diff --git a/po/th.po b/po/th.po
index 01f07a7ca949cc5615027f4473e56cbc2a2220f9..2edb5643388fbcc941ab8a2d6fc1cfc304ddf469 100644
--- a/po/th.po
+++ b/po/th.po
@@ -13,8 +13,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Thunar\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-08-06 00:45+0200\n"
-"PO-Revision-Date: 2021-08-05 22:45+0000\n"
+"POT-Creation-Date: 2021-08-13 00:45+0200\n"
+"PO-Revision-Date: 2021-08-12 22:45+0000\n"
 "Last-Translator: Xfce Bot <transifex@xfce.org>\n"
 "Language-Team: Thai (http://www.transifex.com/xfce/thunar/language/th/)\n"
 "MIME-Version: 1.0\n"
@@ -882,16 +882,18 @@ msgstr "แฟ้ม"
 msgid "File Name"
 msgstr "ชื่อแฟ้ม"
 
-#: ../thunar/thunar-enum-types.c:540 ../thunar/thunar-preferences-dialog.c:365
+#: ../thunar/thunar-enum-types.c:540 ../thunar/thunar-enum-types.c:563
+#: ../thunar/thunar-preferences-dialog.c:365
 #: ../thunar/thunar-preferences-dialog.c:945
 msgid "Never"
 msgstr "ไม่เลย"
 
-#: ../thunar/thunar-enum-types.c:541
+#: ../thunar/thunar-enum-types.c:541 ../thunar/thunar-enum-types.c:564
 msgid "Only for remote location"
 msgstr ""
 
-#: ../thunar/thunar-enum-types.c:542 ../thunar/thunar-preferences-dialog.c:367
+#: ../thunar/thunar-enum-types.c:542 ../thunar/thunar-enum-types.c:565
+#: ../thunar/thunar-preferences-dialog.c:367
 #: ../thunar/thunar-preferences-dialog.c:942
 msgid "Always"
 msgstr "เสมอ"
@@ -1680,7 +1682,7 @@ msgid "Allow this file to _run as a program"
 msgstr "อนุญาตให้เ_รียกทำงานแบบโปรแกรม"
 
 #: ../thunar/thunar-permissions-chooser.c:388
-#: ../thunar/thunar-preferences-dialog.c:1061
+#: ../thunar/thunar-preferences-dialog.c:1092
 msgid ""
 "Allowing untrusted programs to run presents a security risk to your system."
 msgstr "การอนุญาตให้โปรแกรมที่ไม่น่าเชื่อถือทำงาน เป็นการสุ่มเสี่ยงด้านการรักษาความปลอดภัย"
@@ -2171,57 +2173,67 @@ msgid ""
 "successfully finished."
 msgstr ""
 
+#: ../thunar/thunar-preferences-dialog.c:991
+msgid "Verify file checksum on copy"
+msgstr ""
+
 #: ../thunar/thunar-preferences-dialog.c:995
+msgid ""
+"Compare original file and copy with checksum. This will prevent corrupted "
+"files. Enabling this option will largely increase copy time."
+msgstr ""
+
+#: ../thunar/thunar-preferences-dialog.c:1026
 msgid "Folder Permissions"
 msgstr "การกำหนดสิทธิ์ของโฟลเดอร์"
 
-#: ../thunar/thunar-preferences-dialog.c:1008
+#: ../thunar/thunar-preferences-dialog.c:1039
 msgid ""
 "When changing the permissions of a folder, you\n"
 "can also apply the changes to the contents of the\n"
 "folder. Select the default behavior below:"
 msgstr "เมื่อเปลี่ยนการกำหนดสิทธิ์ของโฟลเดอร์\nคุณสามารถให้การเปลี่ยนนั้นมีผลกับเนื้อหาของโฟลเดอร์ได้ด้วย\nเลือกพฤติกรรมปกติต่อไปนี้:"
 
