diff --git a/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode)(AutoHeadingIDs).html b/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode)(AutoHeadingIDs).html
index f86c92f..6ec9def 100644
--- a/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode)(AutoHeadingIDs).html
+++ b/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode)(AutoHeadingIDs).html
@@ -1,24 +1,24 @@
-<h1 id="part1">part 1</h1>
+<h1 id="part1">part 1<a class="headerlink" href="#part1" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="part2">part 2</h1>
+<h1 id="part2">part 2<a class="headerlink" href="#part2" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="part3">part 3</h1>
+<h1 id="part3">part 3<a class="headerlink" href="#part3" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="part4">part 4</h1>
+<h1 id="part4">part 4<a class="headerlink" href="#part4" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="header-identifiers-in-html">Header identifiers in HTML</h1>
+<h1 id="header-identifiers-in-html">Header identifiers in HTML<a class="headerlink" href="#header-identifiers-in-html" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="dogs--in-my-house">Dogs?--in <em>my</em> house?</h1>
+<h1 id="dogs--in-my-house">Dogs?--in <em>my</em> house?<a class="headerlink" href="#dogs--in-my-house" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="html-s5-rtf"><a href="#html">HTML</a>, <a href="#S5">S5</a>, <a href="#rtf">RTF</a></h1>
+<h1 id="html-s5-rtf"><a href="#html">HTML</a>, <a href="#S5">S5</a>, <a href="#rtf">RTF</a><a class="headerlink" href="#html-s5-rtf" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="applications">3. Applications</h1>
+<h1 id="applications">3. Applications<a class="headerlink" href="#applications" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="section">!!!</h1>
+<h1 id="section">!!!<a class="headerlink" href="#section" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="heading">heading</h1>
+<h1 id="heading">heading<a class="headerlink" href="#heading" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="heading-1">heading</h1>
+<h1 id="heading-1">heading<a class="headerlink" href="#heading-1" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="heading-2">heading</h1>
+<h1 id="heading-2">heading<a class="headerlink" href="#heading-2" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
diff --git a/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode).html b/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode).html
index 2b1f198..8e86745 100644
--- a/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode).html
+++ b/src/MarkdownDeepTests/testfiles/extramode/HeaderIDs(ExtraMode).html
@@ -1,10 +1,10 @@
-<h1 id="part1">part 1</h1>
+<h1 id="part1">part 1<a class="headerlink" href="#part1" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="part2">part 2</h1>
+<h1 id="part2">part 2<a class="headerlink" href="#part2" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="part3">part 3</h1>
+<h1 id="part3">part 3<a class="headerlink" href="#part3" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
-<h1 id="part4">part 4</h1>
+<h1 id="part4">part 4<a class="headerlink" href="#part4" title="Permalink to this headline"><i class="fa fa-link" aria-hidden="true"></i></a></h1>
 
 <h1>part 5 # {# invalid id}</h1>