⚡️ JSON Translate

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Precise JSON translation — values only, structure intact, i18n made simple

JSON Translate translates JSON safely and fast—it only touches string values and never breaks your schema. It works with popular translation APIs (Google/Azure/DeepL) and modern LLMs (DeepSeek, OpenAI, Gemini, Azure OpenAI, Siliconflow, Groq, OpenRouter, Perplexity, or Custom LLM). Use it to localize apps, sites, and datasets with global, JSONPath-targeted, key-based, or i18n aggregation modes.

👉 Try it online: https://tools.newzone.top/en/json-translate

Key Features

• Preserve JSON Schema: Translate only string values; keep structure and order intact.
• High-Performance Caching (IndexedDB): Stores translation results with unlimited capacity—no browser storage limits.
• Multiple Translation Providers: Google, Azure, DeepL(X), plus 9 LLM models.
• Flexible Scopes: Global, JSONPath-targeted, specific keys, selective start node, and i18n mode.
• Mapped Translation: Write results to different output keys without overwriting originals.
• Multi-language Output: Translate into multiple target languages in one pass.
• Dark Mode & Multi-locale UI: Full internationalization support.

Translation Modes

Global Translation

Recursively translates all string values in the entire JSON while preserving hierarchy.

Targeted Nodes (JSONPath)

Use JSONPath expressions to precisely locate and translate specific nodes. Multiple paths can be comma-separated.

Specific Keys

Translate only specified key names:

• Simple Mode: Comma-separated key names.
• Advanced Mode: Define input-output key mappings; translations written to new keys.

Selective Translation

Specify a starting node and target field names for flat JSON structures.

i18n Mode

Aggregates translations under the same structure—perfect for multilingual apps. Adds new language fields alongside the source field.

{
  "title": {
    "en": "Settings",
    "zh": "设置",
    "fr": "Paramètres"
  }
}

Translation APIs

Traditional APIs

API	Quality	Stability	Free Tier
DeepL (X)	★★★★★	★★★★☆	500K chars/month
Google Translate	★★★★☆	★★★★★	500K chars/month
Azure Translate	★★★★☆	★★★★★	2M chars/month (first 12 months)
GTX API (Free)	★★★☆☆	★★★☆☆	Free (rate-limited)
GTX Web (Free)	★★★☆☆	★★☆☆☆	Free

LLM Models

Supports DeepSeek, OpenAI, Gemini, Azure OpenAI, Siliconflow, Groq, OpenRouter, Perplexity, and Custom LLM.

Performance Tuning

Two key parameters for optimizing translation speed:

• Concurrent Lines: Maximum lines translated simultaneously (default: 20). Too high may trigger rate limits.
• Context Lines: Lines included per batch for context-aware translation (default: 50).

Documentation & Deployment

For detailed configuration, API setup, and self-hosting instructions, see the Official Documentation.

Quick Deployment: Deploy Guide

Contributing

Contributions are welcome! Feel free to open issues and pull requests.

1. Fork the repo and create a feature branch
2. Run yarn and yarn dev locally
3. Add tests/docs when applicable
4. Submit a PR with a clear description

License

MIT © 2025 rockbenben. See LICENSE.