diff --git a/messages/renderer/en.json b/messages/renderer/en.json
index 298ce0ec9..b8a5ca4ed 100644
--- a/messages/renderer/en.json
+++ b/messages/renderer/en.json
@@ -56,6 +56,15 @@
   "renderer.components.MapFilter.Toolbar.exportButton": {
     "message": "Export data"
   },
+  "renderer.components.MapFilter.Toolbar.mapTabLabel": {
+    "message": "Map"
+  },
+  "renderer.components.MapFilter.Toolbar.mediaTabLabel": {
+    "message": "Media"
+  },
+  "renderer.components.MapFilter.Toolbar.reportTabLabel": {
+    "message": "Report"
+  },
   "renderer.components.SyncView.Searching.searchingHint": {
     "description": "Hint on sync screen when searching on wifi for devices",
     "message": "Make sure devices are turned on and connected to the same wifi network"
diff --git a/messages/renderer/es.json b/messages/renderer/es.json
index bb1566b77..c9c857074 100644
--- a/messages/renderer/es.json
+++ b/messages/renderer/es.json
@@ -19,7 +19,7 @@
   },
   "renderer.components.MapFilter.Loading.loading": {
     "description": "Displayed whilst observations and presets load",
-    "message": ""
+    "message": "Cargando…"
   },
   "renderer.components.MapFilter.MapExportDialog.cancel": {
     "description": "cancel button",
@@ -54,67 +54,76 @@
     "message": "Título de este mapa"
   },
   "renderer.components.MapFilter.Toolbar.exportButton": {
-    "message": ""
+    "message": "Exportar"
+  },
+  "renderer.components.MapFilter.Toolbar.mapTabLabel": {
+    "message": "Mapa"
+  },
+  "renderer.components.MapFilter.Toolbar.mediaTabLabel": {
+    "message": "Fotos"
+  },
+  "renderer.components.MapFilter.Toolbar.reportTabLabel": {
+    "message": "Informe"
   },
   "renderer.components.SyncView.Searching.searchingHint": {
     "description": "Hint on sync screen when searching on wifi for devices",
-    "message": ""
+    "message": "Asegurar que los equipos están encendidos y conectados a la misma red de wifi"
   },
   "renderer.components.SyncView.Searching.searchingTitle": {
     "description": "Title on sync screen when searching for devices",
-    "message": ""
+    "message": "Buscando…"
   },
   "renderer.components.SyncView.SyncAppBar.newSyncfile": {
     "description": "Button to create a new sync file",
-    "message": ""
+    "message": "Crear nuevo archivo de sincronización"
   },
   "renderer.components.SyncView.SyncAppBar.selectSyncfile": {
     "description": "Button to sync from an existing sync file",
-    "message": ""
+    "message": "Sincronizar con archivo"
   },
   "renderer.components.SyncView.SyncAppBar.subtitle": {
-    "message": ""
+    "message": "por wifi"
   },
   "renderer.components.SyncView.SyncAppBar.title": {
     "description": "Title of sync screen",
-    "message": ""
+    "message": "Equipo disponibles"
   },
   "renderer.components.SyncView.SyncButton.complete": {
     "description": "Button when sync is complete",
-    "message": ""
+    "message": "Completo"
   },
   "renderer.components.SyncView.SyncButton.retry": {
     "description": "Button to retry sync after error",
-    "message": ""
+    "message": "Reintentar"
   },
   "renderer.components.SyncView.SyncButton.starting": {
     "description": "Displayed when sync is starting",
-    "message": ""
+    "message": "Iniciando…"
   },
   "renderer.components.SyncView.SyncButton.sync": {
     "description": "Button to sync a device",
-    "message": ""
+    "message": "Sincronizar"
   },
