diff --git a/boards/config/default_settings.ini b/boards/config/default_settings.ini
--- a/boards/config/default_settings.ini
+++ b/boards/config/default_settings.ini
@@ -43,3 +43,6 @@ ArchiveThreads = true
 
 [RSS]
 MaxItems = 20
+
+[External]
+ImageSearchHost=http://127.0.0.1/
diff --git a/boards/templates/boards/thread_gallery.html b/boards/templates/boards/thread_gallery.html
--- a/boards/templates/boards/thread_gallery.html
+++ b/boards/templates/boards/thread_gallery.html
@@ -24,7 +24,8 @@
                             {{ image.get_view }}
                             <div class="gallery_image_metadata">
                                 {{ image.get_size.0 }}x{{ image.get_size.1 }}
-                                {% image_actions image.file.url request.get_host %}
+                                {% image_actions image.file.url %},
+                                [<a href="{% url 'feed' %}?image_hash={{ image.hash }}">{{ site_name }}</a>]
                                 <br />
                                 <a href="{{ post.get_absolute_url }}">>>{{ post.id }}</a>
                             </div>
diff --git a/boards/templatetags/board.py b/boards/templatetags/board.py
--- a/boards/templatetags/board.py
+++ b/boards/templatetags/board.py
@@ -3,8 +3,10 @@ import re
 from django.shortcuts import get_object_or_404
 from django import template
 from django.utils.text import re_tag
+from django.core.urlresolvers import reverse
 
 from boards.mdx_neboard import LINE_BREAK_HTML
+from boards import settings
 
 
 IMG_ACTION_URL = '[<a href="{}">{}</a>]'
@@ -20,11 +22,11 @@ register = template.Library()
 actions = [
     {
         'name': 'google',
-        'link': 'http://google.com/searchbyimage?image_url=%s',
+        'link': 'https://www.google.com/searchbyimage?image_url={}',
     },
     {
         'name': 'iqdb',
-        'link': 'http://iqdb.org/?url=%s',
+        'link': 'http://iqdb.org/?url={}',
     },
 ]
 
@@ -41,11 +43,13 @@ def post_url(*args, **kwargs):
 @register.simple_tag(name='image_actions')
 def image_actions(*args, **kwargs):
     image_link = args[0]
-    if len(args) > 1:
-        image_link = 'http://' + args[1] + image_link  # TODO https?
+    host = settings.get('External', 'ImageSearchHost')
+    if host.endswith('/'):
+        host = host[:-1]
+    image_link = settings.get('External', 'ImageSearchHost') + image_link
 
     return ', '.join([IMG_ACTION_URL.format(
-        action['link'] % image_link, action['name']) for action in actions])
+        action['link'].format(image_link), action['name']) for action in actions])
 
 
 @register.inclusion_tag('boards/post.html', name='post_view', takes_context=True)
diff --git a/boards/views/feed.py b/boards/views/feed.py
--- a/boards/views/feed.py
+++ b/boards/views/feed.py
@@ -21,13 +21,68 @@ TEMPLATE = 'boards/feed.html'
 DEFAULT_PAGE = 1
 
 
+class FeedFilter:
+    @staticmethod
+    def get_filtered_posts(request, posts):
+        return posts
+
+
+class TripcodeFilter(FeedFilter):
+    @staticmethod
+    def get_filtered_posts(request, posts):
+        filtered_posts = posts
+        tripcode = request.GET.get('tripcode', None)
+        if tripcode:
+            filtered_posts = filtered_posts.filter(tripcode)
+        return filtered_posts
+
+
+class FavoritesFilter(FeedFilter):
+    @staticmethod
+    def get_filtered_posts(request, posts):
+        filtered_posts = posts
+
+        favorites = 'favorites' in request.GET
+        if favorites:
+            settings_manager = get_settings_manager(request)
+            fav_thread_ops = Post.objects.filter(id__in=settings_manager.get_fav_threads().keys())
+            fav_threads = [op.get_thread() for op in fav_thread_ops]
+            filtered_posts = filtered_posts.filter(thread__in=fav_threads)
+        return filtered_posts
+
+
+class IpFilter(FeedFilter):
+    @staticmethod
+    def get_filtered_posts(request, posts):
+        filtered_posts = posts
+
+        ip = request.GET.get('ip', None)
+        if ip and request.user.has_perm('post_delete'):
+            filtered_posts = filtered_posts.filter(poster_ip=ip)
+        return filtered_posts
+
+
+class HashFilter(FeedFilter):
+    @staticmethod
+    def get_filtered_posts(request, posts):
+        filtered_posts = posts
+
+        image_hash = request.GET.get('image_hash', None)
+        if image_hash:
+            filtered_posts = filtered_posts.filter(attachments__hash=image_hash)
+        return filtered_posts
+
+
 class FeedView(PostMixin, BaseBoardView):
+    filters = (
+            TripcodeFilter,
+            FavoritesFilter,
+            IpFilter,
+            HashFilter,
+    )
 
     def get(self, request):
         page = request.GET.get('page', DEFAULT_PAGE)
-        tripcode = request.GET.get('tripcode', None)
-        favorites = 'favorites' in request.GET
-        ip = request.GET.get('ip', None)
 
         params = self.get_context_data(request=request)
 
@@ -36,14 +91,8 @@ class FeedView(PostMixin, BaseBoardView)
         posts = Post.objects.exclude(
             thread__tags__in=settings_manager.get_hidden_tags()).order_by(
             '-pub_time').prefetch_related('attachments', 'thread')
-        if tripcode:
-            posts = posts.filter(tripcode=tripcode)
-        if favorites:
-            fav_thread_ops = Post.objects.filter(id__in=settings_manager.get_fav_threads().keys())
-            fav_threads = [op.get_thread() for op in fav_thread_ops]
-            posts = posts.filter(thread__in=fav_threads)
-        if ip and request.user.has_perm('post_delete'):
-            posts = posts.filter(poster_ip=ip)
+        for filter in self.filters:
+            posts = filter.get_filtered_posts(request, posts)
 
         paginator = get_paginator(posts, POSTS_PER_PAGE)
         paginator.current_page = int(page)