diff --git a/src/components/article.tsx b/src/components/article.tsx
index 69ec69a..e779fc2 100644
--- a/src/components/article.tsx
+++ b/src/components/article.tsx
@@ -12,7 +12,11 @@ import {
     Icon,
     Link,
 } from "@fluentui/react"
-import { RSSSource, SourceOpenTarget, SourceTextDirection } from "../scripts/models/source"
+import {
+    RSSSource,
+    SourceOpenTarget,
+    SourceTextDirection,
+} from "../scripts/models/source"
 import { shareSubmenu } from "./context-menu"
 import { platformCtrl, decodeFetchResponse } from "../scripts/utils"
 
@@ -95,8 +99,8 @@ class Article extends React.Component<ArticleProps, ArticleState> {
             text: font === "" ? intl.get("default") : font,
             canCheck: true,
             checked: this.state.fontFamily === font,
-            onClick: () => this.setFont(font)
-        }))
+            onClick: () => this.setFont(font),
+        })),
     })
 
     updateTextDirection = (direction: SourceTextDirection) => {
@@ -111,7 +115,8 @@ class Article extends React.Component<ArticleProps, ArticleState> {
                 iconProps: { iconName: "Forward" },
                 canCheck: true,
                 checked: this.props.source.textDir === SourceTextDirection.LTR,
-                onClick: () => this.updateTextDirection(SourceTextDirection.LTR),
+                onClick: () =>
+                    this.updateTextDirection(SourceTextDirection.LTR),
             },
             {
                 key: "RTL",
@@ -119,17 +124,20 @@ class Article extends React.Component<ArticleProps, ArticleState> {
                 iconProps: { iconName: "Back" },
                 canCheck: true,
                 checked: this.props.source.textDir === SourceTextDirection.RTL,
-                onClick: () => this.updateTextDirection(SourceTextDirection.RTL),
+                onClick: () =>
+                    this.updateTextDirection(SourceTextDirection.RTL),
             },
             {
                 key: "Vertical",
                 text: intl.get("article.Vertical"),
                 iconProps: { iconName: "Down" },
                 canCheck: true,
-                checked: this.props.source.textDir === SourceTextDirection.Vertical,
-                onClick: () => this.updateTextDirection(SourceTextDirection.Vertical),
+                checked:
+                    this.props.source.textDir === SourceTextDirection.Vertical,
+                onClick: () =>
+                    this.updateTextDirection(SourceTextDirection.Vertical),
             },
-        ]
+        ],
     })
 
     moreMenuProps = (): IContextualMenuProps => ({
@@ -354,13 +362,9 @@ class Article extends React.Component<ArticleProps, ArticleState> {
                 </>
             )
         )
-        return `article/article.html?a=${a}&h=${h}&f=${
-            encodeURIComponent(this.state.fontFamily)
-        }&s=${
-            this.state.fontSize
-        }&d=${
-            this.props.source.textDir
-        }&u=${
+        return `article/article.html?a=${a}&h=${h}&f=${encodeURIComponent(
+            this.state.fontFamily
+        )}&s=${this.state.fontSize}&d=${this.props.source.textDir}&u=${
             this.props.item.link
         }&m=${this.state.loadFull ? 1 : 0}`
     }
diff --git a/src/components/settings/app.tsx b/src/components/settings/app.tsx
index 4279698..a5c6f68 100644
--- a/src/components/settings/app.tsx
+++ b/src/components/settings/app.tsx
@@ -20,7 +20,6 @@ import {
     DefaultButton,
     ChoiceGroup,
     IChoiceGroupOption,
-    loadTheme,
     Dropdown,
     IDropdownOption,
     PrimaryButton,
diff --git a/src/containers/article-container.tsx b/src/containers/article-container.tsx
index c09d7df..0a7ae8b 100644
--- a/src/containers/article-container.tsx
+++ b/src/containers/article-container.tsx
@@ -17,7 +17,11 @@ import {
     closeContextMenu,
     openImageMenu,
 } from "../scripts/models/app"
-import { RSSSource, SourceTextDirection, updateSource } from "../scripts/models/source"
+import {
+    RSSSource,
+    SourceTextDirection,
+    updateSource,
+} from "../scripts/models/source"
 
 type ArticleContainerProps = {
     itemId: number
diff --git a/src/index.tsx b/src/index.tsx
index cce7bfb..cb98426 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -27,7 +27,7 @@ window.utils.addMainContextListener((pos, text) => {
 })
 
 window.fontList = [""]
-window.utils.initFontList().then((fonts) => {
+window.utils.initFontList().then(fonts => {
     window.fontList.push(...fonts)
 })
 
diff --git a/src/main/utils.ts b/src/main/utils.ts
index bd50ece..bcd1715 100644
--- a/src/main/utils.ts
+++ b/src/main/utils.ts
@@ -1,16 +1,9 @@
-import {
-    ipcMain,
-    shell,
-    dialog,
-    app,
-    session,
-    clipboard,
-} from "electron"
+import { ipcMain, shell, dialog, app, session, clipboard } from "electron"
 import { WindowManager } from "./window"
 import fs = require("fs")
 import { ImageCallbackTypes, TouchBarTexts } from "../schema-types"
 import { initMainTouchBar } from "./touchbar"
-import fontList = require('font-list')
+import fontList = require("font-list")
 
 export function setUtilsListeners(manager: WindowManager) {
     async function openExternal(url: string, background = false) {
@@ -28,9 +21,12 @@ export function setUtilsListeners(manager: WindowManager) {
     }
 
     app.on("web-contents-created", (_, contents) => {
-        contents.setWindowOpenHandler((details) => {
+        contents.setWindowOpenHandler(details => {
             if (contents.getType() === "webview")
-                openExternal(details.url, details.disposition === "background-tab")
+                openExternal(
+                    details.url,
+                    details.disposition === "background-tab"
+                )
             return {
                 action: manager.hasWindow() ? "deny" : "allow",
             }
diff --git a/src/scripts/i18n/README.md b/src/scripts/i18n/README.md
index 97813ad..5cf0889 100644
--- a/src/scripts/i18n/README.md
+++ b/src/scripts/i18n/README.md
@@ -18,5 +18,6 @@ Currently, Fluent Reader supports the following languages.
 | nl | Nederlands | [@Vistaus](https://github.com/Vistaus) |
 | it | Italiano | [@andrewasd](https://github.com/andrewasd) |
 | pt-BR | Português do Brasil | [@fabianski7](https://github.com/fabianski7) |
+| ko | 한글 | [@1drive](https://github.com/1drive) |
 
 Refer to the repo of [react-intl-universal](https://github.com/alibaba/react-intl-universal) to get started on internationalization. 
diff --git a/src/scripts/models/source.ts b/src/scripts/models/source.ts
index 583cf7a..66ed585 100644
--- a/src/scripts/models/source.ts
+++ b/src/scripts/models/source.ts
@@ -491,7 +491,7 @@ export function sourceReducer(
             }
         case MARK_ALL_READ: {
             let nextState = { ...state }
-            action.sids.forEach((sid) => {
+            action.sids.forEach(sid => {
                 nextState[sid] = {
                     ...state[sid],
                     unreadCount: action.time ? state[sid].unreadCount : 0,
diff --git a/webpack.config.js b/webpack.config.js
index 5492a13..0b995a3 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -24,7 +24,7 @@ module.exports = [
             filename: "electron.js",
         },
         node: {
-            __dirname: false
+            __dirname: false,
         },
         plugins: [new HardSourceWebpackPlugin()],
     },