diff --git a/components/header.js b/components/header.js
index 04ff05e..1028520 100644
--- a/components/header.js
+++ b/components/header.js
@@ -21,6 +21,7 @@ export class Header extends HTMLElement {
   textEn = {
     download: 'Download',
     rename: 'Move/Rename',
+    duplicate: 'Duplicate',
     delete: 'Delete',
     confirmDelete: f => (
       `Are you sure you want to delete ${f}?`
@@ -36,6 +37,7 @@ export class Header extends HTMLElement {
   textEs = {
     download: 'Descargar',
     rename: 'Mover/Renombrar',
+    duplicate: 'Duplicar',
     delete: 'Borrar',
     confirmDelete: f => (
       `¿Desea borrar ${f}?`
@@ -253,6 +255,45 @@ export class Header extends HTMLElement {
       dialog.footerEl.appendChild(bGroup)
       dialog.open()
     })
+    this.pageMenu.add(this.text.duplicate, () => {
+      const dialog = document.createElement(
+        'm-dialog'
+      )
+      this.dialogWrap.replaceChildren(dialog)
+      const input = document.createElement('input')
+      input.value = this.path
+      input.style.minWidth = '300px'
+      dialog.bodyEl.appendChild(input)
+      let errorEl
+      const bGroup = document.createElement(
+        'm-forms-button-group'
+      )
+      bGroup.addPrimary(this.text.duplicate, () => {
+        const newPath = input.value
+        const v = localStorage.getItem(newPath)
+        if (v !== null || newPath === this.path) {
+          if (!errorEl) {
+            errorEl = document.createElement('p')
+            errorEl.style.color = 'red'
+            const errText = this.text.alreadyExists
+            errorEl.innerText = errText
+            dialog.bodyEl.appendChild(errorEl)
+          }
+          return
+        }
+        localStorage.setItem(
+          newPath,
+          localStorage.getItem(this.path)
+        )
+        dialog.close()
+        location.hash = newPath
+      })
+      bGroup.addCancel(this.text.cancel, () => {
+        dialog.close()
+      })
+      dialog.footerEl.appendChild(bGroup)
+      dialog.open()
+    })
     this.pageMenu.add(this.text.delete, () => {
       const dialog = document.createElement(
         'm-dialog'
diff --git a/sw.js b/sw.js
index 15ff0a6..e3804c0 100644
--- a/sw.js
+++ b/sw.js
@@ -17,7 +17,7 @@ async function initCache() {
     '/loader/builder.js',
     '/loader/editor-build.js',
     '/menu/dropdown.js',
-  ]) //2
+  ]) //3
 }
 
 self.addEventListener("install", event => {