diff --git a/static/translations/messages_de.json b/static/translations/messages_de.json
index d60b1e5cb4a..53a3103593c 100644
--- a/static/translations/messages_de.json
+++ b/static/translations/messages_de.json
@@ -110,7 +110,7 @@
   "{_}": "{_}",
   "Home": "Startseite",
   "All messages": "Alle Nachrichten",
-  "Direct messages": "Direct messages",
+  "Direct messages": "Direktnachrichten",
   "Starred": "Markiert",
   "Mentions": "Erwähnungen",
   "Message": "Nachricht",
@@ -240,8 +240,8 @@
   "Jot down something": "Notiere dir etwas",
   "Message {recipient}": "Nachricht {recipient}",
   "{username} will not be notified unless you subscribe them to this stream.": "{username} wird nicht benachrichtigt, sofern du ihn nicht als Abonnenten dieses Streams einträgst.",
-  "Send direct message": "Send direct message",
-  "View direct messages": "View direct messages",
+  "Send direct message": "Direktnachricht senden",
+  "View direct messages": "Direktnachrichten anzeigen",
   "(This user has been deactivated)": "(Dieser Nutzeraccount wurde deaktiviert)",
   "(unknown user)": "(unbekannter Nutzer)",
   "Forgot password?": "Passwort vergessen?",
@@ -320,7 +320,7 @@
   "Public": "Öffentlich",
   "Notifications": "Benachrichtigungen",
   "Stream": "Stream",
-  "Direct message": "Direct message",
+  "Direct message": "Direktnachricht",
   "Edit stream": "Stream bearbeiten",
   "OK": "OK",
   "Please share the image from your browser": "Bitte teile das Bild aus deinem Browser.",
diff --git a/static/translations/messages_zh-Hans.json b/static/translations/messages_zh-Hans.json
index 297c7e531ee..1650cbedaf0 100644
--- a/static/translations/messages_zh-Hans.json
+++ b/static/translations/messages_zh-Hans.json
@@ -1,8 +1,8 @@
 {
-  "Please describe the problem.": "Please describe the problem.",
-  "If there are other details you would like to share, please write them here.": "If there are other details you would like to share, please write them here.",
-  "App version": "App version",
-  "Server version": "Server version",
+  "Please describe the problem.": "请描述问题。",
+  "If there are other details you would like to share, please write them here.": "若有其他您愿意分享的细节，请在这里写出。",
+  "App version": "应用版本",
+  "Server version": "服务器版本",
   "Active": "在线",
   "Idle": "空闲",
   "Offline": "已下线",
@@ -10,36 +10,36 @@
   "Quote and reply": "引用并回复",
   "{username} [said]({link_to_message}):": "{username}[发言道]({link_to_message})：",
   "[Quoting…]": "[引用…]",
-  "[Quoting ({serialNumber})…]": "[Quoting ({serialNumber})…]",
-  "Quote-and-reply failed": "Quote-and-reply failed",
-  "all": "all",
-  "everyone": "everyone",
+  "[Quoting ({serialNumber})…]": "[引用({serialNumber})...]",
+  "Quote-and-reply failed": "引用并回复失败",
+  "all": "所有",
+  "everyone": "每个人",
   "stream": "频道",
   "Notify stream": "提醒频道",
   "Notify recipients": "提醒收件人",
-  "Notify everyone": "Notify everyone",
-  "Cannot open image": "Cannot open image",
-  "Invalid image URL.": "Invalid image URL.",
-  "Cannot open link": "Cannot open link",
-  "Invalid URL.": "Invalid URL.",
-  "That message could not be found.": "That message could not be found.",
-  "That conversation could not be found.": "That conversation could not be found.",
-  "Those messages could not be found.": "Those messages could not be found.",
-  "Invisible mode": "Invisible mode",
-  "{num_of_people, plural,\n  one {This message has been <z-link>read</z-link> by {num_of_people} person:}\n  other {This message has been <z-link>read</z-link> by {num_of_people} people:}}": "{num_of_people, plural,\n  one {This message has been <z-link>read</z-link> by {num_of_people} person:} other {This message has been <z-link>read</z-link> by {num_of_people} people:}}",
-  "View read receipts": "View read receipts",
-  "Failed to show read receipts": "Failed to show read receipts",
