diff --git a/build/js/IFrame.js b/build/js/IFrame.js
index 15e68699a..cc7a7d904 100644
--- a/build/js/IFrame.js
+++ b/build/js/IFrame.js
@@ -49,6 +49,7 @@ const Default = {
   autoIframeMode: true,
   autoItemActive: true,
   autoShowNewTab: true,
+  allowDuplicates: false,
   loadingScreen: true,
   useNavbarItems: true,
   scrollOffset: 40,
@@ -85,8 +86,13 @@ class IFrame {
   }
 
   createTab(title, link, uniqueName, autoOpen) {
-    const tabId = `panel-${uniqueName}-${Math.floor(Math.random() * 1000)}`
-    const navId = `tab-${uniqueName}-${Math.floor(Math.random() * 1000)}`
+    let tabId = `panel-${uniqueName}`
+    let navId = `tab-${uniqueName}`
+
+    if (this._config.allowDuplicates) {
+      tabId += `-${Math.floor(Math.random() * 1000)}`
+      navId += `-${Math.floor(Math.random() * 1000)}`
+    }
 
     const newNavItem = `<li class="nav-item" role="presentation"><a class="nav-link" data-toggle="row" id="${navId}" href="#${tabId}" role="tab" aria-controls="${tabId}" aria-selected="false">${title}</a></li>`
     $(SELECTOR_TAB_NAVBAR_NAV).append(unescape(escape(newNavItem)))
@@ -134,7 +140,21 @@ class IFrame {
       return
     }
 
-    this.createTab(title, link, link.replace('.html', '').replace('./', '').replace(/["&'./=?[\]]/gi, '-').replace(/(--)/gi, ''), autoOpen)
+    const uniqueName = link.replace('.html', '').replace('./', '').replace(/["&'./=?[\]]/gi, '-').replace(/(--)/gi, '')
+    const navId = `tab-${uniqueName}`
+
+    // eslint-disable-next-line no-console
+    console.log($(`#${navId}`))
+    // eslint-disable-next-line no-console
+    console.log(!this._config.allowDuplicates && $(`#${navId}`).length === 0)
+
+    if (!this._config.allowDuplicates && $(`#${navId}`).length > 0) {
+      return this.switchTab(`#${navId}`)
+    }
+
+    if ((!this._config.allowDuplicates && $(`#${navId}`).length === 0) || this._config.allowDuplicates) {
+      this.createTab(title, link, uniqueName, autoOpen)
+    }
   }
 
   switchTab(item) {
diff --git a/docs/javascript/iframe.md b/docs/javascript/iframe.md
index f959c1318..40c1c8d8a 100644
--- a/docs/javascript/iframe.md
+++ b/docs/javascript/iframe.md
@@ -51,6 +51,7 @@ $('.content-wrapper').IFrame({
   autoIframeMode: true,
   autoItemActive: true,
   autoShowNewTab: true,
+  allowDuplicates: true,
   loadingScreen: 750,
   useNavbarItems: true
 })
@@ -69,6 +70,7 @@ $('.content-wrapper').IFrame({
 |autoIframeMode | Boolean | true | Whether to automatically add `.iframe-mode` to `body` if page is loaded via iframe.
 |autoItemActive | Boolean | true | Whether to automatically set the sidebar menu item active based on the active iframe.
 |autoShowNewTab | Boolean | true | Whether to automatically display created tab.
+|allowDuplicates | Boolean | true | Whether to allow creation of duplicate tab/iframe.
 |loadingScreen | Boolean/Number | true | [Boolean] Whether to enable iframe loading screen; [Number] Set loading screen hide delay.
 |useNavbarItems | Boolean | true | Whether to open navbar menu items, instead of open only sidebar menu items.