diff --git a/iina.xcodeproj/project.pbxproj b/iina.xcodeproj/project.pbxproj
index f15a8fd5e0..e331cd2e6f 100644
--- a/iina.xcodeproj/project.pbxproj
+++ b/iina.xcodeproj/project.pbxproj
@@ -367,6 +367,7 @@
 		133400271EB3831F007FE17E /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.rtf; name = ja; path = ja.lproj/Contribution.rtf; sourceTree = "<group>"; };
 		133400281EB3831F007FE17E /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = ja.lproj/KeyBinding.strings; sourceTree = "<group>"; };
 		134C1370205FB181002C7BE4 /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = ja.lproj/PrefOSCToolbarSettingsSheetController.strings; sourceTree = "<group>"; };
+		13B82A33218D4A3B00F515A1 /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = ja.lproj/MiniPlayerWindowController.strings; sourceTree = "<group>"; };
 		13D511921ED0396D0072D1C0 /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = ja.lproj/HistoryWindowController.strings; sourceTree = "<group>"; };
 		13D77DE01F85A2980076990A /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = ja.lproj/FilterPresets.strings; sourceTree = "<group>"; };
 		13D77DE21F8656FC0076990A /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = ja.lproj/FreeSelectingViewController.strings; sourceTree = "<group>"; };
@@ -2834,6 +2835,7 @@
 				84BAFD3E2142FF0A006B3CC1 /* zh-Hans */,
 				E5A0D212214576E200750FF3 /* fr */,
 				875FDFA42157877000F7F7FD /* ru */,
+				13B82A33218D4A3B00F515A1 /* ja */,
 			);
 			name = MiniPlayerWindowController.xib;
 			sourceTree = "<group>";
diff --git a/iina/ja.lproj/AboutWindowController.strings b/iina/ja.lproj/AboutWindowController.strings
index 32845b2109..f45e1fdace 100644
--- a/iina/ja.lproj/AboutWindowController.strings
+++ b/iina/ja.lproj/AboutWindowController.strings
@@ -3,6 +3,18 @@
 /* Class = "NSWindow"; title = "About"; ObjectID = "F0z-JX-Cv5"; */
 "F0z-JX-Cv5.title" = "IINAについて";
 
+/* Class = "NSTabViewItem"; label = "Credits"; ObjectID = "HMc-Oy-hBR"; */
+"HMc-Oy-hBR.label" = "クレジット";
+
+/* Class = "NSTextFieldCell"; title = "Translators:"; ObjectID = "JlJ-V6-PVY"; */
+"JlJ-V6-PVY.title" = "翻訳者:";
+
+/* Class = "NSButtonCell"; title = "Contributors"; ObjectID = "XWg-VQ-fRV"; */
+"XWg-VQ-fRV.title" = "コントリビュータ";
+
+/* Class = "NSTabViewItem"; label = "License"; ObjectID = "Z1e-XE-TR5"; */
+"Z1e-XE-TR5.label" = "ライセンス";
+
 /* Class = "NSTextFieldCell"; title = "mpv 0.0.0"; ObjectID = "ZAx-ah-fbZ"; */
 "ZAx-ah-fbZ.title" = "mpv 0.0.0";
 
@@ -12,6 +24,12 @@
 /* Class = "NSTextFieldCell"; title = "0.0.1"; ObjectID = "gZA-85-Zaw"; */
 "gZA-85-Zaw.title" = "0.0.1";
 
+/* Class = "NSButtonCell"; title = "License"; ObjectID = "jEf-xN-6xb"; */
+"jEf-xN-6xb.title" = "ライセンス";
+
+/* Class = "NSTabViewItem"; label = "Contributors"; ObjectID = "oIB-g4-IyG"; */
+"oIB-g4-IyG.label" = "コントリビュータ";
+
 /* Class = "NSBox"; title = "Box"; ObjectID = "qXK-O9-s6m"; */
 "qXK-O9-s6m.title" = "Box";
 
diff --git a/iina/ja.lproj/FontPickerWindowController.strings b/iina/ja.lproj/FontPickerWindowController.strings
index 1309c32bd1..4e2c440904 100644
--- a/iina/ja.lproj/FontPickerWindowController.strings
+++ b/iina/ja.lproj/FontPickerWindowController.strings
@@ -12,11 +12,8 @@
 /* Class = "NSButtonCell"; title = "Cancel"; ObjectID = "Ihd-HK-wsv"; */
 "Ihd-HK-wsv.title" = "キャンセル";
 
-/* Class = "NSTextFieldCell"; title = "Filter:"; ObjectID = "Jhm-tD-3Xf"; */
-"Jhm-tD-3Xf.title" = "検索:";
-
-/* Class = "NSTextFieldCell"; title = "Other:"; ObjectID = "KPy-vq-mpf"; */
-"KPy-vq-mpf.title" = "その他:";
+/* Class = "NSTextFieldCell"; placeholderString = "sans-serif"; ObjectID = "Kt3-me-43R"; */
+"Kt3-me-43R.placeholderString" = "sans-serif";
 