   "renderer.components.SyncView.SyncTarget.database": {
     "description": "Prompt of how many database objects have synced",
-    "message": ""
+    "message": "Datos: {sofar} / {total}"
   },
   "renderer.components.SyncView.SyncTarget.errorMsg": {
     "description": "Message shown when there is an error while syncing",
-    "message": ""
+    "message": "Error de sicronización"
   },
   "renderer.components.SyncView.SyncTarget.lastSync": {
     "description": "Shown before last sync time, e.g. 'Last synchronized: 2 hours ago'",
-    "message": ""
+    "message": "Ultima sincronización"
   },
   "renderer.components.SyncView.SyncTarget.media": {
     "description": "Prompt for how many media items have synced",
-    "message": ""
+    "message": "Fotos: {sofar} / {total}"
   },
   "renderer.components.dialogs.LatLon.button-submit": {
-    "message": ""
+    "message": "Ir"
   },
   "renderer.components.dialogs.LatLon.dialog-enter-latlon-coordinates": {
-    "message": ""
+    "message": "Ingresar coordenadas"
   }
 }
diff --git a/messages/renderer/pt.json b/messages/renderer/pt.json
index 4d54f0756..f5112231d 100644
--- a/messages/renderer/pt.json
+++ b/messages/renderer/pt.json
@@ -56,6 +56,15 @@
   "renderer.components.MapFilter.Toolbar.exportButton": {
     "message": ""
   },
+  "renderer.components.MapFilter.Toolbar.mapTabLabel": {
+    "message": ""
+  },
+  "renderer.components.MapFilter.Toolbar.mediaTabLabel": {
+    "message": ""
+  },
+  "renderer.components.MapFilter.Toolbar.reportTabLabel": {
+    "message": ""
+  },
   "renderer.components.SyncView.Searching.searchingHint": {
     "description": "Hint on sync screen when searching on wifi for devices",
     "message": ""
diff --git a/package.json b/package.json
index 0c50a8f43..f543b0036 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,8 @@
     "clean": "rimraf \"dist/\"",
     "pack": "electron-builder --dir",
     "dist": "electron-builder --publish=onTag",
-    "build": "webpack",
+    "build": "npm run build:translations && webpack",
+    "build:translations": "bin/build-translations.js",
     "lint": "standard",
     "test": "npm run lint && npm run test-integration",
     "test-integration": "tape test",
diff --git a/src/renderer/app.js b/src/renderer/app.js
index 38e1e4fce..31b6b504a 100644
--- a/src/renderer/app.js
+++ b/src/renderer/app.js
@@ -9,11 +9,29 @@ import Home from './components/HomeNew'
 
 const locale = navigator.language.slice(0, 2)
 
+const mdMsgs = {
+  en: require('../../translations/en.json'),
+  es: require('../../translations/es.json'),
+  pt: require('../../translations/pt.json')
+}
+
+const mfMsgs = {
+  en: require('react-mapfilter/translations/en.json'),
+  es: require('react-mapfilter/translations/es.json'),
+  pt: require('react-mapfilter/translations/pt.json')
+}
+
+const allMsgs = {
+  en: { ...mdMsgs.en, ...mfMsgs.en },
+  es: { ...mdMsgs.es, ...mfMsgs.es },
+  pt: { ...mdMsgs.pt, ...mfMsgs.pt }
+}
+
 const App = () => (
   <StylesProvider injectFirst>
     <ThemeProvider theme={theme}>
       <CssBaseline />
-      <IntlProvider locale={locale}>
+      <IntlProvider locale={locale} messages={allMsgs[locale]}>
         <Home />
       </IntlProvider>
     </ThemeProvider>
@@ -22,7 +40,7 @@ const App = () => (
 
 ReactDOM.render(<App />, document.getElementById('root'))
 
-let localStorage = window.localStorage
+const localStorage = window.localStorage
 window.testMode = function () {
