X-Ray: .ARB
Application Resource Bundle
"@@locale": "es",
"welcome": "Hola, {name}",
// Metadata for the translator
"@welcome": {
"description": "Greeting at Home",
"placeholders": { "name": { "type": "String" } }
}
Global Locale
Defines the base language of the file.
The Key
Unique identifier of the resource.
The Value
Translatable content (ICU).
The Context
Additional attributes (@).
Origin and Purpose
Created by Google in 2012 as a standard to simplify the flow between developers and professional translation agencies.
Why use it?
Unlike simple JSON, ARB supports the syntax of ICU Messages, allowing the same key to handle complex plurals and grammatical genders without cluttering the Dart code.
JSON Based
Easy to read for humans and machines.
ICU Support
Handles complex plurals, genders and formats.
Type Safe
Flutter generates typed Dart code automatically.
Tooling
Compatible with external translation tools.
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