diff --git a/app/filter.py b/app/filter.py
index 012ed91..cd6feb6 100644
--- a/app/filter.py
+++ b/app/filter.py
@@ -53,7 +53,6 @@ class Filter:
         self.fix_question_section()
         self.update_styling(soup)
 
-
         for img in [_ for _ in soup.find_all('img') if 'src' in _.attrs]:
             self.update_element_src(img, 'image/png')
 
diff --git a/app/models/config.py b/app/models/config.py
index 6cfe18f..e69e037 100644
--- a/app/models/config.py
+++ b/app/models/config.py
@@ -325,3 +325,39 @@ class Config:
 
     def __contains__(self, name):
         return hasattr(self, name)
+
+    def is_safe_key(self, key) -> bool:
+        """Establishes a group of config options that are safe to set
+        in the url.
+
+        Args:
+            key (str) -- the key to check against
+
+        Returns:
+            bool -- True/False depending on if the key is in the "safe"
+            array
+        """
+
+        return key in [
+            'lang_search',
+            'lang_interface',
+            'ctry',
+            'dark'
+        ]
+
+    def from_params(self, params) -> 'Config':
+        """Modify user config with search parameters. This is primarily
+        used for specifying configuration on a search-by-search basis on
+        public instances.
+
+        Args:
+            params -- the url arguments (can be any deemed safe by is_safe())
+
+        Returns:
+            Config -- a modified config object
+        """
+        for param_key in params.keys():
+            if not self.is_safe_key(param_key):
+                continue
+            self[param_key] = params.get(param_key)
+        return self
diff --git a/app/routes.py b/app/routes.py
index d1734a3..d205283 100644
--- a/app/routes.py
+++ b/app/routes.py
@@ -161,6 +161,9 @@ def search():
     # Reset element counter
     app.user_elements[session['uuid']] = 0
 
+    # Update user config if specified in search args
+    g.user_config = g.user_config.from_params(g.request_params)
+
     search_util = RoutingUtils(request, g.user_config, session, cookies_disabled=g.cookies_disabled)
     query = search_util.new_search_query()
 
diff --git a/app/templates/header.html b/app/templates/header.html
index 034b591..e99e38e 100644
--- a/app/templates/header.html
+++ b/app/templates/header.html
@@ -3,7 +3,7 @@
         <div class="bz1lBb">
             <form class="Pg70bf" id="search-form" method="POST">
                 <a class="logo-link mobile-logo"
-                   href=""
+                   href="/"
                    style="display:flex; justify-content:center; align-items:center; color:#685e79; font-size:18px; ">
                     <span style="color: #685e79">Whoogle</span>
                 </a>
@@ -24,7 +24,7 @@
 {% else %}
     <header>
         <div class="logo-div">
-            <a class="logo-link" href="">
+            <a class="logo-link" href="/">
                 <span style="color: #685e79">Whoogle</span>
             </a>
         </div>
diff --git a/app/utils/routing_utils.py b/app/utils/routing_utils.py
index a083da2..703b7e0 100644
--- a/app/utils/routing_utils.py
+++ b/app/utils/routing_utils.py
@@ -81,4 +81,14 @@ class RoutingUtils:
             return get_first_link(html_soup), 1
         else:
             formatted_results = content_filter.clean(html_soup)
+
+            # Append user config to all search links, if available
+            param_str = ''.join('&{}={}'.format(k, v) 
+                    for k, v in self.request_params.to_dict(flat=True).items()
+                    if self.config.is_safe_key(k))
+            for link in formatted_results.find_all('a', href=True):
+                if 'search?' not in link['href'] or link['href'].index('search?') > 1:
+                    continue
+                link['href'] += param_str
+
             return formatted_results, content_filter.elements
diff --git a/test/test_routes.py b/test/test_routes.py
index 995e3c7..ff9e0a2 100644
--- a/test/test_routes.py
+++ b/test/test_routes.py
@@ -48,6 +48,12 @@ def test_config(client):
     for key in demo_config.keys():
         assert config[key] == demo_config[key]
 
+    # Test setting config via search
+    custom_config = '&dark=1&lang_interface=lang_en'
+    rv = client.get('/search?q=test' + custom_config)
+    assert rv._status_code == 200
+    assert custom_config.replace('&', '&amp;') in str(rv.data)
+
 
 def test_opensearch(client):
     rv = client.get('/opensearch.xml')