TRANSLATE JSON
Need to translate JSON files for your global app or website accurately? Our AI-powered localization platform preserves nested structures, handles complex plurals, and syncs directly with your Git workflow.
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Lokalise is loved by tech teams at 3000+ global companies
Strict structure preservation
Your keys and nested hierarchies remain exactly as you defined them. Export valid JSON every time, guaranteed.
Automated detection of ICU, i18next, and custom placeholder formats. No more broken variables in production.
Eliminate guesswork. Use our context sharing tools to improve translation quality: In-Context Editor, screenshots, key descriptions, and feed translation memory, style guide, glossaries for high-accuracy, context-aware AI translations.
Automate the entire JSON sync with your code repo so you never touch a .json file manually again.
Strict structure preservation
Your keys and nested hierarchies remain exactly as you defined them. Export valid JSON every time, guaranteed.
Automated detection of ICU, i18next, and custom placeholder formats. No more broken variables in production.
Eliminate guesswork. Use our context sharing tools to improve translation quality: In-Context Editor, screenshots, key descriptions, and feed translation memory, style guide, glossaries for high-accuracy, context-aware AI translations.
Automate the entire JSON sync with your code repo so you never touch a .json file manually again.
Luca Meschiari
CTO
Lokalise simplifies JSON translation by preserving context, structure, and nesting—eliminating the risk of broken builds and inaccurate translations. Unlike traditional tools, Lokalise integrates seamlessly with your existing tech stack, accelerating your release cycle.
Translate JSON files with confidence and efficiency.
Feature
Lokalise
Free Online Tools
Nested Object Support
Preserves hierarchy: Supports structured/nested keys without flattening your file.
Flattens data: Often converts nested objects into single-level strings, breaking your code.
Branching
Native integration: Work on features in parallel without overwriting translations.
Single branch only: wait for one release to finish before starting the next, or risk overwriting translations in progress.
AI translation
Context-engine: Uses your glossary, style guide, and TM for 90%+ accuracy.
Literal translation: Translates words, ignores code context/variables.
Quality assurance
Code-safe checks: Automates checks for missing brackets, variables, and tags.
Basic only: Only checks spelling, ignores code syntax.
Automate releases
CI/CD ready: Deploy translations automatically via CLI/API.
Blocking: Manual file handling delays every release.
Security & Permissions
Enterprise-grade: SSO, Audit logs, and granular access control.
None: No control over who sees or edits your source code strings.
Join 3,000+ companies that have stopped copy-pasting code.
What JSON formats does Lokalise support?
Lokalise supports 3 types of JSON formats: JSON nested, JSON flat, and Structured JSON.
How do you handle nested objects?
Lokalise treats nested JSON as a first-class citizen. We preserve the hierarchy during both import and export, ensuring your en.json structure matches your fr.json perfectly.
Can I export to a different format?
Seamlessly. You can upload JSON and export to .xml, .strings, .yaml, or even mobile formats like .arb without writing a single line of conversion code. Learn more about it here.
What happens if my JSON file has broken syntax?
Lokalise includes a built-in validator. If you try to upload a malformed JSON file, we’ll highlight the specific line and error so you can fix it before it hits the translation stage.
How does Lokalise ensure the best quality AI translations?
Our AI is context-aware. It references your translation memory, style guide, and glossary. We use smart routing between multiple LLMs, built-in scoring, human-in-the-loop controls, and Custom AI profiles that use advanced Retrieval Augmented Generation on your content to deliver human-level results you can rely on, not just hope for.
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