diff --git a/l10n/sv/chrome.properties b/l10n/sv/chrome.properties
new file mode 100644
index 000000000..3c0e4b805
--- /dev/null
+++ b/l10n/sv/chrome.properties
@@ -0,0 +1,3 @@
+# Chrome notification bar messages and buttons
+unsupported_feature=Denna PDF kanske inte visas korrekt.
+open_with_different_viewer=Öppna med annan pdf-visare.
diff --git a/l10n/sv/viewer.properties b/l10n/sv/viewer.properties
index 3aadfd44f..81d4a3958 100644
--- a/l10n/sv/viewer.properties
+++ b/l10n/sv/viewer.properties
@@ -1,45 +1,89 @@
-bookmark.title=Aktuell vy (visa eller öppna i nytt fönster)
+# Main toolbar buttons (tooltips and alt text for images)
 previous.title=Föregående sida
+previous_label=Föregående
 next.title=Nästa sida
-print.title=Skriv ut
-download.title=Ladda ner
+next_label=Nästa
+
+# LOCALIZATION NOTE (page_label, page_of):
+# These strings are concatenated to form the "Page: X of Y" string.
+# Do not translate "{{pageCount}}", it will be substituted with a number
+# representing the total number of pages.
+page_label=Sida:
+page_of=av {{pageCount}}
+
 zoom_out.title=Zooma ut
+zoom_out_label=Zooma ut
 zoom_in.title=Zooma in
+zoom_in_label=Zooma in
+zoom.title=Zooma
+print.title=Skriv ut
+print_label=Skriv ut
+open_file.title=Öppna fil
+open_file_label=Öppna
+download.title=Ladda ner
+download_label=Ladda ner
+bookmark.title=Aktuell vy (kopiera eller öppna i nytt fönster)
+bookmark_label=Aktuell vy
+
+# Tooltips and alt text for side panel toolbar buttons
+# (the _label strings are alt text for the buttons, the .title strings are
+# tooltips)
+toggle_slider.title=Visa/Dölj panel
+toggle_slider_label=Visa/Dölj panel
+outline.title=Visa dokumentdisposition
+outline_label=Dokumentdisposition
+thumbs.title=Visa miniatyrer
+thumbs_label=Miniatyrer
+search_panel.title=Sök i dokumentet
+search_panel_label=Sök
+
+# Document outline messages
+no_outline=Ingen dokumentdisposition tillgänglig
+
+# Thumbnails panel item (tooltip and alt text for images)
+# LOCALIZATION NOTE (thumb_page_title): "{{page}}" will be replaced by the page
+# number.
+thumb_page_title=Sida {{page}}
+# LOCALIZATION NOTE (thumb_page_canvas): "{{page}}" will be replaced by the page
+# number.
+thumb_page_canvas=Miniatyr av sida {{page}}
+
+# Search panel button title and messages
+search=Hitta
+search_terms_not_found=(hittades inte)
+
+# Error panel labels
 error_more_info=Mer information
 error_less_info=Mindre information
 error_close=Stäng
-error_build=PDF.JS bygge: {{build}}
+# LOCALIZATION NOTE (error_build): "{{build}}" will be replaced by the PDF.JS
+# build ID.
+error_build=PDF.JS Bygge: {{build}}
+# LOCALIZATION NOTE (error_message): "{{message}}" will be replaced by an
+# english string describing the error.
 error_message=Meddelande: {{message}}
+# LOCALIZATION NOTE (error_stack): "{{stack}}" will be replaced with a stack
+# trace.
 error_stack=Stack: {{stack}}
+# LOCALIZATION NOTE (error_file): "{{file}}" will be replaced with a filename
 error_file=Fil: {{file}}
+# LOCALIZATION NOTE (error_line): "{{line}}" will be replaced with a line number
 error_line=Rad: {{line}}
+rendering_error=Ett fel inträffade när sidan renderades.
+
+# Predefined zoom values
 page_scale_width=Sidbredd
 page_scale_fit=Passa sida
-page_scale_auto=Automatisk zoom
+page_scale_auto=Automatisk Zoom
 page_scale_actual=Faktisk storlek
-toggle_slider.title=Visa/Dölj panel
-thumbs.title=Visa miniatyrer
-outline.title=Visa dokumentdisposition
-loading=Laddar... {{percent}}%
+
+# Loading indicator messages
 loading_error_indicator=Fel
-loading_error=Ett fel inträffade när PDF dokumentet laddades.
-rendering_error=Ett fel inträffade när PDF dokumentet renderades.
-page_label=Sida:
-page_of=av {{pageCount}}
-no_outline=Ingen dokumentdisposition tillgänglig
-open_file.title=Öppna fil
+loading_error=Ett fel inträffade när PDFen skulle laddas.
+
+# LOCALIZATION NOTE (text_annotation_type): This is used as a tooltip.
+# "{{type}}" will be replaced with an annotation type from a list defined in
+# the PDF spec (32000-1:2008 Table 169 – Annotation types).
+# Some common types are e.g.: "Check", "Text", "Comment", "Note"
 text_annotation_type=[{{type}} Annotering]
-toggle_slider_label=Visa/Dölj panel
-thumbs_label=Miniatyrer
-outline_label=Disposition
-bookmark_label=Aktuell vy
-previous_label=Föregående
-next_label=Nästa
-print_label=Skriv ut
-download_label=Ladda ner
-zoom_out_label=Zooma ut
-zoom_in_label=Zooma in
-zoom.title=Zooma
-thumb_page_title=Sida {{page}}
-thumb_page_canvas=Miniatyr av sida {{page}}
-request_password=PDF dokumentet är skyddat av ett lösenord:
\ No newline at end of file
+request_password=PDFen är skyddad av lösenord: