Loper · Subtitles, captions & localization

Open .strings files on your Mac.

.strings

Translations for iOS and macOS apps: one key = value pair per line, comments for translators.

Loper is a free, minimal editor for macOS that opens Apple .strings instantly and colors every part of the file, so you find the value you need at a glance and can fix it right there. No IDE, no project to load, no gray wall of text.

Localizable.strings opened in Loper: Apple .strings with color-coded INI / Properties
Show the file as text
/* Title of the export button */"export.button" = "Exportieren"; /* Shown while files are copied */"copy.progress" = "Kopiere %d von %d Dateien"; "settings.title" = "Einstellungen";"error.disk_full" = "Das Ziel ist voll.";

How to open .strings files

  1. Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
  2. Double-click your .strings file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
  3. Want every .strings file to open in Loper? Choose Loper › Make Loper the Default Editor….