diff --git a/deps/graph-parser/src/logseq/graph_parser.cljs b/deps/graph-parser/src/logseq/graph_parser.cljs
index 3edb1afb9..28d38b6c1 100644
--- a/deps/graph-parser/src/logseq/graph_parser.cljs
+++ b/deps/graph-parser/src/logseq/graph_parser.cljs
@@ -23,35 +23,41 @@
                       :as options}]
   (db-set-file-content! conn file content)
   (let [format (gp-util/get-format file)
-        file-content [{:file/path file}]
-        {:keys [tx ast]}
-        (if (contains? gp-config/mldoc-support-formats format)
-             (let [extract-options' (merge {:block-pattern (gp-config/get-block-pattern format)
-                                            :date-formatter "MMM do, yyyy"
-                                            :supported-formats (gp-config/supported-formats)}
-                                           extract-options
-                                           {:db @conn})
-                   {:keys [pages blocks ast]}
-                   (extract/extract file content extract-options')
-                   delete-blocks (delete-blocks-fn (first pages) file)
-                   block-ids (map (fn [block] {:block/uuid (:block/uuid block)}) blocks)
-                   block-refs-ids (->> (mapcat :block/refs blocks)
-                                       (filter (fn [ref] (and (vector? ref)
-                                                              (= :block/uuid (first ref)))))
-                                       (map (fn [ref] {:block/uuid (second ref)}))
-                                       (seq))
-                   ;; To prevent "unique constraint" on datascript
-                   block-ids (set/union (set block-ids) (set block-refs-ids))
-                   pages (extract/with-ref-pages pages blocks)
-                   pages-index (map #(select-keys % [:block/name]) pages)]
-               ;; does order matter?
-               {:tx (concat file-content pages-index delete-blocks pages block-ids blocks)
-                :ast ast})
-             {:tx file-content})
-        tx (concat tx [(cond-> {:file/path file}
-                               new?
-                               ;; TODO: use file system timestamp?
-                               (assoc :file/created-at (date-time-util/time-ms)))])]
+        file-content [(cond-> {:file/path file}
+                        new?
+                        ;; TODO: use file system timestamp?
+                        (assoc :file/created-at (date-time-util/time-ms)))]
+        extract-options' (merge {:block-pattern (gp-config/get-block-pattern format)
+                                 :date-formatter "MMM do, yyyy"
+                                 :supported-formats (gp-config/supported-formats)}
+                                extract-options
+                                {:db @conn})
+        {:keys [pages blocks ast]
+         :or   {pages []
+                blocks []
+                ast []}}
+        (cond (contains? gp-config/mldoc-support-formats format)
+              (extract/extract file content extract-options')
+
+              ;; File can be saved as plain edn (mostly, the whiteboard files)
+              (= format :edn)
+              (gp-util/safe-read-string content)
+
+              :else nil)
+
+        delete-blocks (delete-blocks-fn (first pages) file)
+        block-ids (map (fn [block] {:block/uuid (:block/uuid block)}) blocks)
+        block-refs-ids (->> (mapcat :block/refs blocks)
+                            (filter (fn [ref] (and (vector? ref)
+                                                   (= :block/uuid (first ref)))))
+                            (map (fn [ref] {:block/uuid (second ref)}))
+                            (seq))
+        ;; To prevent "unique constraint" on datascript
+        block-ids (set/union (set block-ids) (set block-refs-ids))
+        pages (extract/with-ref-pages pages blocks)
+        pages-index (map #(select-keys % [:block/name]) pages)
+
+        tx (concat file-content pages-index delete-blocks pages block-ids blocks)]
     {:tx
      (d/transact! conn (gp-util/remove-nils tx) (select-keys options [:new-graph? :from-disk?]))
      :ast ast}))
diff --git a/deps/graph-parser/src/logseq/graph_parser/util.cljs b/deps/graph-parser/src/logseq/graph_parser/util.cljs
index 8fc1a56d0..139e72317 100644
--- a/deps/graph-parser/src/logseq/graph_parser/util.cljs
+++ b/deps/graph-parser/src/logseq/graph_parser/util.cljs
@@ -2,7 +2,9 @@
   "Util fns shared between graph-parser and rest of app. Util fns only rely on
   clojure standard libraries."
   (:require [clojure.walk :as walk]
-            [clojure.string :as string]))
+            [clojure.string :as string]
+            [logseq.graph-parser.log :as log]
+            [clojure.reader :as reader]))
 
 (defn safe-re-find
   "Copy of frontend.util/safe-re-find. Too basic to couple to main app"
@@ -153,3 +155,11 @@
   [file]
   (when file
     (normalize-format (keyword (string/lower-case (last (string/split file #"\.")))))))
+
+(defn safe-read-string
+  [content]
+  (try
+    (reader/read-string content)
+    (catch :default e
+      (log/error :parse/read-string-failed e)
+      {})))
diff --git a/src/main/frontend/modules/file/core.cljs b/src/main/frontend/modules/file/core.cljs
index cee86762d..44566b25f 100644
--- a/src/main/frontend/modules/file/core.cljs
+++ b/src/main/frontend/modules/file/core.cljs
@@ -153,7 +153,7 @@
         files [[file-path new-content]]]
     (push-to-write-chan files)))
 
-(defn save-tree
+(defn save-tree!
   [page-block tree]
   {:pre [(map? page-block)]}
   (let [ok-handler #(save-tree-aux! page-block tree)
diff --git a/src/main/frontend/modules/outliner/file.cljs b/src/main/frontend/modules/outliner/file.cljs
index 1fefd00de..02dff5f23 100644
--- a/src/main/frontend/modules/outliner/file.cljs
+++ b/src/main/frontend/modules/outliner/file.cljs
@@ -31,7 +31,7 @@
                    (nil? (:block/file page-block)))
       (let [tree (tree/blocks->vec-tree repo blocks (:block/name page-block))]
         (if page-block
-          (file/save-tree page-block tree)
+          (file/save-tree! page-block tree)
           (js/console.error (str "can't find page id: " page-db-id)))))))
 
 (defn write-files!
diff --git a/src/main/frontend/modules/outliner/whiteboard.cljs b/src/main/frontend/modules/outliner/whiteboard.cljs
new file mode 100644
index 000000000..a6243dad8
--- /dev/null
+++ b/src/main/frontend/modules/outliner/whiteboard.cljs
@@ -0,0 +1 @@
+(ns frontend.modules.outliner.whiteboard)
diff --git a/src/test/frontend/modules/file/core_test.cljs b/src/test/frontend/modules/file/core_test.cljs
new file mode 100644
index 000000000..d3b77f8a6
--- /dev/null
+++ b/src/test/frontend/modules/file/core_test.cljs
@@ -0,0 +1,12 @@
+(ns frontend.modules.file.core-test
+  (:require [cljs.test :refer [use-fixtures] :as test]
+            [frontend.test.fixtures :as fixtures]
+            [frontend.test.helper :as helper]))
+
+
+(def test-db helper/test-db)
+
+(use-fixtures :each
+  fixtures/load-test-env
+  fixtures/react-components
+  fixtures/reset-db)