diff --git a/l10n/pl/metadata.inc b/l10n/pl/metadata.inc
new file mode 100644
index 000000000..8d9d94b04
--- /dev/null
+++ b/l10n/pl/metadata.inc
@@ -0,0 +1,8 @@
+    <em:localized>
+      <Description>
+        <em:locale>en-US</em:locale>
+        <em:name>PDF Viewer</em:name>
+        <em:description>Uses HTML5 to display PDF files directly in Firefox.</em:description>
+      </Description>
+    </em:localized>
+
diff --git a/l10n/pl/viewer.properties b/l10n/pl/viewer.properties
new file mode 100644
index 000000000..ed632b17a
--- /dev/null
+++ b/l10n/pl/viewer.properties
@@ -0,0 +1,42 @@
+bookmark.title=Current view (copy or open in new window)
+previous.title=Previous Page
+next.title=Next Page
+print.title=Print
+download.title=Download
+zoom_out.title=Zoom Out
+zoom_in.title=Zoom In
+error_more_info=More Information
+error_less_info=Less Information
+error_close=Close
+error_build=PDF.JS Build: {{build}}
+error_message=Message: {{message}}
+error_stack=Stack: {{stack}}
+error_file=File: {{file}}
+error_line=Line: {{line}}
+page_scale_width=Page Width
+page_scale_fit=Page Fit
+page_scale_auto=Automatic Zoom
+page_scale_actual=Actual Size
+toggle_slider.title=Toggle Slider
+thumbs.title=Show Thumbnails
+outline.title=Show Document Outline
+loading=Loading... {{percent}}%
+loading_error_indicator=Error
+loading_error=An error occurred while loading the PDF.
+rendering_error=An error occurred while rendering the page.
+page_label=Page:
+page_of=of {{pageCount}}
+no_outline=No Outline Available
+open_file.title=Open File
+text_annotation_type=[{{type}} Annotation]
+toggle_slider_label=Toggle Slider
+thumbs_label=Thumbnails
+outline_label=Document Outline
+bookmark_label=Current View
+previous_label=Previous
+next_label=Next
+print_label=Print
+download_label=Download
+zoom_out_label=Zoom Out
+zoom_in_label=Zoom In
+zoom.title=Zoom