-#: ../thunar/thunar-preferences-dialog.c:1017
+#: ../thunar/thunar-preferences-dialog.c:1048
 msgid "Ask every time"
 msgstr "ถามทุกครั้ง"
 
-#: ../thunar/thunar-preferences-dialog.c:1018
+#: ../thunar/thunar-preferences-dialog.c:1049
 msgid "Apply to Folder and Contents"
 msgstr "เปลี่ยนทั้งโฟลเดอร์และเนื้อหา"
 
-#: ../thunar/thunar-preferences-dialog.c:1019
+#: ../thunar/thunar-preferences-dialog.c:1050
 msgid "Apply to Folder Only"
 msgstr "เปลี่ยนเฉพาะโฟลเดอร์เท่านั้น"
 
-#: ../thunar/thunar-preferences-dialog.c:1034
+#: ../thunar/thunar-preferences-dialog.c:1065
 msgid "Security"
 msgstr "การรักษาความปลอดภัย"
 
-#: ../thunar/thunar-preferences-dialog.c:1051
+#: ../thunar/thunar-preferences-dialog.c:1082
 msgid "Execute shell scripts"
 msgstr "เรียกทำงานเชลล์สคริปต์"
 
-#: ../thunar/thunar-preferences-dialog.c:1069
+#: ../thunar/thunar-preferences-dialog.c:1100
 msgid "Volume Management"
 msgstr "การจัดการโวลุม"
 
 #. add check button to enable/disable auto mounting
-#: ../thunar/thunar-preferences-dialog.c:1086
+#: ../thunar/thunar-preferences-dialog.c:1117
 msgid "Enable _Volume Management"
 msgstr "เปิดใช้การจัดการโ_วลุม"
 
-#: ../thunar/thunar-preferences-dialog.c:1102
+#: ../thunar/thunar-preferences-dialog.c:1133
 msgid ""
 "<a href=\"volman-config:\">Configure</a> the management of removable drives,\n"
 "devices and media."
 msgstr "<a href=\"volman-config:\">ตั้งค่า</a> การจัดการไดรว์ อุปกรณ์ และสื่อถอดเสียบ"
 
-#: ../thunar/thunar-preferences-dialog.c:1117
+#: ../thunar/thunar-preferences-dialog.c:1148
 msgid "Missing dependencies"
 msgstr "องค์ประกอบขาดหาย"
 
-#: ../thunar/thunar-preferences-dialog.c:1125
+#: ../thunar/thunar-preferences-dialog.c:1156
 msgid ""
 "It looks like <a href=\"https://wiki.gnome.org/Projects/gvfs\">gvfs</a> is not available.\n"
 "Important features including trash support,\n"
@@ -2231,7 +2243,7 @@ msgstr "ดูเหมือน <a href=\"https://wiki.gnome.org/Projects/gvfs\
 
 #. tell the user that we failed to come up with the thunar-volman
 #. configuration dialog
-#: ../thunar/thunar-preferences-dialog.c:1199
+#: ../thunar/thunar-preferences-dialog.c:1230
 msgid "Failed to display the volume management settings"
 msgstr "แสดงกล่องโต้ตอบตั้งค่าการจัดการโวลุมไม่สำเร็จ"
 
@@ -2581,13 +2593,13 @@ msgstr "เ_ปลี่ยนชื่อจุดลัด"
 msgid "_Remove Shortcut"
 msgstr "_ลบจุดลัด"
 
-#: ../thunar/thunar-shortcuts-view.c:1626
+#: ../thunar/thunar-shortcuts-view.c:1629
 #, c-format
 msgid "The path \"%s\" does not refer to a directory"
 msgstr "พาธ \"%s\" ไม่ใช่ไดเรกทอรี"
 
 #. display an error message to the user
-#: ../thunar/thunar-shortcuts-view.c:1646
+#: ../thunar/thunar-shortcuts-view.c:1649
 msgid "Failed to add new shortcut"
 msgstr "เพิ่มจุดลัดใหม่ไม่สำเร็จ"
 