 /* Class = "NSButtonCell"; title = "OK"; ObjectID = "S5m-SJ-Ggp"; */
 "S5m-SJ-Ggp.title" = "OK";
@@ -24,6 +21,9 @@
 /* Class = "NSTextFieldCell"; title = "Text Cell"; ObjectID = "TPh-rU-Vee"; */
 "TPh-rU-Vee.title" = "Text Cell";
 
+/* Class = "NSTextFieldCell"; title = "Choose a font:"; ObjectID = "TSI-Wt-Edx"; */
+"TSI-Wt-Edx.title" = "フォントを選択:";
+
 /* Class = "NSTextFieldCell"; title = "Text Cell"; ObjectID = "Wib-jE-Vgi"; */
 "Wib-jE-Vgi.title" = "Text Cell";
 
@@ -36,3 +36,6 @@
 /* Class = "NSTextFieldCell"; title = "Test"; ObjectID = "qwM-r2-9ki"; */
 "qwM-r2-9ki.title" = "フォント Preview";
 
+/* Class = "NSTextFieldCell"; title = "Or enter the font name:"; ObjectID = "waR-LB-484"; */
+"waR-LB-484.title" = "またはフォント名を入力:";
+
diff --git a/iina/ja.lproj/Localizable.strings b/iina/ja.lproj/Localizable.strings
index f689a4859b..4b4088a103 100644
--- a/iina/ja.lproj/Localizable.strings
+++ b/iina/ja.lproj/Localizable.strings
@@ -21,7 +21,7 @@
 "alert.clear_history.title" = "再生履歴をクリア";
 "alert.clear_watch_later.message" = "すべての保存済み再生位置(\"あとで見る\"情報)を消去しますか?";
 "alert.clear_watch_later.title" = "保存済み再生位置をクリア";
-"alert.config.cannot_create" = "設定ファイルは作成できません!";
+"alert.config.cannot_create" = "設定ファイルは作成できません!\n%@";
 "alert.config.cannot_write" = "設定ファイルには書き込めません!";
 "alert.config.duplicate.message" = "複製する設定ファイルの名前を入力してください。";
 "alert.config.duplicate.title" = "設定の複製";
@@ -179,6 +179,8 @@
 "pl_menu.wrong_sub" = "誤った字幕!";
 "playlist.chapter_cap" = "チャプタ";
 "playlist.playlist_cap" = "プレイリスト";
+"playlist.total_length" = "合計 %@";
+"playlist.total_length_with_selected" = "%@ / %@を選択中";
 "preference.advanced" = "拡張";
 "preference.control" = "コントロール";
 "preference.general" = "一般";
diff --git a/iina/ja.lproj/MiniPlayerWindowController.strings b/iina/ja.lproj/MiniPlayerWindowController.strings
new file mode 100644
index 0000000000..ec5eb70127
--- /dev/null
+++ b/iina/ja.lproj/MiniPlayerWindowController.strings
@@ -0,0 +1,35 @@
+/** Generated by IINA Translation Utility */
+
+/* Class = "NSWindow"; title = "Window"; ObjectID = "F0z-JX-Cv5"; */
+"F0z-JX-Cv5.title" = "ウィンドウ";
+
+/* Class = "NSButton"; ibShadowedToolTip = "Close Mini Player"; ObjectID = "F4P-Wj-5qw"; */
+"F4P-Wj-5qw.ibShadowedToolTip" = "ミニプレイヤーを閉じる";
+
+/* Class = "NSButton"; ibShadowedToolTip = "Back to video mode"; ObjectID = "K7j-vB-FlK"; */
+"K7j-vB-FlK.ibShadowedToolTip" = "ビデオモードに戻る";
+
+/* Class = "NSBox"; title = "Box"; ObjectID = "NWy-Hm-vxL"; */
+"NWy-Hm-vxL.title" = "Box";
+
+/* Class = "NSTextFieldCell"; title = "Artist - Album"; ObjectID = "Nle-gv-CWY"; */
+"Nle-gv-CWY.title" = "Artist - Album";
+
+/* Class = "NSTextFieldCell"; title = "Title"; ObjectID = "Rs9-6l-6vp"; */
+"Rs9-6l-6vp.title" = "Title";
+
+/* Class = "NSTextFieldCell"; title = "-:--:--"; ObjectID = "V74-PQ-Yfr"; */
+"V74-PQ-Yfr.title" = "-:--:--";
+
+/* Class = "NSButton"; ibShadowedToolTip = "Back to video mode"; ObjectID = "WS6-ix-uBJ"; */
+"WS6-ix-uBJ.ibShadowedToolTip" = "ビデオモードに戻る";
+
+/* Class = "NSTextFieldCell"; title = "-:--:--"; ObjectID = "WnA-NE-3bG"; */
+"WnA-NE-3bG.title" = "-:--:--";
+
+/* Class = "NSTextFieldCell"; title = "50"; ObjectID = "aot-6J-Jp7"; */
+"aot-6J-Jp7.title" = "50";
+
+/* Class = "NSButton"; ibShadowedToolTip = "Close Mini Player"; ObjectID = "hZH-NM-Lst"; */
+"hZH-NM-Lst.ibShadowedToolTip" = "ミニプレイヤーを閉じる";
+
diff --git a/iina/ja.lproj/PlaylistViewController.strings b/iina/ja.lproj/PlaylistViewController.strings
index 20c1f34a37..f4b85d619b 100644
--- a/iina/ja.lproj/PlaylistViewController.strings
+++ b/iina/ja.lproj/PlaylistViewController.strings
@@ -3,6 +3,9 @@
 /* Class = "NSTextFieldCell"; title = "▶︎"; ObjectID = "4yj-cg-fli"; */
 "4yj-cg-fli.title" = "▶︎";
 
