diff --git a/archivebox/core/views.py b/archivebox/core/views.py
index b7911674..5efa79cd 100644
--- a/archivebox/core/views.py
+++ b/archivebox/core/views.py
@@ -57,19 +57,22 @@ class AddLinks(View):
 
     def post(self, request):
         url = request.POST['url']
-        print(f'[+] Adding URL: {url}')
-        add_stdout = StringIO()
-        with redirect_stdout(add_stdout):
-            extracted_links = add(
-                import_str=url,
-                update_all=False,
-                out_dir=OUTPUT_DIR,
-            )
-        print(add_stdout.getvalue())
+        if url:
+            print(f'[+] Adding URL: {url}')
+            add_stdout = StringIO()
+            with redirect_stdout(add_stdout):
+                extracted_links = add(
+                    import_str=url,
+                    update_all=False,
+                    out_dir=OUTPUT_DIR,
+                )
+            print(add_stdout.getvalue())
 
-        context = {
-            "stdout": ansi_to_html(add_stdout.getvalue())
-        }
+            context = {
+                "stdout": ansi_to_html(add_stdout.getvalue())
+            }
+        else:
+            context = {"stdout": "Please enter a URL"}
 
         return render(template_name=self.template, request=request, context=context)
 
diff --git a/archivebox/themes/default/add_links.html b/archivebox/themes/default/add_links.html
index db09322f..6c625594 100644
--- a/archivebox/themes/default/add_links.html
+++ b/archivebox/themes/default/add_links.html
@@ -2,231 +2,211 @@
 
 <!DOCTYPE html>
 <html lang="en">
-  <head>
-    <title>Archived Sites</title>
-    <meta
-      charset="utf-8"
-      name="viewport"
-      content="width=device-width, initial-scale=1"
-    />
-    <style>
-      html,
-      body {
-        width: 100%;
-        height: 100%;
-        font-size: 18px;
-        font-weight: 200;
-        text-align: center;
-        margin: 0px;
-        padding: 0px;
-        font-family: "Gill Sans", Helvetica, sans-serif;
-      }
-      .header-top small {
-        font-weight: 200;
-        color: #efefef;
-      }
+    <head>
+        <title>Archived Sites</title>
+        <meta charset="utf-8" name="viewport" content="width=device-width, initial-scale=1">
+        <style>
+            html, body {
+                width: 100%;
+                height: 100%;
+                font-size: 18px;
+                font-weight: 200;
+                text-align: center;
+                margin: 0px;
+                padding: 0px;
+                font-family: "Gill Sans", Helvetica, sans-serif;
+            }
+            .header-top small {
+                font-weight: 200;
+                color: #efefef;
+            }
+            
+            .header-top {
+                width: 100%;
+                height: auto;
+                min-height: 40px;
+                margin: 0px;
+                text-align: center;
+                color: white;
+                font-size: calc(11px + 0.84vw);
+                font-weight: 200;
+                padding: 4px 4px;
+                border-bottom: 3px solid #aa1e55;
+                background-color: #aa1e55;
+            }
+            input[type=search] {
+                width: 22vw;
+                border-radius: 4px;
+                border: 1px solid #aeaeae;
+                padding: 3px 5px;
+            }
+            .nav > div {
+                min-height: 30px;
+            }
+            .header-top a {
+                text-decoration: none;
+                color: rgba(0,0,0,0.6);
+            }
+            .header-top a:hover {
+                text-decoration: none;
+                color: rgba(0,0,0,0.9);
+            }
+            .header-top .col-lg-4 {
+                text-align: center;
+                padding-top: 4px;
+                padding-bottom: 4px;
+            }
+            .header-archivebox img {
+                display: inline-block;
+                margin-right: 3px;
+                height: 30px;
+                margin-left: 12px;
+                margin-top: -4px;
+                margin-bottom: 2px;
+            }
+            .header-archivebox img:hover {
+                opacity: 0.5;
+            }
 
