diff --git a/app/js/tl/filter.js b/app/js/tl/filter.js
index ca5c1d51..61878950 100644
--- a/app/js/tl/filter.js
+++ b/app/js/tl/filter.js
@@ -514,7 +514,6 @@ function resetNotfFilter(tlid) {
 }
 function notfFilter(id, tlid, acct_id) {
 	var excludetxt = localStorage.getItem('exclude-' + tlid)
-	console.log(excludetxt)
 	if (excludetxt || excludetxt != '') {
 		excludetxt = excludetxt + '&account_id=' + id
 	} else {
diff --git a/app/main.js b/app/main.js
index a21a9ad3..17756c89 100644
--- a/app/main.js
+++ b/app/main.js
@@ -12,7 +12,6 @@ const np = require('./main/np.js')
 const systemFunc = require('./main/system.js')
 const Menu = electron.Menu
 const join = require('path').join
-const windowStateKeeper = require('electron-window-state')
 
 // アプリケーションをコントロールするモジュール
 const app = electron.app
@@ -59,10 +58,10 @@ if (process.argv.indexOf('--dev') === -1) {
 	console.log('Welcome!')
 }
 var info_path = join(app.getPath('userData'), 'window-size.json')
+var max_info_path = join(app.getPath('userData'), 'max-window-size.json')
 var lang_path = join(app.getPath('userData'), 'language')
 var ha_path = join(app.getPath('userData'), 'hardwareAcceleration')
 var ua_path = join(app.getPath('userData'), 'useragent')
-
 try {
 	fs.readFileSync(ha_path, 'utf8')
 	app.disableHardwareAcceleration()
@@ -70,6 +69,26 @@ try {
 } catch {
 	if (!packaged) console.log('enabled: Hardware Acceleration')
 }
+var window_size
+try {
+	window_size = JSON.parse(fs.readFileSync(info_path, 'utf8'))
+} catch (e) {
+	window_size = {
+		width: 1000,
+		height: 750
+	} // デフォルトバリュー
+}
+var max_window_size
+try {
+	max_window_size = JSON.parse(fs.readFileSync(max_info_path, 'utf8'))
+} catch (e) {
+	max_window_size = {
+		width: 'string',
+		height: 'string',
+		x: 'string',
+		y: 'string'
+	} // デフォルトバリュー
+}
 function isFile(file) {
 	try {
 		fs.statSync(file)
@@ -84,10 +103,6 @@ app.on('window-all-closed', function() {
 	app.quit()
 })
 function createWindow() {
-	let window_size = windowStateKeeper({
-		defaultWidth: 1000,
-		defaultHeight: 750
-	  })
 	if (isFile(lang_path)) {
 		var lang = fs.readFileSync(lang_path, 'utf8')
 	} else {
@@ -162,7 +177,7 @@ function createWindow() {
 	mainWindow = new BrowserWindow(arg)
 	mainWindow.once('page-title-updated', () => {
 		mainWindow.show()
-		if (window_size.isMaximized) {
+		if (window_size.max) {
 			mainWindow.maximize()
 		}
 	})
@@ -200,7 +215,9 @@ function createWindow() {
 				.substring(0, N)
 	}
 	mainWindow.loadURL(base + lang + '/index.html' + plus, { userAgent: ua })
-	window_size.manage(mainWindow)
+	if (!window_size.x && !window_size.y) {
+		mainWindow.center()
+	}
 	// ウィンドウが閉じられたらアプリも終了
 	mainWindow.on('closed', function() {
 		electron.ipcMain.removeAllListeners()
@@ -208,6 +225,7 @@ function createWindow() {
 	})
 	closeArg = false
 	mainWindow.on('close', function(e, arg) {
+		writePos(mainWindow)
 		if (!closeArg) {
 			e.preventDefault()
 		}
@@ -226,7 +244,36 @@ function createWindow() {
 		closeArg = true
 		mainWindow.close()
 	})
+	function writePos(mainWindow) {
+		if (
+			max_window_size.width == mainWindow.getBounds().width &&
+			max_window_size.height == mainWindow.getBounds().height &&
+			max_window_size.x == mainWindow.getBounds().x &&
+			max_window_size.y == mainWindow.getBounds().y
+		) {
+			var size = {
+				width: mainWindow.getBounds().width,
+				height: mainWindow.getBounds().height,
+				x: mainWindow.getBounds().x,
+				y: mainWindow.getBounds().y,
+				max: true
+			}
+		} else {
+			var size = {
+				width: mainWindow.getBounds().width,
+				height: mainWindow.getBounds().height,
+				x: mainWindow.getBounds().x,
+				y: mainWindow.getBounds().y
+			}
+		}
+		fs.writeFileSync(info_path, JSON.stringify(size))
+	}
+	mainWindow.on('maximize', function() {
+		writePos(mainWindow)
+		fs.writeFileSync(max_info_path, JSON.stringify(mainWindow.getBounds()))
+	})
 	mainWindow.on('minimize', function() {
+		writePos(mainWindow)
 		mainWindow.webContents.send('asRead', '')
 	})
 
