diff --git a/snippets/docs/uncheck-checklist/appsscript.json b/snippets/docs/uncheck-checklist/appsscript.json
new file mode 100644
index 0000000..6e03377
--- /dev/null
+++ b/snippets/docs/uncheck-checklist/appsscript.json
@@ -0,0 +1,12 @@
+{
+  "timeZone": "Europe/Moscow",
+  "dependencies": {
+    "enabledAdvancedServices": [{
+      "userSymbol": "Docs",
+      "serviceId": "docs",
+      "version": "v1"
+    }]
+  },
+  "exceptionLogging": "STACKDRIVER",
+  "runtimeVersion": "V8"
+}
\ No newline at end of file
diff --git a/snippets/docs/uncheck-checklist/config.json b/snippets/docs/uncheck-checklist/config.json
new file mode 100644
index 0000000..8899331
--- /dev/null
+++ b/snippets/docs/uncheck-checklist/config.json
@@ -0,0 +1,4 @@
+{
+  "type": "container-bound-doc",
+  "src": []
+}
diff --git a/snippets/docs/uncheck-checklist/index.js b/snippets/docs/uncheck-checklist/index.js
new file mode 100644
index 0000000..fa8569a
--- /dev/null
+++ b/snippets/docs/uncheck-checklist/index.js
@@ -0,0 +1,17 @@
+/**
+ * Check/uncheck the entire checklist in the Document
+ *
+ * @param {GoogleAppsScript.Document.Document} doc A Document
+ * @param {string} index The checklist id
+ */
+function uncheckListById_(doc, id) {
+  const body = doc.getBody();
+  const lists = body.getListItems().filter((l) => l.getListId() === id);
+  const last = lists.splice(-1)[0];
+  lists.reverse().forEach((item) => {
+    const copy = last.copy();
+    copy.asListItem().setText(item.asListItem().getText());
+    body.insertListItem(body.getChildIndex(item), copy);
+    item.removeFromParent();
+  });
+}
diff --git a/snippets/docs/uncheck-checklist/readme.md b/snippets/docs/uncheck-checklist/readme.md
new file mode 100644
index 0000000..0957e7d
--- /dev/null
+++ b/snippets/docs/uncheck-checklist/readme.md
@@ -0,0 +1,39 @@
+---
+title: 'Uncheck a checklist'
+date: '2021-07-09'
+description: 'Check/uncheck the entire checklist in Google Documents.'
+tags: ['docs']
+categories: ['snippets']
+images: ['./snippets/sheets/uncheck-checklist/screenshot.png']
+---
+
+## Check/uncheck the entire checklist in Google Documents
+
+{{< toc >}}
+
+<video controls width="100%" height="350px" autoplay="true" loop="true">
+    <source src="./screenrecord.mp4"  type="video/mp4">
+    Sorry, your browser doesn't support embedded videos.
+</video>
+
+Currently it is unknown if the checklist can be manipulated in Docs. [Clark Lind](https://groups.google.com/g/google-apps-script-community/c/Gl0hcbM0xM8/m/cqsL1krtAAAJ) suggests to replace a list item with a copy of one of them (which is in expected state -- check/uncheck). We need to know the `id` -- see `printListIds()` -- of the list in order to be able to change it. And also we need to know which element is in the right state. The code used the last one.
+
+> **Important**. The code does not support paragraph deep copying.
+
+### Snippet
+
+- {{< externalLink >}}
+- {{< commentLink >}}
+- {{< scrvizLink >}}
+
+{{< codeFromFile "index.js" >}}
+
+### Run it
+
+{{< codeFromFile "run.js" >}}
+
+### Ui triggers
+
+{{< codeFromFile "triggerActions.js" >}}
+
+{{< clipboard >}}
diff --git a/snippets/docs/uncheck-checklist/run.js b/snippets/docs/uncheck-checklist/run.js
new file mode 100644
index 0000000..4a7cba0
--- /dev/null
+++ b/snippets/docs/uncheck-checklist/run.js
@@ -0,0 +1,31 @@
+/* global uncheckListById_ */
+
+/**
+ * Run the snippet
+ */
+function run() {
+  uncheckListById_(DocumentApp.getActiveDocument(), 'kix.yy1s6bgaip7h');
+}
+
+/**
+ * Prints ids of lists in the current Document
+ */
+function printListIds() {
+  console.log(getListIds_(DocumentApp.getActiveDocument()));
+}
+
+/**
+ * Gets ids of lists in the current Document
+ *
+ * @param {globalThis.DocumentApp.Document} doc
+ */
+function getListIds_(doc) {
+  return doc
+    .getBody()
+    .getListItems()
+    .reduce((a, c) => {
+      const id = c.getListId();
+      if (a.indexOf(id) === -1) a.push(id);
+      return a;
+    }, []);
+}
diff --git a/snippets/docs/uncheck-checklist/screenrecord.mp4 b/snippets/docs/uncheck-checklist/screenrecord.mp4
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index 0000000..d2bd4e7
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diff --git a/snippets/docs/uncheck-checklist/screenshot.png b/snippets/docs/uncheck-checklist/screenshot.png
new file mode 100644
index 0000000..5ad461e
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diff --git a/snippets/docs/uncheck-checklist/triggerActions.js b/snippets/docs/uncheck-checklist/triggerActions.js
new file mode 100644
index 0000000..4b0b718
--- /dev/null
+++ b/snippets/docs/uncheck-checklist/triggerActions.js
@@ -0,0 +1,9 @@
+/**
+ * Creates the user menu for handy use.
+ */
+function onOpen() {
+  DocumentApp.getUi()
+    .createMenu('Checklists')
+    .addItem('Mark the list as its last item', 'run')
+    .addToUi();
+}