-      .header-top {
-        width: 100%;
-        height: auto;
-        min-height: 40px;
-        margin: 0px;
-        text-align: center;
-        color: white;
-        font-size: calc(11px + 0.84vw);
-        font-weight: 200;
-        padding: 4px 4px;
-        border-bottom: 3px solid #aa1e55;
-        background-color: #aa1e55;
-      }
-      input[type="search"] {
-        width: 22vw;
-        border-radius: 4px;
-        border: 1px solid #aeaeae;
-        padding: 3px 5px;
-      }
-      .nav > div {
-        min-height: 30px;
-      }
-      .header-top a {
-        text-decoration: none;
-        color: rgba(0, 0, 0, 0.6);
-      }
-      .header-top a:hover {
-        text-decoration: none;
-        color: rgba(0, 0, 0, 0.9);
-      }
-      .header-top .col-lg-4 {
-        text-align: center;
-        padding-top: 4px;
-        padding-bottom: 4px;
-      }
-      .header-archivebox img {
-        display: inline-block;
-        margin-right: 3px;
-        height: 30px;
-        margin-left: 12px;
-        margin-top: -4px;
-        margin-bottom: 2px;
-      }
-      .header-archivebox img:hover {
-        opacity: 0.5;
-      }
-
-      #table-bookmarks_length,
-      #table-bookmarks_filter {
-        padding-top: 12px;
-        opacity: 0.8;
-        padding-left: 24px;
-        padding-right: 22px;
-        margin-bottom: -16px;
-      }
-      table {
-        padding: 6px;
-        width: 100%;
-      }
-      table thead th {
-        font-weight: 400;
-      }
-      table tr {
-        height: 35px;
-      }
-      tbody tr:nth-child(odd) {
-        background-color: #ffebeb !important;
-      }
-      table tr td {
-        white-space: nowrap;
-        overflow: hidden;
-        /*padding-bottom: 0.4em;*/
-        /*padding-top: 0.4em;*/
-        padding-left: 2px;
-        text-align: center;
-      }
-      table tr td a {
-        text-decoration: none;
-      }
-      table tr td img,
-      table tr td object {
-        display: inline-block;
-        margin: auto;
-        height: 24px;
-        width: 24px;
-        padding: 0px;
-        padding-right: 5px;
-        vertical-align: middle;
-        margin-left: 4px;
-      }
-      #table-bookmarks {
-        width: 100%;
-        overflow-y: scroll;
-        table-layout: fixed;
-      }
-      .dataTables_wrapper {
-        background-color: #fafafa;
-      }
-      table tr a span[data-archived~="False"] {
-        opacity: 0.4;
-      }
-      .files-spinner {
-        height: 15px;
-        width: auto;
-        opacity: 0.5;
-        vertical-align: -2px;
-      }
-      .in-progress {
-        display: none;
-      }
-      body[data-status~="finished"] .files-spinner {
-        display: none;
-      }
-      /*body[data-status~=running] .in-progress {
+            #table-bookmarks_length, #table-bookmarks_filter {
+                padding-top: 12px;
+                opacity: 0.8;
+                padding-left: 24px;
+                padding-right: 22px;
+                margin-bottom: -16px;
+            }
+            table {
+                padding: 6px;
+                width: 100%;
+            }
+            table thead th {
+                font-weight: 400;
+            }
+            table tr {
+                height: 35px;
+            }
+            tbody tr:nth-child(odd) {
+               background-color: #ffebeb !important;
+            }
+            table tr td {
+                white-space: nowrap;
+                overflow: hidden;
+                /*padding-bottom: 0.4em;*/
+                /*padding-top: 0.4em;*/
+                padding-left: 2px;
+                text-align: center;
+            }
+            table tr td a {
+                text-decoration: none;
+            }
+            table tr td img, table tr td object {
+                display: inline-block;
+                margin: auto;
+                height: 24px;
+                width: 24px;
+                padding: 0px;
+                padding-right: 5px;
+                vertical-align: middle;
+                margin-left: 4px;
+            }
+            #table-bookmarks {
+                width: 100%; 
+                overflow-y: scroll;
+                table-layout: fixed;
+            }
+            .dataTables_wrapper {
+                background-color: #fafafa;
+            }
+            table tr a span[data-archived~=False] {
+                opacity: 0.4;
+            }
+            .files-spinner {
+                height: 15px;
+                width: auto;
+                opacity: 0.5;
+                vertical-align: -2px;
+            }
+            .in-progress {
+                display: none;
+            }
+            body[data-status~=finished] .files-spinner {
+                display: none;
+            }
+            /*body[data-status~=running] .in-progress {
                 display: inline-block;
             }*/
-      tr td a.favicon img {
-        padding-left: 6px;
-        padding-right: 12px;
-        vertical-align: -4px;
-      }
-      tr td a.title {
-        font-size: 1.4em;
-        text-decoration: none;
-        color: black;
-      }
-      tr td a.title small {
-        background-color: #efefef;
-        border-radius: 4px;
-        float: right;
-      }
