diff --git a/CHANGELOG.md b/CHANGELOG.md
index 601dab51..b59a1118 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,19 +1,21 @@
 Changelog for Redmine DMSF
 ==========================
 
-3.0.13 ????-??-??
+3.0.13 *????-??-??*
 ------------------
 
     An option to disable the original module Documents in the plugin's settings
+    Documents preview available if the binary is available but not explicitly defined in the plugin's settings
+    Rubocop tests of the plugin's source codes
 
-3.0.12 2023-03-15
+3.0.12 *2023-03-15*
 ------------------
 
     Bug fixing
 
 * Bug: #1436 - Cannot upload new content
 
-3.0.11 2023-03-14
+3.0.11 *2023-03-14*
 ------------------
 
     Bug fixing
diff --git a/app/controllers/dmsf_context_menus_controller.rb b/app/controllers/dmsf_context_menus_controller.rb
index 00f93122..8e4489ab 100644
--- a/app/controllers/dmsf_context_menus_controller.rb
+++ b/app/controllers/dmsf_context_menus_controller.rb
@@ -37,6 +37,7 @@ class DmsfContextMenusController < ApplicationController
       @unlockable = @allowed && @dmsf_file.unlockable? && (!@dmsf_file.locked_for_user? ||
           User.current.allowed_to?(:force_file_unlock, @project))
       @email_allowed = User.current.allowed_to?(:email_documents, @project)
+      @preview = RedmineDmsf::Preview.office_available? && Setting.plugin_redmine_dmsf['office_bin'].blank?
     elsif @dmsf_folder
       @locked = @dmsf_folder.locked?
       @project = @dmsf_folder.project
diff --git a/app/controllers/dmsf_files_controller.rb b/app/controllers/dmsf_files_controller.rb
index 30235d3a..057c264b 100644
--- a/app/controllers/dmsf_files_controller.rb
+++ b/app/controllers/dmsf_files_controller.rb
@@ -77,7 +77,7 @@ class DmsfFilesController < ApplicationController
     expires_in 0.years, 'must-revalidate' => true
     pdf_preview = (params[:disposition] != 'attachment') && params[:filename].blank? && @file.pdf_preview
     filename = filename_for_content_disposition(@revision.formatted_name(member))
-    if pdf_preview.present?
+    if pdf_preview.present? && (Setting.plugin_redmine_dmsf['office_bin'].present? || params[:preview].present?)
       basename = File.basename(filename, '.*')
       send_file pdf_preview, filename: "#{basename}.pdf", type: 'application/pdf', disposition: 'inline'
     else
diff --git a/app/views/dmsf_context_menus/_file.html.erb b/app/views/dmsf_context_menus/_file.html.erb
index dc853294..3f995ead 100644
--- a/app/views/dmsf_context_menus/_file.html.erb
+++ b/app/views/dmsf_context_menus/_file.html.erb
@@ -87,6 +87,12 @@
 <li>
   <%= render partial: 'dmsf_context_menus/watch', locals: { object: dmsf_file } %>
 </li>
+<% if @preview %>
+  <li>
+    <%= context_menu_link l(:label_preview), view_dmsf_file_path(dmsf_file, preview: true),
+                          class: 'icon icon-magnifier', disabled: false %>
+  </li>
+<% end %>
 <li>
   <%= context_menu_link l(:button_delete),
         dmsf_link ? dmsf_link_path(id: dmsf_link, folder_id: folder, back_url: back_url) : dmsf_file_path(id: dmsf_file,
diff --git a/app/views/dmsf_context_menus/dmsf.html.erb b/app/views/dmsf_context_menus/dmsf.html.erb
index 118c5abc..6d640082 100644
--- a/app/views/dmsf_context_menus/dmsf.html.erb
+++ b/app/views/dmsf_context_menus/dmsf.html.erb
@@ -23,7 +23,7 @@
     <%= render partial: 'file', locals: { project: @project, folder: @folder, dmsf_file: @dmsf_file,
                                           dmsf_link: @dmsf_link, locked: @locked, unlockable: @unlockable,
                                           allowed: @allowed, email_allowed: @email_allowed,
-                                          notifications: @notifications, back_url: @back_url } %>
+                                          notifications: @notifications, preview: @preview, back_url: @back_url } %>
   <% elsif @dmsf_folder %>
     <%= render partial: 'folder', locals: { project: @project, folder: @folder, dmsf_folder: @dmsf_folder,
                                             dmsf_link: @dmsf_link, locked: @locked, unlockable: @unlockable,
diff --git a/lib/redmine_dmsf/preview.rb b/lib/redmine_dmsf/preview.rb
index eea6438e..6bb8c6f5 100644
--- a/lib/redmine_dmsf/preview.rb
+++ b/lib/redmine_dmsf/preview.rb
@@ -27,7 +27,7 @@ module RedmineDmsf
     extend Redmine::Utils::Shell
     include Redmine::I18n
 
-    OFFICE_BIN = (Setting.plugin_redmine_dmsf['office_bin'] || 'libreoffice').freeze
+    OFFICE_BIN = (Setting.plugin_redmine_dmsf['office_bin'].presence || 'libreoffice').freeze
 
     def self.office_available?
       return @office_available if defined?(@office_available)