diff --git a/locale/es.mo b/locale/es.mo
new file mode 100644
index 0000000..9b6b1a1
Binary files /dev/null and b/locale/es.mo differ
diff --git a/locale/es.po b/locale/es.po
new file mode 100644
index 0000000..4f43435
--- /dev/null
+++ b/locale/es.po
@@ -0,0 +1,76 @@
+# Spanish translations for PACKAGE package
+# Traducciones al español para el paquete PACKAGE.
+# Copyright (C) 2014 THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# José Carlos Cuevas <reset@localhost>, 2014.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2014-07-14 12:21+0200\n"
+"PO-Revision-Date: 2014-07-14 12:24+0100\n"
+"Last-Translator: José Carlos Cuevas <reset@localhost>\n"
+"Language-Team: Spanish\n"
+"Language: es\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Generator: Poedit 1.5.4\n"
+
+#: jsoninspector.py:81
+msgid "Open JSON text file"
+msgstr "Abrir fichero de texto JSON"
+
+#: jsoninspector.py:104
+msgid "No JSON loaded."
+msgstr "No se ha cargado JSON."
+
+#: jsoninspector.py:152
+msgid "Loaded from the clipboard."
+msgstr "Cargado desde el portapapeles."
+
+#: jsoninspector.py:194
+msgid "Not valid JSON!\n"
+msgstr "JSON no válido!\n"
+
+#: jsoninspector.py:210
+msgid "Not valid JSON"
+msgstr "JSON no válido"
+
+#: jsoninspector.glade.h:1
+msgid "Enter JSON Text"
+msgstr "Introduzca texto JSON"
+
+#: jsoninspector.glade.h:2
+msgid "JSON Inspector"
+msgstr "JSON Inspector"
+
+#: jsoninspector.glade.h:3
+msgid "_File"
+msgstr "_Archivo"
+
+#: jsoninspector.glade.h:4
+msgid "Cop_y JSON"
+msgstr "Cop_iar JSON"
+
+#: jsoninspector.glade.h:5
+msgid "_Help"
+msgstr "A_yuda"
+
+#: jsoninspector.glade.h:6
+msgid "Node"
+msgstr "Nodo"
+
+#: jsoninspector.glade.h:7
+msgid "Value"
+msgstr "Valor"
+
+#: jsoninspector.glade.h:8
+msgid "Type"
+msgstr "Tipo"
+
+#: jsoninspector.glade.h:9
+msgid "No JSON loaded"
+msgstr "No se ha cargado JSON"
diff --git a/locale/messages.pot b/locale/messages.pot
new file mode 100644
index 0000000..a26cba8
--- /dev/null
+++ b/locale/messages.pot
@@ -0,0 +1,74 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2014-07-14 12:21+0200\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: jsoninspector.py:81
+msgid "Open JSON text file"
+msgstr ""
+
+#: jsoninspector.py:104
+msgid "No JSON loaded."
+msgstr ""
+
+#: jsoninspector.py:152
+msgid "Loaded from the clipboard."
+msgstr ""
+
+#: jsoninspector.py:194
+msgid "Not valid JSON!\n"
+msgstr ""
+
+#: jsoninspector.py:210
+msgid "Not valid JSON"
+msgstr ""
+
+#: jsoninspector.glade.h:1
+msgid "Enter JSON Text"
+msgstr ""
+
+#: jsoninspector.glade.h:2
+msgid "JSON Inspector"
+msgstr ""
+
+#: jsoninspector.glade.h:3
+msgid "_File"
+msgstr ""
+
+#: jsoninspector.glade.h:4
+msgid "Cop_y JSON"
+msgstr ""
+
+#: jsoninspector.glade.h:5
+msgid "_Help"
+msgstr ""
+
+#: jsoninspector.glade.h:6
+msgid "Node"
+msgstr ""
+
+#: jsoninspector.glade.h:7
+msgid "Value"
+msgstr ""
+
+#: jsoninspector.glade.h:8
+msgid "Type"
+msgstr ""
+
+#: jsoninspector.glade.h:9
+msgid "No JSON loaded"
+msgstr ""
diff --git a/locale/po/es/LC_MESSAGES/jsoninspector.mo b/locale/po/es/LC_MESSAGES/jsoninspector.mo
new file mode 100644
index 0000000..9b6b1a1
Binary files /dev/null and b/locale/po/es/LC_MESSAGES/jsoninspector.mo differ
diff --git a/src/jsoninspector.glade b/src/jsoninspector.glade
index 69a574f..1d71168 100644
--- a/src/jsoninspector.glade
+++ b/src/jsoninspector.glade
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Generated with glade 3.16.1 -->
-<interface>
-  <requires lib="gtk+" version="3.0"/>
+<interface domain="jsoninspector">
+  <requires lib="gtk+" version="3.6"/>
   <object class="GtkWindow" id="TextWindow">
     <property name="can_focus">False</property>
-    <property name="title" translatable="yes">Introducir texto JSON</property>
+    <property name="title" translatable="yes">Enter JSON Text</property>
     <property name="modal">True</property>
     <property name="window_position">center</property>
     <property name="default_width">200</property>
@@ -48,6 +48,7 @@
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
                 <property name="use_stock">True</property>
+                <property name="always_show_image">True</property>
                 <signal name="clicked" handler="onCopyJSONCancelClicked" swapped="no"/>
               </object>
               <packing>
@@ -65,6 +66,7 @@
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
                 <property name="use_stock">True</property>
+                <property name="always_show_image">True</property>
                 <signal name="clicked" handler="onCopyJSONAcceptClicked" swapped="no"/>
               </object>
               <packing>
@@ -246,7 +248,7 @@
                 <child>
                   <object class="GtkTreeViewColumn" id="treeviewcolumn1">
                     <property name="resizable">True</property>
-                    <property name="title">Nodo</property>
+                    <property name="title" translatable="yes">Node</property>
                     <property name="expand">True</property>
                     <property name="clickable">True</property>
                     <property name="sort_column_id">0</property>
@@ -255,14 +257,14 @@
                 <child>
                   <object class="GtkTreeViewColumn" id="treeviewcolumn2">
                     <property name="resizable">True</property>
-                    <property name="title">Valor</property>
+                    <property name="title" translatable="yes">Value</property>
                     <property name="expand">True</property>
                   </object>
                 </child>
                 <child>
                   <object class="GtkTreeViewColumn" id="treeviewcolumn3">
                     <property name="resizable">True</property>
-                    <property name="title">Tipo</property>
+                    <property name="title" translatable="yes">Type</property>
                     <property name="expand">True</property>
                   </object>
                 </child>
@@ -284,7 +286,7 @@
               <object class="GtkLabel" id="StatusLabel">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="label" translatable="yes">No hay JSON cargado</property>
+                <property name="label" translatable="yes">No JSON loaded</property>
                 <attributes>
                   <attribute name="gravity" value="west"/>
                 </attributes>
diff --git a/src/jsoninspector.py b/src/jsoninspector.py
index fd027a4..efbc4d3 100644
--- a/src/jsoninspector.py
+++ b/src/jsoninspector.py
@@ -2,17 +2,37 @@
 # -*- coding: utf-8 -*-
 
