diff --git a/snowpack.config.js b/snowpack.config.js
index e61b9af..1cdead0 100644
--- a/snowpack.config.js
+++ b/snowpack.config.js
@@ -21,7 +21,7 @@ module.exports = {
   devOptions: {
     open: "none",
   },
-  alias: { "@assets": "./src/assets" },
+  alias: { "@assets": "./src/assets", "@utils": "./src/utils" },
   exclude: ["**/node_modules/**/*", "**/*.test.*"],
   env: {
     // API_URL: "https://publitebackend.dmitriy.icu",
diff --git a/src/UploadForm/index.tsx b/src/UploadForm/index.tsx
index 85d2949..83c5034 100644
--- a/src/UploadForm/index.tsx
+++ b/src/UploadForm/index.tsx
@@ -3,6 +3,7 @@ import React, { useState } from "react";
 import plusIcon from "@assets/plus.svg";
 import styles from "./UploadForm.module.css";
 import { submitFile, validateResponse, validState } from "../api";
+import { saveBook } from "@utils/localStorage";
 
 export const UploadForm = () => {
   const [error, setError] = useState("");
@@ -17,8 +18,10 @@ export const UploadForm = () => {
         const res = await submitFile(file);
         setLoading(false);
 
+        console.log(validateResponse(res));
+
         if (validateResponse(res)) {
-          // TODO: save book to localstorage
+          saveBook(res, res.hash || Date.now().toString());
           // TODO: redirect to main menu
         }
       }
diff --git a/src/types/book.ts b/src/types/book.ts
index 1c267d9..3463afe 100644
--- a/src/types/book.ts
+++ b/src/types/book.ts
@@ -1,10 +1,9 @@
 export const requiredBookProps = ["title", "author", "content"] as const;
 export const optionalBookProps = ["cover", "hash"] as const;
 
-export type IBook =
-  | {
-      [key in typeof requiredBookProps[number]]: string;
-    }
-  | {
-      [key in typeof optionalBookProps[number]]: string | undefined;
-    };
+export type IBook = {
+  [key in typeof requiredBookProps[number]]: string;
+} &
+  {
+    [key in typeof optionalBookProps[number]]: string | undefined;
+  };
diff --git a/src/types/utils.ts b/src/types/utils.ts
new file mode 100644
index 0000000..d1e430b
--- /dev/null
+++ b/src/types/utils.ts
@@ -0,0 +1,7 @@
+export const isArrOfStr = (obj: unknown): obj is string[] => {
+  if (Array.isArray(obj)) {
+    for (const el of obj) if (typeof el !== "string") return false;
+    return true;
+  }
+  return false;
+};
diff --git a/src/utils/localStorage.ts b/src/utils/localStorage.ts
new file mode 100644
index 0000000..e6c033d
--- /dev/null
+++ b/src/utils/localStorage.ts
@@ -0,0 +1,14 @@
+import { IBook } from "../types/book";
+import { isArrOfStr } from "../types/utils";
+
+export const saveBook = (bookObj: IBook, key: string): void => {
+  const bookListStr = localStorage.getItem("list") || "[]";
+  const bookList: unknown = JSON.parse(bookListStr);
+
+  if (isArrOfStr(bookList) && !bookList.includes(key)) {
+    const newBookList = [key, ...bookList];
+
+    localStorage.setItem("list", JSON.stringify(newBookList));
+    localStorage.setItem(key, JSON.stringify(bookObj));
+  }
+};
diff --git a/tsconfig.json b/tsconfig.json
index 99b7415..f1ae2a6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -10,6 +10,6 @@
     "module": "ES2020",
     "moduleResolution": "node",
     "resolveJsonModule": true,
-    "paths": { "@assets/*": ["src/assets/*"] }
+    "paths": { "@assets/*": ["./src/assets/*"], "@utils/*": ["./src/utils/*"] }
   }
 }