diff --git a/app/main/system.js b/app/main/system.js
index 01373b37..a671f241 100644
--- a/app/main/system.js
+++ b/app/main/system.js
@@ -1,313 +1,301 @@
 function system(mainWindow, dir, lang, dirname) {
-	const electron = require('electron')
-	const app = electron.app
-	const join = require('path').join
-	var Jimp = require('jimp')
-	const fs = require('fs')
-	var JSON5 = require('json5')
-	var ipc = electron.ipcMain
-	const clipboard = electron.clipboard
-	var tmp_img = join(app.getPath('userData'), 'tmp.png')
-	var ha_path = join(app.getPath('userData'), 'hardwareAcceleration')
-	var ua_path = join(app.getPath('userData'), 'useragent')
-	var lang_path = join(app.getPath('userData'), 'language')
-	var log_dir_path = join(app.getPath('userData'), 'logs')
+	const electron = require("electron");
+	const app = electron.app;
+	const join = require("path").join;
+	var Jimp = require("jimp");
+	const fs = require("fs");
+	var JSON5 = require("json5");
+	var ipc = electron.ipcMain;
+	const clipboard = electron.clipboard;
+	var tmp_img = join(app.getPath("userData"), "tmp.png");
+	var ha_path = join(app.getPath("userData"), "hardwareAcceleration");
+	var ua_path = join(app.getPath("userData"), "useragent");
+	var lang_path = join(app.getPath("userData"), "language");
+	var log_dir_path = join(app.getPath("userData"), "logs");
 	//ログ
-	var today = new Date()
+	var today = new Date();
 	//今日のやつ
-	var todayStr = today.getFullYear() + '' + (today.getMonth() + 1) + '' + today.getDate() + '.log'
+	var todayStr = today.getFullYear() + "" + (today.getMonth() + 1) + "" + today.getDate() + ".log";
 	//昨日のやつ
-	today.setDate(today.getDate() - 1)
-	var yestStr = today.getFullYear() + '' + (today.getMonth() + 1) + '' + today.getDate() + '.log'
+	today.setDate(today.getDate() - 1);
+	var yestStr = today.getFullYear() + "" + (today.getMonth() + 1) + "" + today.getDate() + ".log";
 	//一昨日のやつ
-	today.setDate(today.getDate() - 1)
-	var yest2Str = today.getFullYear() + '' + (today.getMonth() + 1) + '' + today.getDate() + '.log'
+	today.setDate(today.getDate() - 1);
+	var yest2Str = today.getFullYear() + "" + (today.getMonth() + 1) + "" + today.getDate() + ".log";
 