@@ -2769,7 +2781,11 @@ msgstr "สร้างลิงก์สำหรับ URL \"%s\" ไม่ส
 msgid "Failed to open directory \"%s\""
 msgstr "เปิดไดเรกทอรี \"%s\" ไม่สำเร็จ"
 
-#: ../thunar/thunar-transfer-job.c:1067
+#: ../thunar/thunar-transfer-job.c:548
+msgid "Comparing checksums..."
+msgstr ""
+
+#: ../thunar/thunar-transfer-job.c:1128
 #, c-format
 msgid ""
 "Error while copying to \"%s\": %s more space is required to copy to the "
@@ -2777,57 +2793,57 @@ msgid ""
 msgstr "เกิดข้อผิดพลาดขณะคัดลอกไปยัง \"%s\": ต้องการเนื้อที่อีก %s เพื่อจะคัดลอกไปยังปลายทางได้"
 
 #. update progress information
-#: ../thunar/thunar-transfer-job.c:1101
+#: ../thunar/thunar-transfer-job.c:1162
 #, c-format
 msgid "Trying to restore \"%s\""
 msgstr "กำลังพยายามกู้คืน \"%s\""
 
-#: ../thunar/thunar-transfer-job.c:1130
+#: ../thunar/thunar-transfer-job.c:1191
 #, c-format
 msgid ""
 "The folder \"%s\" does not exist anymore but is required to restore the file"
 " \"%s\" from the trash"
 msgstr "โฟลเดอร์ \"%s\" ไม่มีอยู่อีกต่อไปแล้ว แต่ต้องใช้ในการกู้คืนแฟ้ม \"%s\" จากถังขยะ"
 
-#: ../thunar/thunar-transfer-job.c:1157
+#: ../thunar/thunar-transfer-job.c:1218
 #, c-format
 msgid "Failed to restore the folder \"%s\""
 msgstr "กู้คืนโฟลเดอร์ \"%s\" ไม่สำเร็จ"
 
 #. update progress information
-#: ../thunar/thunar-transfer-job.c:1232
+#: ../thunar/thunar-transfer-job.c:1293
 #, c-format
 msgid "Trying to move \"%s\""
 msgstr "กำลังพยายามย้าย \"%s\""
 
 #. update progress information
-#: ../thunar/thunar-transfer-job.c:1310
+#: ../thunar/thunar-transfer-job.c:1369
 #, c-format
 msgid "Could not move \"%s\" directly. Collecting files for copying..."
 msgstr "ไม่สามารถย้าย \"%s\" ตรงๆ ได้ กำลังรวบรวมแฟ้มเพื่อคัดลอก..."
 
-#: ../thunar/thunar-transfer-job.c:1594
+#: ../thunar/thunar-transfer-job.c:1653
 msgid "Collecting files..."
 msgstr "กำลังรวบรวมแฟ้ม..."
 
-#: ../thunar/thunar-transfer-job.c:1793
+#: ../thunar/thunar-transfer-job.c:1852
 #, c-format
 msgid "%s of %s"
 msgstr "%s จาก %s"
 
-#: ../thunar/thunar-transfer-job.c:1813
+#: ../thunar/thunar-transfer-job.c:1872
 #, c-format
 msgid "%lu hour remaining (%s/sec)"
 msgid_plural "%lu hours remaining (%s/sec)"
 msgstr[0] "เหลืออีก %lu ชั่วโมง (%s/วิ)"
 
-#: ../thunar/thunar-transfer-job.c:1821
+#: ../thunar/thunar-transfer-job.c:1880
 #, c-format
 msgid "%lu minute remaining (%s/sec)"
 msgid_plural "%lu minutes remaining (%s/sec)"
 msgstr[0] "เหลืออีก %lu นาที (%s/วิ)"
 
-#: ../thunar/thunar-transfer-job.c:1828
+#: ../thunar/thunar-transfer-job.c:1887
 #, c-format
 msgid "%lu second remaining (%s/sec)"
 msgid_plural "%lu seconds remaining (%s/sec)"