diff --git a/CHANGELOG.md b/CHANGELOG.md
index f5e83939d..39c35a577 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,12 @@
   <li> tripcode
   <li> e-mail
  </ul>
+ - The page number on which threads are will now be displayed in OPs, to easily identify where threads are located when:
+ <ul>
+  <li> searching through the index.
+  <li> using different index sorting types.
+  <li> threads highlighted by the filter are moved to the top and move other threads down.
+ <ul>
  - The elapsed time since the last index refresh is now indicated at the top of the index.
  - New setting: `Show replies`, enabled by default. Disable it to only show OPs in the index.
 
diff --git a/src/General/Build.coffee b/src/General/Build.coffee
index 31fbea6a9..9fbcf6315 100644
--- a/src/General/Build.coffee
+++ b/src/General/Build.coffee
@@ -190,10 +190,12 @@ Build =
     else
       ''
 
-    replyLink = if isOP and g.VIEW is 'index'
-      " &nbsp; <span>[<a href='/#{boardID}/res/#{threadID}' class=replylink>Reply</a>]</span>"
+    if isOP and g.VIEW is 'index'
+      pageNum   = Math.floor Index.liveThreadIDs.indexOf(postID) / Index.threadsNumPerPage
+      pageIcon  = "<i class='page-num fa fa-file-o' title='This thread is on page #{pageNum} in the original index.'> #{pageNum}</i> "
+      replyLink = " &nbsp; <span>[<a href='/#{boardID}/res/#{threadID}' class=replylink>Reply</a>]</span>"
     else
-      ''
+      pageIcon = replyLink = ''
 
     container = $.el 'div',
       id: "pc#{postID}"
@@ -226,6 +228,7 @@ Build =
         (if isOP then fileHTML else '') +
 
         "<div class='postInfo desktop' id=pi#{postID}>" +
+          pageIcon +
           "<input type=checkbox name=#{postID} value=delete> " +
           "#{subject} " +
           "<span class='nameBlock#{capcodeClass}'>" +
diff --git a/src/General/Index.coffee b/src/General/Index.coffee
index 251d6efe8..0df36998e 100644
--- a/src/General/Index.coffee
+++ b/src/General/Index.coffee
@@ -250,10 +250,11 @@ Index =
     Index.nodes = []
     threads     = []
     posts       = []
-    for threadData in Index.liveThreadData
+    for threadData, i in Index.liveThreadData
       threadRoot = Build.thread g.BOARD, threadData
       Index.nodes.push threadRoot, $.el 'hr'
       if thread = g.BOARD.threads[threadData.no]
+        thread.setPage Math.floor i / Index.threadsNumPerPage
         thread.setStatus 'Sticky', !!threadData.sticky
         thread.setStatus 'Closed', !!threadData.closed
       else
diff --git a/src/General/Thread.coffee b/src/General/Thread.coffee
index a02f4bc72..60de5ed4d 100644
--- a/src/General/Thread.coffee
+++ b/src/General/Thread.coffee
@@ -12,6 +12,11 @@ class Thread
 
     g.threads[@fullID] = board.threads[@] = @
 
+  setPage: (pageNum) ->
+    icon = $ '.page-num', @OP.nodes.post
+    for key in ['title', 'textContent']
+      icon[key] = icon[key].replace /\d+/, pageNum
+    return
   setStatus: (type, status) ->
     name = "is#{type}"
     return if @[name] is status