-	const BrowserWindow = electron.BrowserWindow
-	const dialog = electron.dialog
-	const os = require('os')
-	const language = require('../main/language.js')
+	const BrowserWindow = electron.BrowserWindow;
+	const dialog = electron.dialog;
+	const os = require("os");
+	const language = require("../main/language.js");
 	//プラットフォーム
-	ipc.on('getPlatform', function(e, arg) {
+	ipc.on("getPlatform", function(e, arg) {
 		try {
-			var gitHash = fs.readFileSync('git', 'utf8')
+			var gitHash = fs.readFileSync("git", "utf8");
 		} catch {
-			var gitHash = null
+			var gitHash = null;
 		}
-		e.sender.webContents.send('platform', [
-			process.platform,
-			process.arch,
-			process.version,
-			process.versions.chrome,
-			process.versions.electron,
-			gitHash
-		])
-	})
+		e.sender.webContents.send("platform", [process.platform, process.arch, process.version, process.versions.chrome, process.versions.electron, gitHash]);
+	});
 	//言語
-	ipc.on('lang', function(e, arg) {
-		console.log('set:' + arg)
-		fs.writeFileSync(lang_path, arg)
-		e.sender.webContents.send('langres', arg)
-	})
+	ipc.on("lang", function(e, arg) {
+		console.log("set:" + arg);
+		fs.writeFileSync(lang_path, arg);
+		e.sender.webContents.send("langres", arg);
+	});
 	//エクスポートのダイアログ
-	ipc.on('exportSettings', function(e, args) {
+	ipc.on("exportSettings", function(e, args) {
 		dialog.showSaveDialog(
 			mainWindow,
 			{
-				title: 'Export',
-				properties: ['openFile', 'createDirectory'],
-				defaultPath: 'export.thedeskconfig.json5'
+				title: "Export",
+				properties: ["openFile", "createDirectory"],
+				defaultPath: "export.thedeskconfig.json5"
 			},
 			savedFiles => {
 				if (!savedFiles) {
-					return false
+					return false;
 				}
-				e.sender.webContents.send('exportSettingsFile', savedFiles)
+				e.sender.webContents.send("exportSettingsFile", savedFiles);
 			}
-		)
-	})
+		);
+	});
 	//インポートのダイアログ
-	ipc.on('importSettings', function(e, args) {
+	ipc.on("importSettings", function(e, args) {
 		dialog.showOpenDialog(
 			mainWindow,
 			{
-				title: 'Import',
-				properties: ['openFile'],
-				filters: [
-					{ name: 'TheDesk Config', extensions: ['thedeskconfig', 'thedeskconfigv2', 'json5'] }
-				]
+				title: "Import",
+				properties: ["openFile"],
+				filters: [{ name: "TheDesk Config", extensions: ["thedeskconfig", "thedeskconfigv2", "json5"] }]
 			},
 			fileNames => {
-				console.log('imported from: ', fileNames)
+				console.log("imported from: ", fileNames)
 				if (!fileNames) {
-					return false
+					return false;
 				}
-				e.sender.webContents.send('config', JSON5.parse(fs.readFileSync(fileNames[0], 'utf8')))
+				e.sender.webContents.send("config", JSON5.parse(fs.readFileSync(fileNames[0], "utf8")));
 			}
-		)
-	})
+		);
+	});
 	//保存フォルダのダイアログ
-	ipc.on('savefolder', function(e, args) {
+	ipc.on("savefolder", function(e, args) {
 		dialog.showOpenDialog(
 			mainWindow,
 			{
-				title: 'Save folder',
-				properties: ['openDirectory']
+				title: "Save folder",
+				properties: ["openDirectory"]
 			},
 			fileNames => {
-				e.sender.webContents.send('savefolder', fileNames[0])
+				e.sender.webContents.send("savefolder", fileNames[0]);
 			}
-		)
-	})
+		);
+	});
 	//カスタムサウンドのダイアログ
-	ipc.on('customSound', function(e, arg) {
+	ipc.on("customSound", function(e, arg) {
 		dialog.showOpenDialog(
 			mainWindow,
 			{
-				title: 'Custom sound',
-				properties: ['openFile'],
-				filters: [
-					{ name: 'Audio', extensions: ['mp3', 'aac', 'wav', 'flac', 'm4a'] },
-					{ name: 'All', extensions: ['*'] }
-				]
+				title: "Custom sound",
+				properties: ["openFile"],
+				filters: [{ name: "Audio", extensions: ["mp3", "aac", "wav", "flac", "m4a"] }, { name: "All", extensions: ["*"] }]
 			},
 			fileNames => {
-				e.sender.webContents.send('customSoundRender', [arg, fileNames[0]])
+				e.sender.webContents.send("customSoundRender", [arg, fileNames[0]]);
 			}
-		)
-	})
+		);
+	});
 