-  "Read receipts": "Read receipts",
-  "Read receipts are not available for Notification Bot messages.": "Read receipts are not available for Notification Bot messages.",
-  "Could not load data.": "Could not load data.",
-  "Still working…": "Still working…",
-  "Updates may be delayed.": "Updates may be delayed.",
-  "No one has read this message yet.": "No one has read this message yet.",
+  "Notify everyone": "提醒每个人",
+  "Cannot open image": "无法打开图片",
+  "Invalid image URL.": "无效图片地址。",
+  "Cannot open link": "无法打开链接",
+  "Invalid URL.": "无效网址。",
+  "That message could not be found.": "找不到该消息。",
+  "That conversation could not be found.": "找不到该对话。",
+  "Those messages could not be found.": "找不到这些消息。",
+  "Invisible mode": "隐形模式",
+  "{num_of_people, plural,\n  one {This message has been <z-link>read</z-link> by {num_of_people} person:}\n  other {This message has been <z-link>read</z-link> by {num_of_people} people:}}": "{num_of_people, plural,\n  other {此消息已被{num_of_people}人<z-link>阅读</z-link>：}}",
+  "View read receipts": "查看阅读回执",
+  "Failed to show read receipts": "显示阅读回执失败",
+  "Read receipts": "阅读回执",
+  "Read receipts are not available for Notification Bot messages.": "提醒机器人消息不支持阅读回执。",
+  "Could not load data.": "无法加载数据。",
+  "Still working…": "继续工作...",
+  "Updates may be delayed.": "更新将推迟。",
+  "No one has read this message yet.": "尚无人阅读此消息。",
   "Confirm": "确认",
-  "Failed to attach your file.": "Failed to attach your file.",
-  "Failed to attach your files.": "Failed to attach your files.",
-  "Failed to attach some of your files.": "Failed to attach some of your files.",
-  "Configure permissions": "Configure permissions",
+  "Failed to attach your file.": "添加附件失败。",
+  "Failed to attach your files.": "添加附件失败。",
+  "Failed to attach some of your files.": "添加部分附件失败。",
+  "Configure permissions": "配置权限",
   "You": "你",
   "Discard changes": "放弃更改",
   "You have unsaved changes. Leave without saving?": "您有未保存的更改。不保存就离开？",
@@ -47,21 +47,21 @@
   "Cannot apply requested settings": "无法应用请求的设置",
   "Insufficient permission": "权限不足",
   "Web-public": "网络公开",
-  "Organization members can join (guests must be invited by a subscriber); anyone on the Internet can view complete message history without creating an account": "社群成员可以加入（客人必须由订阅者邀请）；互联网上的任何人都可以在不创建帐户的情况下查看完整的消息历史记录",
-  "Only organization administrators and owners can edit streams.": "Only organization administrators and owners can edit streams.",
-  "{realmName} only allows organization administrators or owners to make public streams.": "{realmName} only allows organization administrators or owners to make public streams.",
-  "{realmName} only allows organization moderators, administrators, or owners to make public streams.": "{realmName} only allows organization moderators, administrators, or owners to make public streams.",
-  "{realmName} only allows full organization members, moderators, administrators, or owners to make public streams.": "{realmName} only allows full organization members, moderators, administrators, or owners to make public streams.",
-  "{realmName} only allows organization members, moderators, administrators, or owners to make public streams.": "{realmName} only allows organization members, moderators, administrators, or owners to make public streams.",
-  "{realmName} only allows organization administrators or owners to make private streams.": "{realmName} only allows organization administrators or owners to make private streams.",
-  "{realmName} only allows organization moderators, administrators, or owners to make private streams.": "{realmName} only allows organization moderators, administrators, or owners to make private streams.",
