diff --git a/src/boot/after_store.js b/src/boot/after_store.js
index b87ff8924..a3f22560e 100644
--- a/src/boot/after_store.js
+++ b/src/boot/after_store.js
@@ -34,6 +34,7 @@ import { useInstanceCapabilitiesStore } from 'src/stores/instance_capabilities.j
 import { useInterfaceStore } from 'src/stores/interface.js'
 import { useOAuthStore } from 'src/stores/oauth'
 import { useSyncConfigStore } from 'src/stores/sync_config.js'
+import { useLocalConfigStore } from 'src/stores/local_config.js'
 
 import VBodyScrollLock from 'src/directives/body_scroll_lock'
 import {
@@ -523,6 +524,8 @@ const afterStoreSetup = async ({ pinia, store, storageError, i18n }) => {
 
   useInterfaceStore().setLayoutWidth(windowWidth())
   useInterfaceStore().setLayoutHeight(windowHeight())
+  window.syncConfig = useSyncConfigStore()
+  window.localConfig = useLocalConfigStore()
 
   FaviconService.initFaviconService()
   initServiceWorker(store)
diff --git a/src/stores/local_config.js b/src/stores/local_config.js
new file mode 100644
index 000000000..78754f07b
--- /dev/null
+++ b/src/stores/local_config.js
@@ -0,0 +1,53 @@
+import {
+  cloneDeep,
+  set,
+} from 'lodash'
+import { defineStore } from 'pinia'
+import { toRaw } from 'vue'
+
+import { useInstanceStore } from 'src/stores/instance'
+
+import { defaultState as configDefaultState } from 'src/modules/default_config_state'
+
+export const defaultState = {
+  prefsStorage: {
+    ...configDefaultState,
+  }
+}
+
+export const useLocalConfigStore = defineStore('local_config', {
+  state() {
+    return cloneDeep(defaultState)
+  },
+  actions: {
+    set({ path, value }) {
+      set(this.prefsStorage, path, value)
+    },
+    unset({ path, value }) {
+      set(this.prefsStorage, path, undefined)
+    },
+    clearSyncConfig() {
+      const blankState = { ...cloneDeep(defaultState) }
+      Object.keys(this).forEach((k) => {
+        this.prefsStorage[k] = blankState[k]
+      })
+    },
+  },
+  getters: {
+    mergedConfig: (state) => {
+      const instancePrefs = useInstanceStore().prefsStorage
+      const result = Object.fromEntries(
+        Object.entries(state.prefsStorage).map(([k, v]) => [
+          k,
+          v ?? instancePrefs[k],
+        ]),
+      )
+      return result
+    },
+  },
+  persist: {
+    afterLoad(state) {
+      return state
+    },
+  },
+})