 	//ハードウェアアクセラレーションの無効化
-	ipc.on('ha', function(e, arg) {
-		if (arg == 'true') {
-			fs.writeFileSync(ha_path, arg)
+	ipc.on("ha", function(e, arg) {
+		if (arg == "true") {
+			fs.writeFileSync(ha_path, arg);
 		} else {
-			fs.unlink(ha_path, function(err) {})
+			fs.unlink(ha_path, function(err) {});
 		}
-		app.relaunch()
-		app.exit()
-	})
-	ipc.on('ua', function(e, arg) {
-		if (arg == '') {
-			fs.unlink(ua_path, function(err) {})
+		app.relaunch();
+		app.exit();
+	});
+	ipc.on("ua", function(e, arg) {
+		if (arg == "") {
+			fs.unlink(ua_path, function(err) {});
 		} else {
-			fs.writeFileSync(ua_path, arg)
+			fs.writeFileSync(ua_path, arg);
 		}
-		app.relaunch()
-		app.exit()
-	})
+		app.relaunch();
+		app.exit();
+	});
 
-	ipc.on('quit', (e, args) => {
-		app.quit()
-	})
-	ipc.on('about', (e, args) => {
-		about()
-	})
+	ipc.on("quit", (e, args) => {
+		app.quit();
+	});
+	ipc.on("about", (e, args) => {
+		about();
+	});
 	function about() {
-		var ver = app.getVersion()
+		var ver = app.getVersion();
 		var window = new BrowserWindow({
 			webPreferences: {
 				webviewTag: false,
 				nodeIntegration: false,
 				contextIsolation: true,
-				preload: join(dirname, 'js', 'platform', 'preload.js')
+				preload: join(dirname, "js", "platform", "preload.js")
 			},
 			width: 300,
 			height: 500,
 			transparent: false, // ウィンドウの背景を透過
 			frame: false, // 枠の無いウィンドウ
 			resizable: false
-		})
-		window.loadURL(dir + '/about.html?ver=' + ver)
-		return 'true'
+		});
+		window.loadURL(dir + "/about.html?ver=" + ver);
+		return "true";
 	}
-	ipc.on('nano', function(e, x, y) {
-		var nano_info_path = join(app.getPath('userData'), 'nano-window-position.json')
-		var window_pos
+	ipc.on("nano", function(e, x, y) {
+		var nano_info_path = join(app.getPath("userData"), "nano-window-position.json");
+		var window_pos;
 		try {
-			window_pos = JSON.parse(fs.readFileSync(nano_info_path, 'utf8'))
+			window_pos = JSON.parse(fs.readFileSync(nano_info_path, "utf8"));
 		} catch (e) {
-			window_pos = [0, 0] // デフォルトバリュー
+			window_pos = [0, 0]; // デフォルトバリュー
 		}
 		var nanowindow = new BrowserWindow({
 			webPreferences: {
 				webviewTag: false,
 				nodeIntegration: false,
 				contextIsolation: true,
-				preload: join(dirname, 'js', 'platform', 'preload.js')
+				preload: join(dirname, "js", "platform", "preload.js")
 			},
 			width: 350,
 			height: 140,
 			transparent: false, // ウィンドウの背景を透過
 			frame: false, // 枠の無いウィンドウ
 			resizable: false
-		})
-		nanowindow.loadURL(dir + '/nano.html')
-		nanowindow.setAlwaysOnTop(true)
+		});
+		nanowindow.loadURL(dir + "/nano.html");
+		nanowindow.setAlwaysOnTop(true);
 		//nanowindow.toggleDevTools()
-		nanowindow.setPosition(window_pos[0], window_pos[1])
-		nanowindow.on('close', function() {
-			fs.writeFileSync(nano_info_path, JSON.stringify(nanowindow.getPosition()))
-		})
-		return true
-	})
-	var cbTimer1
-	ipc.on('startmem', (e, arg) => {
-		event = e.sender
-		cbTimer1 = setInterval(mems, 1000)
-	})
+		nanowindow.setPosition(window_pos[0], window_pos[1]);
+		nanowindow.on("close", function() {
+			fs.writeFileSync(nano_info_path, JSON.stringify(nanowindow.getPosition()));
+		});
+		return true;
+	});
+	var cbTimer1;
+	ipc.on("startmem", (e, arg) => {
+		event = e.sender;
+		cbTimer1 = setInterval(mems, 1000);
+	});
 	function mems() {
-		var mem = os.totalmem() - os.freemem()
+		var mem = os.totalmem() - os.freemem();
 		if (mainWindow) {
-			event.webContents.send('memory', [mem, os.cpus()[0].model, os.totalmem()])
+			event.webContents.send("memory", [mem, os.cpus()[0].model, os.totalmem()]);
 		}
 	}
-	ipc.on('endmem', (e, arg) => {
+	ipc.on("endmem", (e, arg) => {
 		if (cbTimer1) {
-			clearInterval(cbTimer1)
+			clearInterval(cbTimer1);
 		}
-	})
+	});
 
