diff --git a/package-lock.json b/package-lock.json
index 2e7e4a0..0e6bc9f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "dependencies": {
         "@codemirror/lang-javascript": "^6.1.1",
         "@codemirror/theme-one-dark": "^6.1.0",
-        "@gkucmierz/utils": "^1.12.1",
+        "@gkucmierz/utils": "^1.15.0",
         "codemirror": "^6.0.1",
         "copy-to-clipboard": "^3.3.3",
         "eventemitter3": "^4.0.7",
@@ -1878,9 +1878,9 @@
       }
     },
     "node_modules/@gkucmierz/utils": {
-      "version": "1.12.1",
-      "resolved": "https://registry.npmjs.org/@gkucmierz/utils/-/utils-1.12.1.tgz",
-      "integrity": "sha512-oP/4FMdP3h+fKh+Rpv3SB2F5K5DmOsMh4AuiKu8uWUtw1LkIy18JS7qzcKH0258iBg/zhXvhgcOI0LGuffsUCA=="
+      "version": "1.15.0",
+      "resolved": "https://registry.npmjs.org/@gkucmierz/utils/-/utils-1.15.0.tgz",
+      "integrity": "sha512-Z2geakuU4cQQ0QhFaID0vN1u4lzHNpn9CHv/c/zkko8YXho80rEbjm301NaKKch62z+7FND4O7yh+SQVh4isRg=="
     },
     "node_modules/@humanwhocodes/config-array": {
       "version": "0.11.6",
@@ -7585,9 +7585,9 @@
       }
     },
     "@gkucmierz/utils": {
-      "version": "1.12.1",
-      "resolved": "https://registry.npmjs.org/@gkucmierz/utils/-/utils-1.12.1.tgz",
-      "integrity": "sha512-oP/4FMdP3h+fKh+Rpv3SB2F5K5DmOsMh4AuiKu8uWUtw1LkIy18JS7qzcKH0258iBg/zhXvhgcOI0LGuffsUCA=="
+      "version": "1.15.0",
+      "resolved": "https://registry.npmjs.org/@gkucmierz/utils/-/utils-1.15.0.tgz",
+      "integrity": "sha512-Z2geakuU4cQQ0QhFaID0vN1u4lzHNpn9CHv/c/zkko8YXho80rEbjm301NaKKch62z+7FND4O7yh+SQVh4isRg=="
     },
     "@humanwhocodes/config-array": {
       "version": "0.11.6",
diff --git a/package.json b/package.json
index 0440d69..82b0ffa 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "dependencies": {
     "@codemirror/lang-javascript": "^6.1.1",
     "@codemirror/theme-one-dark": "^6.1.0",
-    "@gkucmierz/utils": "^1.12.1",
+    "@gkucmierz/utils": "^1.15.0",
     "codemirror": "^6.0.1",
     "copy-to-clipboard": "^3.3.3",
     "eventemitter3": "^4.0.7",
diff --git a/src/components/ShareModal.vue b/src/components/ShareModal.vue
index f5d454a..86055de 100644
--- a/src/components/ShareModal.vue
+++ b/src/components/ShareModal.vue
@@ -6,7 +6,6 @@ import PrimeButton from 'primevue/button';
 
 import copy from 'copy-to-clipboard';
 
-import { APP_URL, SHARE_CODE_ROUTE_NAME } from '../app.config';
 import ModalWindow from './ModalWindow.vue';
 import codeService from '../services/codeService';
 
@@ -27,7 +26,7 @@ export default defineComponent({
   },
   methods: {
     encode(code) {
-      return [APP_URL, SHARE_CODE_ROUTE_NAME, btoa(code)].join('/');
+      return codeService.codeToUrl(code);
     },
     copy() {
       copy(this.encode(this.code));
diff --git a/src/services/codeService.mjs b/src/services/codeService.mjs
index 9a8a463..a7ae2f7 100644
--- a/src/services/codeService.mjs
+++ b/src/services/codeService.mjs
@@ -4,6 +4,8 @@ import {
   STORAGE_KEY_CODE,
 } from '../app.config';
 import EventEmitter from 'eventemitter3';
+import { toBase64, fromBase64 } from '@gkucmierz/utils/src/base64';
+import { APP_URL, SHARE_CODE_ROUTE_NAME } from '../app.config';
 
 const ee = new EventEmitter();
 let code;
@@ -23,7 +25,10 @@ const codeService = {
     ee.emit('change', code);
   },
   setFromUrl(_encoded) {
-    this.change(atob(_encoded));
+    this.change(fromBase64(_encoded));
+  },
+  codeToUrl(_code = code) {
+    return [APP_URL, SHARE_CODE_ROUTE_NAME, toBase64(_code)].join('/');
   },
   ee,
 };