diff --git a/src/General/Index.coffee b/src/General/Index.coffee
index 23bf2d873..e53426780 100644
--- a/src/General/Index.coffee
+++ b/src/General/Index.coffee
@@ -112,6 +112,17 @@ Index =
     @selectRev.checked = /-rev$/.test Index.currentSort
     @selectSort.value  = Index.currentSort.replace /-rev$/, ''
 
+    # Last Long Reply options
+    @lastLongOptions = $ '#lastlong-options', @navLinks
+    @lastLongInputs = $$ 'input', @lastLongOptions
+    @lastLongThresholds = [0, 0]
+    @lastLongOptions.hidden = (@selectSort.value isnt 'lastlong')
+    for input, i in @lastLongInputs
+      $.on input, 'change', @cb.lastLongThresholds
+      tRaw = Conf["Last Long Reply Thresholds #{i}"]
+      input.value = @lastLongThresholds[i] =
+        if typeof tRaw is 'object' then (tRaw[g.BOARD.ID] ? 100) else tRaw
+
     # Thread container
     @root = $.el 'div', className: 'board json-index'
     $.on @root, 'click', @cb.hoverToggle
@@ -269,6 +280,21 @@ Index =
     perBoardSort: ->
       Conf['Index Sort'] = if @checked then {} else ''
       Index.saveSort()
+      for i in [0...2]
+        Conf["Last Long Reply Thresholds #{i}"] = if @checked then {} else ''
+        Index.saveLastLongThresholds i
+      return
+
+    lastLongThresholds: ->
+      i = [@parentNode.children...].indexOf @
+      value = +@value
+      unless Number.isFinite(value)
+        @value = Index.lastLongThresholds[i]
+        return
+      Index.lastLongThresholds[i] = value
+      Index.saveLastLongThresholds i
+      Index.changed.order = true
+      Index.pageLoad false
 
     size: (e) ->
       if Conf['Index Mode'] isnt 'catalog'
@@ -439,12 +465,18 @@ Index =
     if hash?
       Index.changed.hash = true
 
-  saveSort: ->
-    if typeof Conf['Index Sort'] is 'object'
-      Conf['Index Sort'][g.BOARD.ID] = Index.currentSort
+  savePerBoard: (key, value) ->
+    if typeof Conf[key] is 'object'
+      Conf[key][g.BOARD.ID] = value
     else
-      Conf['Index Sort'] = Index.currentSort
-    $.set 'Index Sort', Conf['Index Sort']
+      Conf[key] = value
+    $.set key, Conf[key]
+
+  saveSort: ->
+    Index.savePerBoard 'Index Sort', Index.currentSort
+
+  saveLastLongThresholds: (i) ->
+    Index.savePerBoard "Last Long Reply Thresholds #{i}", Index.lastLongThresholds[i]
 
   pageLoad: (scroll=true) ->
     return unless Index.liveThreadData
@@ -473,6 +505,7 @@ Index =
   setupSort: ->
     Index.selectRev.checked = /-rev$/.test Index.currentSort
     Index.selectSort.value  = Index.currentSort.replace /-rev$/, ''
+    Index.lastLongOptions.hidden = (Index.selectSort.value isnt 'lastlong')
 
   getPagesNum: ->
     if Index.search
@@ -776,7 +809,9 @@ Index =
       when 'lastlong'
         lastlong = (thread) ->
           for r, i in (thread.last_replies or []) by -1
-            return r if r.com and Build.parseComment(r.com).replace(/[^a-z]/ig, '').length >= 100
+            len = if r.com then Build.parseComment(r.com).replace(/[^a-z]/ig, '').length else 0
+            if len >= Index.lastLongThresholds[+!!r.ext]
+              return r
           thread
         [liveThreadData...].sort((a, b) ->
           lastlong(b).no - lastlong(a).no
diff --git a/src/General/Index/NavLinks.html b/src/General/Index/NavLinks.html
index f10d5fc69..d93f07e16 100644
--- a/src/General/Index/NavLinks.html
+++ b/src/General/Index/NavLinks.html
@@ -8,6 +8,10 @@
 <span id="hidden-label" hidden> &mdash; <span id="hidden-count"></span> <span id="hidden-toggle">[<a href="javascript:;">Show</a>]</span></span>
 <span id="index-options">
   <input type="checkbox" id="index-rev" name="Reverse Sort" title="Reverse sort order">
+  <span id="lastlong-options" hidden>
+    <input type="text" title="Minimum letter count (without image)">
+    <input type="text" title="Minimum letter count (with image)">
+  </span>
   <select id="index-sort" name="Index Sort">
     <option disabled>Index Sort</option>
     <option value="bump">Bump order</option>
diff --git a/src/css/style.css b/src/css/style.css
index 425de36eb..c6ded5821 100644
--- a/src/css/style.css
+++ b/src/css/style.css
@@ -730,6 +730,23 @@ div[data-checked="false"] > .suboption-list {
 #index-options {
   float: right;
 }
+#lastlong-options {
+  display: inline-block;
+  vertical-align: middle;
+  height: 28px;
+  margin: -14px 0;
+}
+#lastlong-options > input {
+  padding: 0;
+  border: 0 !important;
+  text-align: center;
+  background: transparent;
+  display: block;
+  font-size: 12px;
+  height: 12px;
+  width: 30px;
+  margin: 1px 0;
+}
 .summary {
   text-decoration: none;
 }
diff --git a/src/main/Main.coffee b/src/main/Main.coffee
index 29cb572bd..21fda05e2 100644
--- a/src/main/Main.coffee
+++ b/src/main/Main.coffee
@@ -51,6 +51,7 @@ Main =
     Conf['selectedArchives'] = {}
     Conf['cooldowns'] = {}
     Conf['Index Sort'] = {}
+    Conf["Last Long Reply Thresholds #{i}"] = {} for i in [0...2]
 
     # XXX old key names
     Conf['Except Archives from Encryption'] = false