-	ipc.on('export', (e, args) => {
-		fs.writeFileSync(args[0], JSON5.stringify(args[1]))
-		e.sender.webContents.send('exportAllComplete', '')
-	})
+	ipc.on("export", (e, args) => {
+		fs.writeFileSync(args[0], JSON5.stringify(args[1]));
+		e.sender.webContents.send("exportAllComplete", "");
+	});
 	//フォント
 	function object_array_sort(data, key, order, fn) {
 		//デフォは降順(DESC)
-		var num_a = -1
-		var num_b = 1
+		var num_a = -1;
+		var num_b = 1;
 
-		if (order === 'asc') {
+		if (order === "asc") {
 			//指定があれば昇順(ASC)
-			num_a = 1
-			num_b = -1
+			num_a = 1;
+			num_b = -1;
 		}
 
 		data = data.sort(function(a, b) {
-			var x = a[key]
-			var y = b[key]
-			if (x > y) return num_a
-			if (x < y) return num_b
-			return 0
-		})
+			var x = a[key];
+			var y = b[key];
+			if (x > y) return num_a;
+			if (x < y) return num_b;
+			return 0;
+		});
 
 		//重複排除
-		var arrObj = {}
+		var arrObj = {};
 		for (var i = 0; i < data.length; i++) {
-			arrObj[data[i]['family']] = data[i]
+			arrObj[data[i]["family"]] = data[i];
 		}
 
-		data = []
+		data = [];
 		for (var key in arrObj) {
-			data.push(arrObj[key])
+			data.push(arrObj[key]);
 		}
 