-      input[type="search"]::-webkit-search-cancel-button {
-        -webkit-appearance: searchfield-cancel-button;
-      }
-      .title-col {
-        text-align: left;
-      }
-      .title-col a {
-        color: black;
-      }
-    </style>
-    <link rel="stylesheet" href="{% static 'bootstrap.min.css' %}" />
-    <link rel="stylesheet" href="{% static 'jquery.dataTables.min.css' %}" />
-    <script src="{% static 'jquery.min.js' %}"></script>
-    <script src="{% static 'jquery.dataTables.min.js' %}"></script>
-    <script>
-      document.addEventListener(
-        "error",
-        function (e) {
-          e.target.style.opacity = 0;
-        },
-        true
-      );
-      jQuery(document).ready(function () {
-        jQuery("#table-bookmarks").DataTable({
-          stateSave: true, // save state (filtered input, number of entries shown, etc) in localStorage
-          dom: "<lf<t>ip>", // how to show the table and its helpers (filter, etc) in the DOM
-          order: [[0, "desc"]],
-          iDisplayLength: 100,
-        });
-      });
-    </script>
-  </head>
-  <body data-status="finished">
-    <header>
-      <div class="header-top container-fluid">
-        <div class="row nav">
-          <div class="col-sm-2">
-            <a
-              href="/"
-              class="header-archivebox"
-              title="Last updated: {{updated}}"
-            >
-              <img src="{% static 'archive.png' %}" alt="Logo" />
-              ArchiveBox: Add
-            </a>
-          </div>
-          <div class="col-sm-10" style="text-align: right;">
-            <a href="/">Main Index</a> &nbsp; | &nbsp;
-            <a href="/admin/">Admin</a> &nbsp; | &nbsp;
-            <a href="https://github.com/pirate/ArchiveBox/wiki">Docs</a>
-          </div>
-        </div>
-      </div>
-    </header>
-    <center>
-      {{ stdout | safe }}
-      <br /><br />
-      <form action="?" method="POST">
-        {% csrf_token %} Add new links...<br />
-        <input
-          type="text"
-          name="url"
-          placeholder="URL of page or feed..."
-        /><br />
-        <button role="submit">Add</button>
-      </form>
+            tr td a.favicon img {
+                padding-left: 6px;
+                padding-right: 12px;
+                vertical-align: -4px;
+            }
+            tr td a.title {
+                font-size: 1.4em;
+                text-decoration:none;
+                color:black;
+            }
+            tr td a.title small {
+                background-color: #efefef;
+                border-radius: 4px;
+                float:right
+            }
+            input[type=search]::-webkit-search-cancel-button {
+                -webkit-appearance: searchfield-cancel-button;
+            }
+            .title-col {
+                text-align: left;
+            }
+            .title-col a {
+                color: black;
+            }
+        </style>
+        <link rel="stylesheet" href="{% static 'bootstrap.min.css' %}">
+        <link rel="stylesheet" href="{% static 'jquery.dataTables.min.css' %}"/>
+        <script src="{% static 'jquery.min.js' %}"></script>
+        <script src="{% static 'jquery.dataTables.min.js' %}"></script>
+        <script>
+            document.addEventListener('error', function(e) {
+              e.target.style.opacity = 0;
+            }, true)
+            jQuery(document).ready(function() {
+                jQuery('#table-bookmarks').DataTable({
+                    stateSave: true, // save state (filtered input, number of entries shown, etc) in localStorage
+                    dom: '<lf<t>ip>', // how to show the table and its helpers (filter, etc) in the DOM
+                    order: [[0, 'desc']],
+                    iDisplayLength: 100,
+                });
+            });
+        </script>
+    </head>
+    <body data-status="finished">
+        <header>
+            <div class="header-top container-fluid">
+                <div class="row nav">
+                    <div class="col-sm-2">
+                        <a href="/" class="header-archivebox" title="Last updated: {{updated}}">
+                            <img src="{% static 'archive.png' %}" alt="Logo"/>
+                            ArchiveBox: Add
+                        </a>
+                    </div>
+                    <div class="col-sm-10" style="text-align: right">
+                        <a href="/">Main Index</a> &nbsp; | &nbsp; 
+                        <a href="/admin/">Admin</a> &nbsp; | &nbsp; 
+                        <a href="https://github.com/pirate/ArchiveBox/wiki">Docs</a>
+                    </div>
+                </div>
+            </div>
+        </header>
+        <center>
+            {{ stdout | safe }}
+            <br/><br/>
+            <form action="?" method="POST">{% csrf_token %}
+                Add new links...<br/>
+                <input type="text" name="url" placeholder="URL of page or feed..."/><br/>
+                <button role="submit">Add</button>
+            </form>
+        </center>
 
-      <a href="{% url 'admin:core_snapshot_changelist' %}"
-        >Go back to Snapshot list</a
-      >
-    </center>
-  </body>
+        <a href="{% url 'admin:core_snapshot_changelist' %}">Go back to Snapshot list</a>
+        
+    </body>
 </html>
