
Translate .properties Files Without Encoding Headaches
Encoding handled. Escape sequences preserved. Comments intact. Unicode escapes correct. Your properties files translated without the ISO-8859-1 pain.
.properties Translation Is an Encoding Nightmare
Java .properties files have a 30-year legacy of encoding quirks. The default encoding is ISO-8859-1, non-Latin characters must use Unicode escape sequences (\uXXXX), and escape rules for backslashes, newlines, and special characters trip up every generic translation tool.
ISO-8859-1 vs UTF-8 encoding mismatch corrupts non-Latin characters — Japanese, Chinese, and Korean text becomes garbage
Backslash escape sequences (\n, \t, \\, \=) get double-escaped, stripped, or treated as literal text
Comment lines (# and !) and inline comments are stripped, losing developer context and section organization
Unicode escape sequences (\uXXXX) for non-Latin characters get corrupted, translated, or converted incorrectly
# Application messages
# Generated by Spring Boot i18n
app.title=My Application
app.description=A powerful tool for your team
# Navigation
nav.home=Home
nav.settings=Settings
nav.logout=Log Out
# User messages
user.greeting=Hello, {0}!
user.welcome=Welcome back, {0}. You have {1} new notifications.
# Special characters and unicode
currency.format=${0,number,#,##0.00}
path.separator=C:\\Users\\Documents
special.chars=Line one\nLine two\nLine three
unicode.example=\u00E9\u00E8\u00EA# Application messages
# Generated by Spring Boot i18n
app.title=Meine Anwendung
app.description=Ein leistungsstarkes Werkzeug f\u00FCr Ihr Team
# Navigation
nav.home=Startseite
nav.settings=Einstellungen
nav.logout=Abmelden
# User messages
user.greeting=Hallo, {0}!
user.welcome=Willkommen zur\u00FCck, {0}. Sie haben {1} neue Benachrichtigungen.
# Special characters and unicode
currency.format=${0,number,#,##0.00}
path.separator=C:\\Users\\Dokumente
special.chars=Zeile eins\nZeile zwei\nZeile drei
unicode.example=\u00E9\u00E8\u00EAWhat i18n Agent Preserves
Encoding Handling
Detects ISO-8859-1 vs UTF-8 encoding and outputs the correct format — with proper Unicode escapes when needed
Escape Preservation
Backslash escapes (\n, \t, \\, \=, \:) are recognized and preserved exactly as defined
Comment Retention
Comment lines, section headers, and inline documentation are kept in place to maintain file organization
Unicode Support
Non-Latin translations are correctly encoded as \uXXXX escape sequences for ISO-8859-1 files or as native UTF-8
Works With Your Java Stack
How It Works

No manual copy-paste. No string extraction. Just translated files.
Try i18n Agent Now
Drop your translation file here
JSON, YAML, PO, XML, CSV, Markdown, Properties
or click to browse
Target languages
Frequently Asked Questions
Enterprise team?
Still stuck on a TMS contract? Let's talk about migrating.