   console.log('Test mode, clearing cache')
   localStorage.removeItem('lastView')
diff --git a/src/renderer/components/MapFilter/Toolbar.js b/src/renderer/components/MapFilter/Toolbar.js
index 37a4c4352..5501704d8 100644
--- a/src/renderer/components/MapFilter/Toolbar.js
+++ b/src/renderer/components/MapFilter/Toolbar.js
@@ -15,7 +15,10 @@ import clsx from 'clsx'
 import MapExportDialog from './MapExportDialog'
 
 const m = defineMessages({
-  exportButton: 'Export data'
+  exportButton: 'Export data',
+  mapTabLabel: 'Map',
+  mediaTabLabel: 'Media',
+  reportTabLabel: 'Report'
 })
 
 const TabItem = ({ selected, ...props }) => {
@@ -58,7 +61,7 @@ const MapFilterToolbar = ({
               onClick={handleChange('map')}
             >
               <MapIcon />
-              <span className={cx.tabLabel}>Map</span>
+              <span className={cx.tabLabel}>{t(m.mapTabLabel)}</span>
             </TabItem>
             <TabItem
               aria-label='media view'
@@ -66,7 +69,7 @@ const MapFilterToolbar = ({
               onClick={handleChange('media')}
             >
               <MediaIcon />
-              <span className={cx.tabLabel}>Media</span>
+              <span className={cx.tabLabel}>{t(m.mediaTabLabel)}</span>
             </TabItem>
             <TabItem
               aria-label='report view'
@@ -74,7 +77,7 @@ const MapFilterToolbar = ({
               onClick={handleChange('report')}
             >
               <ReportIcon />
-              <span className={cx.tabLabel}>Report</span>
+              <span className={cx.tabLabel}>{t(m.reportTabLabel)}</span>
             </TabItem>
           </div>
           <Tooltip title={t(m.exportButton)}>
diff --git a/translations/en.json b/translations/en.json
index b37da5906..c87604846 100644
--- a/translations/en.json
+++ b/translations/en.json
@@ -14,6 +14,9 @@
   "renderer.components.MapFilter.MapExportDialog.title": "Export a map to share online",
   "renderer.components.MapFilter.MapExportDialog.titleLabel": "Map Title",
   "renderer.components.MapFilter.Toolbar.exportButton": "Export data",
+  "renderer.components.MapFilter.Toolbar.mapTabLabel": "Map",
+  "renderer.components.MapFilter.Toolbar.mediaTabLabel": "Media",
+  "renderer.components.MapFilter.Toolbar.reportTabLabel": "Report",
   "renderer.components.SyncView.Searching.searchingHint": "Make sure devices are turned on and connected to the same wifi network",
   "renderer.components.SyncView.Searching.searchingTitle": "Searching…",
   "renderer.components.SyncView.SyncAppBar.newSyncfile": "Create new syncfile…",
diff --git a/translations/es.json b/translations/es.json
index d38402bbc..38be66aa5 100644
--- a/translations/es.json
+++ b/translations/es.json
@@ -4,7 +4,7 @@
   "renderer.components.HomeNew.sync": "Síncronizar",
   "renderer.components.MapEditor.feedback-contribute-button": "",
   "renderer.components.MapFilter.FilterPanel.filterHeader": "Filtrar datos…",
-  "renderer.components.MapFilter.Loading.loading": "",
+  "renderer.components.MapFilter.Loading.loading": "Cargando…",
   "renderer.components.MapFilter.MapExportDialog.cancel": "Cancelar",
   "renderer.components.MapFilter.MapExportDialog.descriptionLabel": "Descripción de este mapa",
   "renderer.components.MapFilter.MapExportDialog.save": "Guardar",
@@ -13,21 +13,24 @@
   "renderer.components.MapFilter.MapExportDialog.termsLabel": "",
   "renderer.components.MapFilter.MapExportDialog.title": "Exportar un mapa para compartir en el internet",