+/* Class = "NSTextFieldCell"; title = "Label"; ObjectID = "6J7-iM-V5h"; */
+"6J7-iM-V5h.title" = "Label";
+
 /* Class = "NSMenuItem"; title = "Add File…"; ObjectID = "CI2-Gm-j4o"; */
 "CI2-Gm-j4o.title" = "ファイルを追加...";
 
diff --git a/iina/ja.lproj/PrefGeneralViewController.strings b/iina/ja.lproj/PrefGeneralViewController.strings
index c5597468ed..0801324cc7 100644
--- a/iina/ja.lproj/PrefGeneralViewController.strings
+++ b/iina/ja.lproj/PrefGeneralViewController.strings
@@ -6,12 +6,18 @@
 /* Class = "NSButtonCell"; title = "Keep window open after playback finishes"; ObjectID = "2iM-j7-AzQ"; */
 "2iM-j7-AzQ.title" = "再生終了時にウィンドウを開いたままにする";
 
-/* Class = "NSTextFieldCell"; title = "Save to"; ObjectID = "2rJ-mg-OuU"; */
+/* Class = "NSButtonCell"; title = "Save to"; ObjectID = "2rJ-mg-OuU"; */
 "2rJ-mg-OuU.title" = "保存先";
 
 /* Class = "NSMenuItem"; title = "PNG"; ObjectID = "3XO-ks-TDg"; */
 "3XO-ks-TDg.title" = "PNG";
 
+/* Class = "NSButtonCell"; title = "Copy to clipboard"; ObjectID = "3gs-3w-rg6"; */
+"3gs-3w-rg6.title" = "クリップボードにコピー";
+
+/* Class = "NSTextFieldCell"; title = "Options:"; ObjectID = "4Qe-7S-8xK"; */
+"4Qe-7S-8xK.title" = "オプション:";
+
 /* Class = "NSButtonCell"; title = "Enable "Open Recent" menu"; ObjectID = "55O-ik-ql6"; */
 "55O-ik-ql6.title" = "最近使った項目を保存する";
 
@@ -69,6 +75,9 @@
 /* Class = "NSMenuItem"; title = "JPEG (.jpeg)"; ObjectID = "NVh-C5-b9i"; */
 "NVh-C5-b9i.title" = "JPEG (.jpeg)";
 
+/* Class = "NSTextFieldCell"; title = "Destination:"; ObjectID = "PhL-vP-i7L"; */
+"PhL-vP-i7L.title" = "出力先:";
+
 /* Class = "NSButtonCell"; title = "Add files in the same folder automatically"; ObjectID = "QJq-fO-hhK"; */
 "QJq-fO-hhK.title" = "自動で同じフォルダにファイルを追加する";
 
@@ -99,6 +108,9 @@
 /* Class = "NSButtonCell"; title = "Check for updates"; ObjectID = "hWC-KJ-FuC"; */
 "hWC-KJ-FuC.title" = "アップデートの確認";
 
+/* Class = "NSButtonCell"; title = "Pause when machine goes to sleep"; ObjectID = "i4A-86-dGC"; */
+"i4A-86-dGC.title" = "PCがスリープしたら一時停止";
+
 /* Class = "NSButtonCell"; title = "Enable playback history"; ObjectID = "iGS-qN-f5q"; */
 "iGS-qN-f5q.title" = "再生履歴を保存する";
 
diff --git a/iina/ja.lproj/PrefUIViewController.strings b/iina/ja.lproj/PrefUIViewController.strings
index 04cabcc627..cf367f5fcb 100644
--- a/iina/ja.lproj/PrefUIViewController.strings
+++ b/iina/ja.lproj/PrefUIViewController.strings
@@ -207,6 +207,9 @@
 /* Class = "NSMenuItem"; title = "fit the screen"; ObjectID = "vdi-lO-q6e"; */
 "vdi-lO-q6e.title" = "スクリーンに合わせる";
 
+/* Class = "NSButtonCell"; title = "Enable OSD"; ObjectID = "xMh-SP-nkc"; */
+"xMh-SP-nkc.title" = "OSDの有効化";
+
 /* Class = "NSTextFieldCell"; title = "Toolbar:"; ObjectID = "xP1-Vh-27X"; */
 "xP1-Vh-27X.title" = "ツールバー:";