-		fn(data) // ソート後の配列を返す
+		fn(data); // ソート後の配列を返す
 	}
-	ipc.on('fonts', (e, arg) => {
-		const fm = require('font-manager')
-		var fonts = fm.getAvailableFontsSync()
-		object_array_sort(fonts, 'family', 'asc', function(fonts_sorted) {
-			e.sender.webContents.send('font-list', fonts_sorted)
-		})
-	})
+	ipc.on("fonts", (e, arg) => {
+		const fm = require("font-manager");
+		var fonts = fm.getAvailableFontsSync();
+		object_array_sort(fonts, "family", "asc", function(fonts_sorted) {
+			e.sender.webContents.send("font-list", fonts_sorted);
+		});
+	});
 	//コピー
-	ipc.on('copy', (e, arg) => {
-		clipboard.writeText(arg)
-	})
+	ipc.on("copy", (e, arg) => {
+		clipboard.writeText(arg);
+	});
 	//ログ
-	ipc.on('log', (e, arg) => {
-		var today = new Date()
-		var todayStr = today.getFullYear() + '' + (today.getMonth() + 1) + '' + today.getDate()
-		var log_path = join(log_dir_path, todayStr + '.log')
-		fs.appendFile(log_path, '\n' + arg, function(err) {
+	ipc.on("log", (e, arg) => {
+		var today = new Date();
+		var todayStr = today.getFullYear() + "" + (today.getMonth() + 1) + "" + today.getDate();
+		var log_path = join(log_dir_path, todayStr + ".log");
+		fs.appendFile(log_path, "\n" + arg, function(err) {
 			if (err) {
-				throw err
+				throw err;
 			}
-		})
-	})
-	ipc.on('getLogs', (e, arg) => {
-		var logs = ''
-		var todayLog = ''
-		var yestLog = ''
-		var yest2Log = ''
+		});
+	});
+	ipc.on("getLogs", (e, arg) => {
+		var logs=""
+		var todayLog=""
+		var yestLog=""
+		var yest2Log=""
 		fs.readdir(log_dir_path, function(err, files) {
-			if (err) throw err
+			if (err) throw err;
 			files.filter(function(file) {
 				if (file == todayStr) {
-					todayLog = fs.readFileSync(join(log_dir_path, file), 'utf8')
+					todayLog=fs.readFileSync(join(log_dir_path, file), "utf8")
 				}
 				if (file == yestStr) {
-					yestLog = logs + fs.readFileSync(join(log_dir_path, file), 'utf8')
+					yestLog=logs+fs.readFileSync(join(log_dir_path, file), "utf8")
 				}
 				if (file == yest2Str) {
-					yest2Log = fs.readFileSync(join(log_dir_path, file), 'utf8')
+					yest2Log=fs.readFileSync(join(log_dir_path, file), "utf8")
 				}
-				logs = todayLog + yestLog + yest2Log
-			})
-			logs = yest2Log + yestLog + todayLog
-			e.sender.webContents.send('logData', logs)
-		})
-	})
+				logs = todayLog + yestLog + yest2Log;
+			});
+			logs = yest2Log + yestLog + todayLog;
+			e.sender.webContents.send("logData", logs);
+		});
+	});
 	//起動時ログディレクトリ存在確認と作成、古ログ削除
 	fs.access(log_dir_path, fs.constants.R_OK | fs.constants.W_OK, error => {
 		if (error) {
-			if (error.code === 'ENOENT') {
-				fs.mkdirSync(log_dir_path)
+			if (error.code === "ENOENT") {
+				fs.mkdirSync(log_dir_path);
 			} else {
-				return
+				return;
 			}
 		} else {
 			fs.readdir(log_dir_path, function(err, files) {
-				if (err) throw err
+				if (err) throw err;
 				files.filter(function(file) {
 					if (file != todayStr && file != yestStr && file != yest2Str) {
-						fs.unlinkSync(join(log_dir_path, file))
+						fs.unlinkSync(join(log_dir_path, file));
 					}
-				})
-			})
+				});
+			});
 		}
-	})
+	});
 }
-exports.system = system
+exports.system = system;
diff --git a/app/package.json b/app/package.json
index 569bbd56..5bf0d453 100644
--- a/app/package.json
+++ b/app/package.json
@@ -52,13 +52,12 @@
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.11.2",
     "electron-dl": "^1.14.0",
-    "electron-window-state": "^5.0.3",
     "jimp": "^0.9.1",
     "jquery": "^3.4.1",
     "jquery-ui-dist": "^1.12.1",
+    "materialize-css": "git://github.com/cutls/materialize",
     "json5": "^2.1.1",
     "lodash": "^4.17.15",
-    "materialize-css": "git://github.com/cutls/materialize",
     "sumchecker": "^3.0.1",
     "sweetalert2": "^9.4.0",
     "vue": "^2.6.10"
diff --git a/app/yarn.lock b/app/yarn.lock
index 74947222..b8cb1b9f 100644
--- a/app/yarn.lock
+++ b/app/yarn.lock
@@ -1031,14 +1031,6 @@ electron-rebuild@^1.8.8:
     spawn-rx "^3.0.0"
     yargs "^13.2.4"
 
-electron-window-state@^5.0.3:
-  version "5.0.3"
-  resolved "https://registry.yarnpkg.com/electron-window-state/-/electron-window-state-5.0.3.tgz#4f36d09e3f953d87aff103bf010f460056050aa8"
-  integrity sha512-1mNTwCfkolXl3kMf50yW3vE2lZj0y92P/HYWFBrb+v2S/pCka5mdwN3cagKm458A7NjndSwijynXgcLWRodsVg==
-  dependencies:
-    jsonfile "^4.0.0"
-    mkdirp "^0.5.1"
-
 electron@^7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/electron/-/electron-7.1.1.tgz#98be17d850e64689a09ab6dd1e437b36307f2fcf"