-  "{realmName} only allows full organization members, moderators, administrators, or owners to make private streams.": "{realmName} only allows full organization members, moderators, administrators, or owners to make private streams.",
-  "{realmName} only allows organization members, moderators, administrators, or owners to make private streams.": "{realmName} only allows organization members, moderators, administrators, or owners to make private streams.",
+  "Organization members can join (guests must be invited by a subscriber); anyone on the Internet can view complete message history without creating an account": "组织成员可以加入（客人必须由订阅者邀请）；互联网上的任何人都可以在不创建账号的情况下查看完整的消息历史记录",
+  "Only organization administrators and owners can edit streams.": "只有组织管理员和拥有者才能编辑频道",
+  "{realmName} only allows organization administrators or owners to make public streams.": "{realmName} 仅允许组织管理员或所有者创建公开频道。",
+  "{realmName} only allows organization moderators, administrators, or owners to make public streams.": "{realmName} 仅允许组织版主、管理员或所有者创建公开频道。",
+  "{realmName} only allows full organization members, moderators, administrators, or owners to make public streams.": "{realmName} 仅允许组织正式成员、版主、管理员或所有者创建公开频道。",
+  "{realmName} only allows organization members, moderators, administrators, or owners to make public streams.": "{realmName} 仅允许组织成员、版主、管理员或所有者创建公开频道。",
+  "{realmName} only allows organization administrators or owners to make private streams.": "{realmName} 仅允许组织管理员或所有者创建私人频道。",
+  "{realmName} only allows organization moderators, administrators, or owners to make private streams.": "{realmName} 仅允许组织版主、管理员或所有者创建私人频道。",
+  "{realmName} only allows full organization members, moderators, administrators, or owners to make private streams.": "{realmName} 仅允许组织正式成员、版主、管理员或所有者创建私人频道。",
+  "{realmName} only allows organization members, moderators, administrators, or owners to make private streams.": "{realmName} 仅允许组织成员、版主、管理员或所有者创建私人频道。",
   "{realmName} does not allow anybody to make web-public streams.": "{realmName} 不允许任何人创建网络公共频道。",
   "{realmName} only allows organization owners to make web-public streams.": "{realmName} 仅允许组织所有者创建网络公共频道。",
   "{realmName} only allows organization administrators or owners to make web-public streams.": "{realmName} 仅允许组织管理员或所有者创建网络公开频道。",
   "{realmName} only allows organization moderators, administrators, or owners to make web-public streams.": "{realmName} 仅允许组织版主、管理员或所有者创建网络公开频道。",
-  "Organization members can join (guests must be invited by a subscriber); organization members can view complete message history without joining": "社群成员可以加入（客人必须由订阅者邀请）；社群成员无需加入即可查看完整的消息历史记录",
+  "Organization members can join (guests must be invited by a subscriber); organization members can view complete message history without joining": "组织成员可以加入（客人必须由订阅者邀请）；组织成员无需加入即可查看完整的消息历史记录",
   "Private, shared history": "私人的、共享的历史消息",
   "Must be invited by a subscriber; new subscribers can view complete message history; hidden from non-administrator users": "必须由订阅者邀请；新订阅者可以查看完整的消息历史记录；对非管理员用户隐藏",
   "Private, protected history": "私人的、受保护的历史消息",
@@ -76,9 +76,9 @@
   "Remind me later": "稍后提醒我",
   "The Zulip server at {realm} is not set up to deliver push notifications.": "{realm} 的 Zulip 服务器未设置推送通知。",
   "The Zulip server at {realm} is not set up to deliver push notifications. Please contact your administrator.": "{realm} 的 Zulip 服务器未设置推送通知。请联系您的管理员。",
-  "The Zulip server at {realm} has not yet registered your device token. A request is in progress.": "The Zulip server at {realm} has not yet registered your device token. A request is in progress.",
-  "The Zulip server at {realm} has not yet registered your device token.": "The Zulip server at {realm} has not yet registered your device token.",
-  "Registration failed": "Registration failed",
+  "The Zulip server at {realm} has not yet registered your device token. A request is in progress.": "{realm}上的Zulip服务器尚未针对你的设备令牌注册。正在提出请求。",
