diff --git a/frontend/src/components/context-menu/context-menu.js b/frontend/src/components/context-menu/context-menu.js
index 777b579c91..4a14a18e74 100644
--- a/frontend/src/components/context-menu/context-menu.js
+++ b/frontend/src/components/context-menu/context-menu.js
@@ -1,5 +1,6 @@
 import React from 'react';
 import PropTypes from 'prop-types';
+import { Dropdown, DropdownMenu, DropdownToggle, DropdownItem } from 'reactstrap';
 import listener from './globalEventListener';
 import { hideMenu } from './actions';
 import { callIfExists } from './helpers';
@@ -24,6 +25,8 @@ class ContextMenu extends React.Component {
       isVisible: false,
       currentObject: null,
       menuList: [],
+      isSubMenuShown: false,
+      currentItem: ''
     };
   }
 
@@ -183,6 +186,28 @@ class ContextMenu extends React.Component {
     event.stopPropagation();
   };
 
+  onDropDownMouseMove = (e) => {
+    if (this.state.isSubMenuShown && e.target && e.target.className === 'dropdown-item') {
+      this.setState({
+        isSubMenuShown: false
+      });
+    }
+  };
+
+  toggleSubMenu = (e) => {
+    e.stopPropagation();
+    this.setState({
+      isSubMenuShown: !this.state.isSubMenuShown
+    });
+  };
+
+  toggleSubMenuShown = (item) => {
+    this.setState({
+      isSubMenuShown: true,
+      currentItem: item.key
+    });
+  };
+
   render() {
     const inlineStyle = { position: 'fixed', opacity: 0, pointerEvents: 'none', display: 'block' };
     return (
@@ -190,6 +215,37 @@ class ContextMenu extends React.Component {
         {this.state.menuList.map((menuItem, index) => {
           if (menuItem === 'Divider') {
             return <div key={index} className="seafile-divider dropdown-divider"></div>;
+          } else if (menuItem.subOpList) {
+            return (
+              <Dropdown
+                key={index}
+                direction="right"
+                className="w-100"
+                isOpen={this.state.isSubMenuShown && this.state.currentItem == menuItem.key}
+                toggle={this.toggleSubMenu}
+                onMouseMove={(e) => {e.stopPropagation();}}
+              >
+                <DropdownToggle
+                  tag='div'
+                  className="dropdown-item font-weight-normal rounded-0 d-flex align-items-center"
+                  onMouseEnter={this.toggleSubMenuShown.bind(this, menuItem)}
+                >
+                  <span className="mr-auto">{menuItem.value}</span>
+                  <i className="sf3-font-down sf3-font rotate-270"></i>
+                </DropdownToggle>
+                <DropdownMenu>
+                  {menuItem.subOpList.map((item, index) => {
+                    if (item == 'Divider') {
+                      return <DropdownItem key={index} divider />;
+                    } else {
+                      return (
+                        <DropdownItem key={index} data-operation={item.key} onClick={this.onMenuItemClick} onContextMenu={this.onContextMenu}>{item.value}</DropdownItem>
+                      );
+                    }
+                  })}
+                </DropdownMenu>
+              </Dropdown>
+            );
           } else {
             return (
               <button
diff --git a/frontend/src/components/dropdown-menu/item-dropdown-menu.js b/frontend/src/components/dropdown-menu/item-dropdown-menu.js
index 2633bd760a..f631deabd6 100644
--- a/frontend/src/components/dropdown-menu/item-dropdown-menu.js
+++ b/frontend/src/components/dropdown-menu/item-dropdown-menu.js
@@ -35,6 +35,8 @@ class ItemDropdownMenu extends React.Component {
     this.state = {
       menuList: [],
       isItemMenuShow: false,
+      isSubMenuShown: false,
+      currentItem: ''
     };
   }
 
@@ -112,6 +114,28 @@ class ItemDropdownMenu extends React.Component {
     this.props.onMenuItemClick(operation, event, item);
   };
 
