Translate Java .properties Files Online Free
Upload your Java or Spring .properties localization file, pick a target language, and download translated property values with all keys, comments, and escape sequences intact. Free, no signup.
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How to Translate .properties Files Online
Upload .properties File
Drag and drop your .properties file into the translator. Our parser immediately extracts translatable text while preserving code syntax.
Select Target Language
Choose from over 20+ languages including Spanish, German, French, Portuguese, Ukrainian, Japanese, and more.
Download Translation
Review the side-by-side diff preview and download your translated .properties file with zero structural corruption.
Why Translate .properties Files with structrans?
Preserves property keys exactly — only the string values are translated.
Keeps Java escape sequences (\n, \t, Unicode \uXXXX) and comment lines (#, !) intact.
Compatible with Spring Boot i18n, Java ResourceBundle, and Apache Struts message files.
In-memory processing — .properties files are never stored on disk.
Frequently Asked Questions
How do I translate a .properties file online for free?
Upload your .properties file, select a target language, and download the translated file with keys intact. Free, no account required.
Are Java property keys modified during translation?
Never. Property keys are immutable — only the string values on the right side of = are translated.
Does it work with Spring Boot message source files?
Yes! Spring Boot i18n message.properties and ResourceBundle files are fully supported.
Are Unicode escape sequences preserved?
Yes. \uXXXX Unicode escapes, \n newlines, and other Java escape sequences are protected from translation.
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