+  "The Zulip server at {realm} has not yet registered your device token.": "{realm}上的Zulip服务器尚未针对你的设备令牌注册。",
+  "Registration failed": "注册失败",
   "Retry": "重试",
   "Message not saved": "消息未保存",
   "Save message": "保存消息",
@@ -89,7 +89,7 @@
   "Open settings": "打开设置",
   "Camera unavailable.": "相机不可用。",
   "Error": "错误",
-  "The server sent a malformed response.": "The server sent a malformed response.",
+  "The server sent a malformed response.": "服务器发送了有格式错误的请求。",
   "Storage permission needed": "需要存储权限",
   "Zulip will save a copy of your photo on your device. To do so, Zulip will need permission to store files on your device.": "Zulip 会将您的照片副本保存在您的设备上。为此，Zulip 需要获得在您的设备上存储文件的权限。",
   "Message not sent": "消息未发送",
@@ -98,19 +98,19 @@
   "Please specify a valid stream.": "请指定一个有效的频道。",
   "Please choose recipients.": "请选择回复对象。",
   "Message is empty.": "消息为空。",
-  "Could not connect": "Could not connect",
-  "The server at {realm} said:\n\n{message}": "The server at {realm} said:\n\n{message}",
-  "Could not connect to {realm}. Please check your network connection and try again.": "Could not connect to {realm}. Please check your network connection and try again.",
-  "Server not supported": "Server not supported",
-  "{realm} is running Zulip Server {version}, which is unsupported. The minimum supported version is Zulip Server {minSupportedVersion}.": "{realm} is running Zulip Server {version}, which is unsupported. The minimum supported version is Zulip Server {minSupportedVersion}.",
-  "The server at {realm} does not seem to be a Zulip server.": "The server at {realm} does not seem to be a Zulip server.",
-  "Find your Zulip server URL": "Find your Zulip server URL",
+  "Could not connect": "无法连接",
+  "The server at {realm} said:\n\n{message}": "{realm}处服务器信息：\n\n{message}",
+  "Could not connect to {realm}. Please check your network connection and try again.": "无法连接到 {realm}。请检查网络连接后重试。",
+  "Server not supported": "服务器不支持",
+  "{realm} is running Zulip Server {version}, which is unsupported. The minimum supported version is Zulip Server {minSupportedVersion}.": " {realm}正在运行不受支持的Zulip服务器{version}。最早受支持Zulip服务器版本为{minSupportedVersion}。",
+  "The server at {realm} does not seem to be a Zulip server.": "{realm}处似乎没有Zulip服务器。",
+  "Find your Zulip server URL": "查找你的Zulip服务器网址",
   "The server at {realm} encountered an error.": "The server at {realm} encountered an error.",
   "Failed to connect to server: {realm}": "无法连接到服务器：{realm}",
   "{_}": "{_}",
   "Home": "主页",
   "All messages": "所有消息",
-  "Direct messages": "Direct messages",
+  "Direct messages": "私信",
   "Starred": "标星消息",
   "Mentions": "被提及消息",
   "Message": "信息",
@@ -178,12 +178,12 @@
   "{realm} is running Zulip Server {serverVersion}, which is unsupported. Please upgrade your server as soon as possible.": "{realm} 正在运行不受支持的 Zulip 服务器 {serverVersion}。请尽快升级您的服务器。",
   "{realm} is running Zulip Server {serverVersion}, which is unsupported. Please contact your administrator about upgrading.": "{realm} 正在运行不受支持的 Zulip 服务器 {serverVersion}。请联系您的管理员进行升级。",
   "Learn more": "了解更多",
-  "Full profile": "Full profile",
+  "Full profile": "全部资料",
   "Settings": "设置",
   "Night mode": "夜间模式",
   "Open links with in-app browser": "使用应用内浏览器打开链接",
   "Language": "语言",
-  "Arabic": "阿拉伯",
+  "Arabic": "阿拉伯语",
   "Luri (Bakhtiari)": "Luri (Bakhtiari)",
   "Belarusian": "Belarusian",
   "Bulgarian": "保加利亚语",
@@ -343,7 +343,7 @@
   "No reactions": "无回复",
   "See who reacted": "看看谁回复",
   "Muted user": "静音用户",
-  "Only organization admins are allowed to post to this stream.": "只有社群管理员可以发布到这个频道。",
+  "Only organization admins are allowed to post to this stream.": "只有组织管理员可以发布到这个频道。",
   "Connecting...": "正在连接...",
   "Set your status": "Set your status",
   "Muted": "静音",