diff --git a/README.ko.md b/README.ko.md
index 7dbb980..280776a 100644
--- a/README.ko.md
+++ b/README.ko.md
@@ -285,6 +285,7 @@ tocFolding = false
 enableTocSwitch = true # single page table of contents visibility switch
 itemsPerCategory = 5 # maximum number of posts shown in the sidebar.
 sidebarPosition = "right" # bio, profile component layout position
+tocLevels = ["h2", "h3", "h4"] # minimum h2, maximum h4 in your article
 
 # footer
 showPoweredBy = true # show footer text: Powered by Hugo and Zzo theme
diff --git a/README.md b/README.md
index 14a0397..6082c46 100644
--- a/README.md
+++ b/README.md
@@ -293,6 +293,7 @@ tocFolding = false
 enableTocSwitch = true # single page table of contents visibility switch
 itemsPerCategory = 5 # maximum number of posts shown in the sidebar.
 sidebarPosition = "right" # bio, profile component layout position
+tocLevels = ["h2", "h3", "h4"] # minimum h2, maximum h4 in your article
 
 # footer
 showPoweredBy = true # show footer text: Powered by Hugo and Zzo theme
diff --git a/archetypes/default.md b/archetypes/default.md
index f581553..e082fd7 100644
--- a/archetypes/default.md
+++ b/archetypes/default.md
@@ -7,6 +7,7 @@ hideToc: false
 enableToc: true
 enableTocContent: false
 tocPosition: inner
+tocLevels: ["h2", "h3", "h4"]
 tags:
 -
 series:
diff --git a/exampleSite/config/_default/params.toml b/exampleSite/config/_default/params.toml
index 9391f7b..1b6f348 100644
--- a/exampleSite/config/_default/params.toml
+++ b/exampleSite/config/_default/params.toml
@@ -55,6 +55,7 @@ tocPosition = "inner" # inner, outer
 enableTocSwitch = true
 itemsPerCategory = 5
 sidebarPosition = "right"
+tocLevels = ["h2", "h3", "h4"]
 
 # footer
 showPoweredBy = true
diff --git a/layouts/partials/head/scripts.html b/layouts/partials/head/scripts.html
index 3a5f403..1e81e67 100644
--- a/layouts/partials/head/scripts.html
+++ b/layouts/partials/head/scripts.html
@@ -214,11 +214,19 @@
 
     {{ $tocFolding := $.Param "tocFolding" }}
     var tocFolding = JSON.parse({{ $tocFolding | jsonify }});
+    {{ $tocLevels := ($.Param "tocLevels") }}
+    var tocLevels = JSON.parse({{ $tocLevels | jsonify }});
+    
+    if (tocLevels) {
+      tocLevels = tocLevels.toString();
+    } else {
+      tocLevels = "h1, h2, h3, h4, h5, h6";
+    }
 
     // tab
     singleContentsElem && singleContentsElem.querySelectorAll(".tab") ?
     singleContentsElem.querySelectorAll(".tab").forEach(function (elem) {
-      elem.querySelectorAll("h1, h2, h3, h4, h5, h6").forEach(function (element) {
+      elem.querySelectorAll(tocLevels).forEach(function (element) {
         notAllowedTitleIds = Array.isArray(notAllowedTitleIds) ?
           notAllowedTitleIds.concat(element.getAttribute('id')) :
           [element.getAttribute('id')];
@@ -227,7 +235,7 @@
 
     // expand
     expandContents ? expandContents.forEach(function(elem) {
-      elem.querySelectorAll("h1, h2, h3, h4, h5, h6").forEach(function (element) {
+      elem.querySelectorAll(tocLevels).forEach(function (element) {
         notAllowedTitleIds = Array.isArray(notAllowedTitleIds) ?
           notAllowedTitleIds.concat(element.getAttribute('id')) :
           [element.getAttribute('id')];
@@ -236,7 +244,7 @@
 
     // box
     boxContents ? boxContents.forEach(function(elem) {
-      elem.querySelectorAll("h1, h2, h3, h4, h5, h6").forEach(function (element) {
+      elem.querySelectorAll(tocLevels).forEach(function (element) {
         notAllowedTitleIds = Array.isArray(notAllowedTitleIds) ?
           notAllowedTitleIds.concat(element.getAttribute('id')) :
           [element.getAttribute('id')];
@@ -266,8 +274,8 @@
         }
 
         if (singleContentsElem) {
-          if (singleContentsElem.querySelectorAll("h1, h2, h3, h4, h5, h6").length > 0) {
-            singleContentsElem.querySelectorAll("h1, h2, h3, h4, h5, h6").forEach(function (elem) {
+          if (singleContentsElem.querySelectorAll(tocLevels).length > 0) {
+            singleContentsElem.querySelectorAll(tocLevels).forEach(function (elem) {
               if (toggleTocElem && !toggleTocElem.checked) {
                 return null;
               }
@@ -336,8 +344,8 @@
         }
 
         if (singleContentsElem) {
-          if (singleContentsElem.querySelectorAll("h1, h2, h3, h4, h5, h6").length > 0) {
-            singleContentsElem.querySelectorAll("h1, h2, h3, h4, h5, h6").forEach(function (elem) {
+          if (singleContentsElem.querySelectorAll(tocLevels).length > 0) {
+            singleContentsElem.querySelectorAll(tocLevels).forEach(function (elem) {
               if (toggleTocElem && !toggleTocElem.checked) {
                 return null;
               }