1,11 @@
+Import
+======
+
+Client certificate
+------------------
+
+.. code:: shell
+
+ pk12util \
+ -d ~/.mozilla/firefox/default \
+ -i /path/to/client_certificate.pfx
diff --git a/in/public/libnss3-tools/index.rst b/in/public/libnss3-tools/index.rst
new file mode 100644
index 0000000..288d10b
--- /dev/null
+++ b/in/public/libnss3-tools/index.rst
@@ -0,0 +1,9 @@
+libnss3-tools
+=============
+
+.. todo:: delete
+
+.. toctree::
+
+   list
+   import
diff --git a/in/public/libnss3-tools/list.rst b/in/public/libnss3-tools/list.rst
new file mode 100644
index 0000000..3e7e602
--- /dev/null
+++ b/in/public/libnss3-tools/list.rst
@@ -0,0 +1,20 @@
+List
+====
+
+Certificates
+------------
+
+.. code:: shell
+
+ certutil \
+ -d ~/.mozilla/firefox/default \
+ -L
+
+Keys
+----
+
+.. code:: shell
+
+ certutil \
+ -d ~/.mozilla/firefox/default \
+ -K