diff --git a/client/api/misc.js b/client/api/misc.js
index 0ece914b..696e71cb 100644
--- a/client/api/misc.js
+++ b/client/api/misc.js
@@ -1,12 +1,15 @@
 import wsc from './webSocketConnection';
 
 class Misc {
-    async loadConfig() {
+    async loadConfig(_configHash) {
 
-        const query = {params: [
-            'name', 'version', 'mode', 'maxUploadFileSize', 'useExternalBookConverter',
-            'acceptFileExt', 'bucEnabled', 'branch', 'networkLibraryLink', 'restricted'
-        ]};
+        const query = {
+            params: [
+                'name', 'version', 'mode', 'maxUploadFileSize', 'useExternalBookConverter',
+                'acceptFileExt', 'bucEnabled', 'branch', 'networkLibraryLink', 'restricted'
+            ],
+            _configHash,
+        };
 
         const config = await wsc.message(await wsc.send(Object.assign({action: 'get-config'}, query)));
         if (config.error)
diff --git a/client/components/App.vue b/client/components/App.vue
index 99c4ca0a..1b76c6f2 100644
--- a/client/components/App.vue
+++ b/client/components/App.vue
@@ -154,8 +154,11 @@ class App {
         (async() => {
             //загрузим конфиг сервера
             try {
-                const config = await miscApi.loadConfig();
-                this.commit('config/setConfig', config);
+                const config = await miscApi.loadConfig(this.config._configHash);
+
+                if (!config._useCached)
+                    this.commit('config/setConfig', config);
+
                 this.showPage = true;
             } catch(e) {
                 //проверим, не получен ли конфиг ранее
diff --git a/client/store/modules/config.js b/client/store/modules/config.js
index 32852f7f..41a3ad92 100644
--- a/client/store/modules/config.js
+++ b/client/store/modules/config.js
@@ -1,4 +1,3 @@
-import miscApi from '../../api/misc';
 // initial state
 const state = {
     name: null,
diff --git a/server/controllers/WebSocketController.js b/server/controllers/WebSocketController.js
index c17aa98d..c0f5606a 100644
--- a/server/controllers/WebSocketController.js
+++ b/server/controllers/WebSocketController.js
@@ -20,6 +20,8 @@ class WebSocketController {
         this.readerWorker = new ReaderWorker(config);
         this.workerState = new WorkerState();
 
+        this.configHash = '';
+
         if (config.bucEnabled) {
             this.bucClient = new BUCClient(config);
         }
@@ -119,8 +121,22 @@ class WebSocketController {
     async getConfig(req, ws) {
         if (Array.isArray(req.params)) {
             const paramsSet = new Set(req.params);
+            const _configHash = req._configHash;
 
-            this.send(_.pick(this.config, this.config.webConfigParams.filter(x => paramsSet.has(x))), req, ws);
+            let response = {_useCached: true};
+
+            //оптимизация, чтобы не отдавал большой конфиг каждый раз при обновлении страницы
+            if (!_configHash || _configHash !== this.configHash) {
+                if (!this.configHash) {
+                    const webConfig = _.pick(this.config, this.config.webConfigParams);
+                    this.configHash = await utils.getBufHash(Buffer.from(JSON.stringify(webConfig)), 'sha256', 'hex');
+                }
+
+                response = _.pick(this.config, this.config.webConfigParams.filter(x => paramsSet.has(x)));
+                response._configHash = this.configHash;
+            }
+
+            this.send(response, req, ws);
         } else {
             throw new Error('params is not an array');
         }