 from pkg_resources import resource_filename
+from gi.repository import Gtk, Gdk, Gio
 
 import json
 
-from gi.repository import Gtk, Gdk, Gio
+# Internationalization support
+import gettext
+import locale
+
+APP = "jsoninspector"
+DIR = "po"
+
+locale.setlocale(locale.LC_ALL, '')
+
+try:
+    gettext.bindtextdomain(APP, DIR)
+    locale.bindtextdomain(APP, DIR)
+
+except:
+    gettext.bindtextdomain(APP, "../locale/")
+    locale.bindtextdomain(APP, "../locale/")
+
+gettext.textdomain(APP)
+_ = gettext.gettext
+
 
 class MainWindowMethods(Gtk.Application):
     """
     Main Application object with the main window signals
     """
     def __init__(self, logic):
-        Gtk.Application.__init__(self, application_id = "apps.gnome.stevedore",
+        Gtk.Application.__init__(self, application_id = "apps.gnome.jsoninspector",
                                  flags = Gio.ApplicationFlags.FLAGS_NONE)
 
         # We store the reference to the app logic
@@ -25,6 +45,7 @@ class MainWindowMethods(Gtk.Application):
         Loads the MainWindow widgets, shows it up and starts the main loop
         """
         self.builder = Gtk.Builder()
+        self.builder.set_translation_domain(APP)
         self.builder.add_from_file(resource_filename(__name__,'jsoninspector.glade'))
         self.builder.connect_signals(self)
 
@@ -57,7 +78,7 @@ class MainWindowMethods(Gtk.Application):
         User has pressed Open in the menu
         """
         # Create the FileChooser Dialog
-        chooser = Gtk.FileChooserDialog("Open JSON text file", self.window,
+        chooser = Gtk.FileChooserDialog(_("Open JSON text file"), self.window,
                                         Gtk.FileChooserAction.OPEN,
                                         (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
                                         Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
@@ -80,7 +101,7 @@ class MainWindowMethods(Gtk.Application):
                 
             else:
                 
-                label.set_text("No hay JSON cargado")
+                label.set_text(_("No JSON loaded."))
 
         # We finish the dialog
         chooser.destroy()
@@ -128,7 +149,7 @@ class MainWindowMethods(Gtk.Application):
         if self.logicObj.loadJSONText(jsonText):
             
             status_label = self.builder.get_object("StatusLabel") 
-            status_label.set_text("Cargado desde portapapeles.")
+            status_label.set_text(_("Loaded from the clipboard."))
             self.logicObj.loadTree(treestore)
 
     def onCopyJSONCancelClicked(self, widget):
@@ -170,7 +191,7 @@ class LogicObject(object):
         try:
             self.json = json.loads(f.read())
         except ValueError:
-            print "JSON no válido!\n"
+            print _("Not valid JSON!\n")
             self.json = None
             f.close()
 
@@ -186,7 +207,7 @@ class LogicObject(object):
         try:
             self.json = json.loads(text)
         except ValueError:
-            print "JSON no válido"
+            print _("Not valid JSON")
             self.json = None
             
             return False
diff --git a/util/gen_pot.sh b/util/gen_pot.sh
new file mode 100755
index 0000000..6bcfabf
--- /dev/null
+++ b/util/gen_pot.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+intltool-extract --type="gettext/glade" *.glade
+xgettext -k_ -kN_ -o messages.pot *.py *.h
+