TranslatePlus
Localization API

Localization API for Multilingual Applications

Automate application localization using the TranslatePlus Localization API. Translate i18n files, JSON resources, and application content into 130+ languages to build multilingual products faster.

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Automate Localization for Global Applications

Modern applications need to support users across multiple languages. Translating UI and localization files manually slows down releases and makes it harder to keep content in sync.

  • localize applications faster
  • automate translation pipelines
  • manage multilingual content
  • scale global products

What you can localize

Translate i18n files and application content directly into your target languages.

i18n/JSON resources
Translate resource files used by apps.
130+ target languages
Support multilingual user bases.
Pipeline-friendly workflow
Automate multilingual updates in CI.
Ready-to-use translations
Get localized resources back for deployment.
How it works

Localization with a Simple i18n Request

Upload your i18n file, set the target language, and receive a localization job you can process automatically.

  • Upload your i18n/JSON resource file.
  • Set target languages for localization.
  • Run automated localization pipelines in your app.
Request
curl -X POST https://api.translateplus.io/v2/i18n \
  -H "X-API-KEY: YOUR_API_KEY" \
  -F "file=@messages.json" \
  -F "target=fr"
Example Response
{
  "job_id": "job_12345",
  "status": "processing"
}

Key Features of the Localization API

Designed to help teams automate i18n updates and ship multilingual products faster.

Translate i18n Files

Automatically translate JSON resource files used by applications.

Automate Workflows

Integrate translation directly into development pipelines.

Scale Localization

Translate entire applications into multiple languages.

130+ Supported Languages

Deliver multilingual applications to users worldwide.

Use Cases for Localization API

Real-world localization workflows built for modern product teams.

SaaS Applications

Translate UI text, notifications, and user interface components for international users.

Mobile Applications

Localize mobile apps for Android and iOS platforms using automated i18n updates.

Web Applications

Translate interface content and UI components for global audiences and new releases.

Software Platforms

Automate localization workflows across product updates and new features.

Localization Pipelines

Integrate translation into content pipelines for rapid multilingual deployments.

Multi-tenant Products

Localize multiple tenants and environments with consistent resource management.

Localization vs Translation APIs

Choose localization for i18n resources and translation for individual content.

FeatureText Translation APILocalization API
Translate individual text
Translate localization files
Automate i18n workflows
App localization support

Build Multilingual Applications Faster

Using the TranslatePlus Localization API, development teams can automate translation workflows and deploy multilingual applications faster with fewer manual steps.

130+
supported languages
i18n files
JSON resources
Automated
localization pipelines
Scalable
multi-language updates

Explore Other Translation APIs

TranslatePlus offers APIs designed for specific translation needs.

Text Translation API

Translate plain text inputs instantly.

Batch Translation API

Translate multiple texts and datasets in one request.

HTML Translation API

Preserve markup while translating HTML pages.

Email Translation API

Translate email subject lines and HTML bodies.

Subtitle Translation API

Translate SRT subtitle files while preserving timing.

Language Detection API

Detect the language of any text before translation.

Frequently Asked Questions

Start Building Multilingual Applications

Use the TranslatePlus Localization API to automate translation workflows and launch multilingual applications faster.

Get API KeyView Documentation