Entri supports ten localization file formats covering web, mobile, and desktop platforms. You configure the format per file pattern in your .nt3.yml file.
| Format identifier | Extension | Platform / use case |
|---|
json-flat | .json | Web — simple flat key-value |
json-nested | .json | Web — nested object structure |
yaml | .yaml | Web / Ruby on Rails |
po | .po | GNU gettext (Linux, web) |
xliff | .xlf | Industry standard XLIFF 1.2 |
xliff2 | .xlf | Industry standard XLIFF 2.0 |
arb | .arb | Flutter / Dart |
android-xml | .xml | Android |
ios-strings | .strings | iOS / macOS |
ios-stringsdict | .stringsdict | iOS / macOS (plurals) |
json-flat
json-nested
yaml
po
xliff
arb
android-xml
ios-strings
Flat key-value JSON. All keys live at the root level of the object.{
"welcome_message": "Welcome to Entri",
"button_save": "Save",
"button_cancel": "Cancel",
"error_not_found": "Page not found"
}
Nested JSON objects. Keys are grouped into sections using dot-notation paths.{
"common": {
"save": "Save",
"cancel": "Cancel"
},
"auth": {
"login": "Log in",
"logout": "Log out",
"welcome": "Welcome, {{name}}"
},
"errors": {
"not_found": "Page not found",
"server_error": "Something went wrong"
}
}
YAML key-value format. Common in Ruby on Rails applications.en:
common:
save: Save
cancel: Cancel
auth:
login: Log in
logout: Log out
welcome: "Welcome, %{name}"
errors:
not_found: Page not found
GNU gettext PO format. Widely used in open-source and Linux applications.# Entri — French translations
msgid ""
msgstr ""
"Content-Type: text/plain; charset=UTF-8\n"
"Language: fr\n"
msgid "welcome_message"
msgstr "Bienvenue sur Entri"
msgid "button_save"
msgstr "Enregistrer"
msgid "button_cancel"
msgstr "Annuler"
XLIFF 1.2 — the industry-standard XML-based interchange format, compatible with most professional CAT tools.<?xml version="1.0" encoding="UTF-8"?>
<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2">
<file source-language="en" target-language="fr" datatype="plaintext">
<body>
<trans-unit id="welcome_message">
<source>Welcome to Entri</source>
<target>Bienvenue sur Entri</target>
</trans-unit>
<trans-unit id="button_save">
<source>Save</source>
<target>Enregistrer</target>
</trans-unit>
</body>
</file>
</xliff>
Application Resource Bundle — the Flutter/Dart localization format.{
"@@locale": "en",
"welcomeMessage": "Welcome to Entri",
"@welcomeMessage": {
"description": "Shown on the home screen"
},
"buttonSave": "Save",
"@buttonSave": {},
"itemCount": "{count, plural, one{{count} item} other{{count} items}}",
"@itemCount": {
"placeholders": {
"count": { "type": "int" }
}
}
}
Android string resources XML format.<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="welcome_message">Welcome to Entri</string>
<string name="button_save">Save</string>
<string name="button_cancel">Cancel</string>
<plurals name="item_count">
<item quantity="one">%d item</item>
<item quantity="other">%d items</item>
</plurals>
</resources>
iOS/macOS Localizable.strings format — simple key = “value” pairs./* Home screen greeting */
"welcome_message" = "Welcome to Entri";
/* Button labels */
"button_save" = "Save";
"button_cancel" = "Cancel";
/* Error messages */
"error_not_found" = "Page not found";
format key:
project_id: "proj_abc123"
source_language: en
file_patterns:
- path: "src/locales/{lang}.json"
format: json-nested
{lang} placeholder is replaced with the language code (e.g., en, fr, de) when reading and writing files.
Multiple patterns
You can mix formats within the same project by listing multiple patterns:
project_id: "proj_abc123"
source_language: en
file_patterns:
- path: "src/locales/{lang}/app.json"
format: json-nested
- path: "src/locales/{lang}/marketing.po"
format: po
Each pattern maps to a separate namespace in Entri, allowing you to manage files by feature or team independently.
| You are building… | Recommended format |
|---|
| React / Vue / Angular app | json-nested or json-flat |
| Ruby on Rails app | yaml |
| Android app | android-xml |
| iOS / macOS app | ios-strings (+ ios-stringsdict for plurals) |
| Flutter app | arb |
| Working with a translation agency | xliff or xliff2 |
| GNU/Linux or gettext project | po |