   "renderer.components.MapFilter.MapExportDialog.titleLabel": "Título de este mapa",
-  "renderer.components.MapFilter.Toolbar.exportButton": "",
-  "renderer.components.SyncView.Searching.searchingHint": "",
-  "renderer.components.SyncView.Searching.searchingTitle": "",
-  "renderer.components.SyncView.SyncAppBar.newSyncfile": "",
-  "renderer.components.SyncView.SyncAppBar.selectSyncfile": "",
-  "renderer.components.SyncView.SyncAppBar.subtitle": "",
-  "renderer.components.SyncView.SyncAppBar.title": "",
-  "renderer.components.SyncView.SyncButton.complete": "",
-  "renderer.components.SyncView.SyncButton.retry": "",
-  "renderer.components.SyncView.SyncButton.starting": "",
-  "renderer.components.SyncView.SyncButton.sync": "",
-  "renderer.components.SyncView.SyncTarget.database": "",
-  "renderer.components.SyncView.SyncTarget.errorMsg": "",
-  "renderer.components.SyncView.SyncTarget.lastSync": "",
-  "renderer.components.SyncView.SyncTarget.media": "",
-  "renderer.components.dialogs.LatLon.button-submit": "",
-  "renderer.components.dialogs.LatLon.dialog-enter-latlon-coordinates": ""
+  "renderer.components.MapFilter.Toolbar.exportButton": "Exportar",
+  "renderer.components.MapFilter.Toolbar.mapTabLabel": "Mapa",
+  "renderer.components.MapFilter.Toolbar.mediaTabLabel": "Fotos",
+  "renderer.components.MapFilter.Toolbar.reportTabLabel": "Informe",
+  "renderer.components.SyncView.Searching.searchingHint": "Asegurar que los equipos están encendidos y conectados a la misma red de wifi",
+  "renderer.components.SyncView.Searching.searchingTitle": "Buscando…",
+  "renderer.components.SyncView.SyncAppBar.newSyncfile": "Crear nuevo archivo de sincronización",
+  "renderer.components.SyncView.SyncAppBar.selectSyncfile": "Sincronizar con archivo",
+  "renderer.components.SyncView.SyncAppBar.subtitle": "por wifi",
+  "renderer.components.SyncView.SyncAppBar.title": "Equipo disponibles",
+  "renderer.components.SyncView.SyncButton.complete": "Completo",
+  "renderer.components.SyncView.SyncButton.retry": "Reintentar",
+  "renderer.components.SyncView.SyncButton.starting": "Iniciando…",
+  "renderer.components.SyncView.SyncButton.sync": "Sincronizar",
+  "renderer.components.SyncView.SyncTarget.database": "Datos: {sofar} / {total}",
+  "renderer.components.SyncView.SyncTarget.errorMsg": "Error de sicronización",
+  "renderer.components.SyncView.SyncTarget.lastSync": "Ultima sincronización",
+  "renderer.components.SyncView.SyncTarget.media": "Fotos: {sofar} / {total}",
+  "renderer.components.dialogs.LatLon.button-submit": "Ir",
+  "renderer.components.dialogs.LatLon.dialog-enter-latlon-coordinates": "Ingresar coordenadas"
 }
\ No newline at end of file
diff --git a/translations/pt.json b/translations/pt.json
index 664493a45..b96786600 100644
--- a/translations/pt.json
+++ b/translations/pt.json
@@ -14,6 +14,9 @@
   "renderer.components.MapFilter.MapExportDialog.title": "",
   "renderer.components.MapFilter.MapExportDialog.titleLabel": "",
   "renderer.components.MapFilter.Toolbar.exportButton": "",
+  "renderer.components.MapFilter.Toolbar.mapTabLabel": "",
+  "renderer.components.MapFilter.Toolbar.mediaTabLabel": "",
+  "renderer.components.MapFilter.Toolbar.reportTabLabel": "",
   "renderer.components.SyncView.Searching.searchingHint": "",
   "renderer.components.SyncView.Searching.searchingTitle": "",
   "renderer.components.SyncView.SyncAppBar.newSyncfile": "",