+  onDropDownMouseMove = (e) => {
+    if (this.state.isSubMenuShown && e.target && e.target.className === 'dropdown-item') {
+      this.setState({
+        isSubMenuShown: false
+      });
+    }
+  };
+
+  toggleSubMenu = (e) => {
+    e.stopPropagation();
+    this.setState({
+      isSubMenuShown: !this.state.isSubMenuShown
+    });
+  };
+
+  toggleSubMenuShown = (item) => {
+    this.setState({
+      isSubMenuShown: true,
+      currentItem: item.key
+    });
+  };
+
   render() {
     let menuList = this.state.menuList;
     let { toggleClass, toggleChildren, tagName, menuStyle } = this.props;
@@ -165,10 +189,44 @@ class ItemDropdownMenu extends React.Component {
           // onClick={this.onDropdownToggleClick}
         />
         <ModalPortal>
-          <DropdownMenu style={menuStyle}>
+          <DropdownMenu
+            style={menuStyle}
+            onMouseMove={this.onDropDownMouseMove}
+          >
             {menuList.map((menuItem, index) => {
               if (menuItem === 'Divider') {
                 return <DropdownItem key={index} divider />;
+              } else if (menuItem.subOpList) {
+                return (
+                  <Dropdown
+                    key={index}
+                    direction="right"
+                    className="w-100"
+                    isOpen={this.state.isSubMenuShown && this.state.currentItem == menuItem.key}
+                    toggle={this.toggleSubMenu}
+                    onMouseMove={(e) => {e.stopPropagation();}}
+                  >
+                    <DropdownToggle
+                      tag='div'
+                      className="dropdown-item font-weight-normal rounded-0 d-flex align-items-center"
+                      onMouseEnter={this.toggleSubMenuShown.bind(this, menuItem)}
+                    >
+                      <span className="mr-auto">{menuItem.value}</span>
+                      <i className="sf3-font-down sf3-font rotate-270"></i>
+                    </DropdownToggle>
+                    <DropdownMenu>
+                      {menuItem.subOpList.map((item, index) => {
+                        if (item == 'Divider') {
+                          return <DropdownItem key={index} divider />;
+                        } else {
+                          return (
+                            <DropdownItem key={index} data-toggle={item.key} onClick={this.onMenuItemClick} onKeyDown={this.onMenuItemKeyDown}>{item.value}</DropdownItem>
+                          );
+                        }
+                      })}
+                    </DropdownMenu>
+                  </Dropdown>
+                );
               } else {
                 return (
                   <DropdownItem className='p-0' key={index} data-toggle={menuItem.key} onClick={this.onMenuItemClick} onKeyDown={this.onMenuItemKeyDown}>
diff --git a/frontend/src/utils/text-translation.js b/frontend/src/utils/text-translation.js
index f3a05090b7..17a8f37fba 100644
--- a/frontend/src/utils/text-translation.js
+++ b/frontend/src/utils/text-translation.js
@@ -25,6 +25,7 @@ const TextTranslation = {
   'UNLOCK': { key: 'Unlock', value: gettext('Unlock') },
   'FREEZE_DOCUMENT': { key: 'Freeze Document', value: gettext('Freeze Document') },
   'UNFREEZE_DOCUMENT': { key: 'Unfreeze Document', value: gettext('Unfreeze Document') },
+  'CONVERT_AND_EXPORT': { key: 'Convert & Export', value: gettext('Convert & Export') },
   'CONVERT_TO_MARKDOWN': { key: 'Convert to Markdown', value: gettext('Convert to Markdown') },
   'CONVERT_TO_SDOC': { key: 'Convert to sdoc', value: gettext('Convert to sdoc') },
   'CONVERT_TO_DOCX': { key: 'Convert to docx', value: gettext('Convert to docx') },
diff --git a/frontend/src/utils/utils.js b/frontend/src/utils/utils.js
index 151f8f8669..da97818132 100644
--- a/frontend/src/utils/utils.js
+++ b/frontend/src/utils/utils.js
@@ -547,8 +547,11 @@ export const Utils = {
 
   getFileOperationList: function (isRepoOwner, currentRepoInfo, dirent, isContextmenu) {
     let list = [];
-    const { SHARE, DOWNLOAD, DELETE, RENAME, MOVE, COPY, TAGS, UNLOCK, LOCK, UNFREEZE_DOCUMENT, FREEZE_DOCUMENT,
-      HISTORY, ACCESS_LOG, PROPERTIES, OPEN_VIA_CLIENT, ONLYOFFICE_CONVERT, CONVERT_TO_MARKDOWN, CONVERT_TO_DOCX, EXPORT_DOCX, CONVERT_TO_SDOC } = TextTranslation;
+    const {
+      SHARE, DOWNLOAD, DELETE, RENAME, MOVE, COPY, TAGS, UNLOCK, LOCK, UNFREEZE_DOCUMENT, FREEZE_DOCUMENT,
+      HISTORY, ACCESS_LOG, PROPERTIES, OPEN_VIA_CLIENT, ONLYOFFICE_CONVERT,
+      CONVERT_AND_EXPORT, CONVERT_TO_MARKDOWN, CONVERT_TO_DOCX, EXPORT_DOCX, CONVERT_TO_SDOC
+    } = TextTranslation;
     const permission = dirent.permission;
     const { isCustomPermission, customPermission } = Utils.getUserPermission(permission);
 
@@ -637,9 +640,14 @@ export const Utils = {
       }
 
       if (dirent.name.endsWith('.sdoc')) {
-        list.push(CONVERT_TO_MARKDOWN);
-        list.push(CONVERT_TO_DOCX);
-        list.push(EXPORT_DOCX);
+        if (Utils.isDesktop()) {
+          let subOpList = [CONVERT_TO_MARKDOWN, CONVERT_TO_DOCX, EXPORT_DOCX];
+          list.push({ ...CONVERT_AND_EXPORT, subOpList });
+        } else {
+          list.push(CONVERT_TO_MARKDOWN);
+          list.push(CONVERT_TO_DOCX);
+          list.push(EXPORT_DOCX);
+        }
       }
     }