Your app in every language.
One command.

90% of users choose their native language when it's available — and you're not offering it. One command changes that. AI translates, types auto-generate, builds stay green.

Start Free

Free forever. No credit card. · 2 minutes to your first translation

Published on npm MIT Licensed 5x cheaper than Lokalise 182 languages

~/my-app

$ i1n push --translate es,fr,de,ja

✓ Scanned locales/en_us/*.json

✓ Pushed 847 keys (2 namespaces)

⚡ Translating to 4 languages via AI...

✓ Translated 3,388 strings in 4.2s

✓ Generated i1n.d.ts (type definitions)

$▋

In production at

belo Crypto exchange · LATAM

3.5M+ users

4 active locales · es_AR · en_US · pt_BR · es_MX

✓ Every translation change — by humans, the CLI, or AI agents — is captured in the audit log for compliance review.See how audit log works

Works with your stack

With Bridge Mode, add type-safe localization to any existing codebase in minutes — no migration, no rewrites. Learn more →

76% of users prefer buying in their native language — yet most apps still only speak English. Traditional i18n means dozens of JSON files, zero type safety, and deploys that break at 2 AM.

One pipeline. Every language.

From your codebase to 182 languages in a single command. No context switching, no waiting.

Push

Your translation files are the source of truth. Push keys from your repo — flat or nested JSON, ARB, XML, YAML.

$ i1n push

Translate

AI translates with brand voice awareness and automatic variable protection. Sub-second per string.

$ i1n push --translate es,fr,ja

Pull

Pull translated files and auto-generated TypeScript definitions. Your IDE gets full autocomplete instantly.

$ i1n pull

What if your AI agent could do all three steps for you?

Agent Chat

Internationalize this settings page. Translate everything to Spanish, French, and Japanese.

Done. I internationalized the component — extracted 8 keys, translated to 3 languages, and regenerated type definitions. All via MCP, zero files touched manually.

⚡ i1n_extract_and_translate (MCP)

✓ Extracted 8 keys (settings namespace)

✓ Translated to es, fr, ja

✓ Regenerated i1n.d.ts

You can now use t('settings.title')

For AI Agents

The first localization tool agents actually use.

The only localization platform designed agent-first. One prompt: your agent extracts strings, pushes keys, translates to every language, and pulls type-safe definitions — a complete loop, without leaving your IDE.

Add to Cursor claude mcp add i1n -- npx i1n mcp

Native MCP server

Your AI agent executes i1n commands directly inside your IDE — push, pull, translate, extract strings. No terminal. No browser. No context switching.

Auto-generated agent rules

i1n setup-ai generates context rules for Cursor, Claude Code, Windsurf, GitHub Copilot, Codex, and Antigravity.

One prompt. Fully localized.

Say "internationalize this component". Your agent extracts every string, pushes keys, translates to all languages, generates types, and rewrites the code. 60 minutes of work in 30 seconds.

For Developers

Type-safe from day one.

Stop managing JSON files by hand. One command to push, translate with AI, and pull type-safe definitions. Your IDE gets full autocomplete. Your CI never breaks.

Auto-generated type definitions

i1n pull generates i1n.d.ts with full autocomplete.

Git-native workflow

Translation files live in your repo. Diff, review, and merge like any other code.

Bridge Mode

Already using i18next, React Intl, or Vue-i18n? i1n wraps your existing library — zero migration, instant type safety.

onboarding.tsx en_us.json i1n.d.ts

1 import { t } from 'i1n'

3 export function Onboarding() {

4 return (

5 <div>

6 <h1>{t('onboarding.welcome')}</h1>

7 <p>{t('onboarding.subtitle')}</p>

8 // ↑ Full autocomplete. Type errors if key doesn't exist.

9 </div>

10 )

11 }

For Product Teams

Everything under control. No deploys needed.

Product managers and copywriters edit translations directly from the dashboard. Review AI-generated copy, enforce brand voice, and manage languages — without blocking a single deployment.

Inline editing

Click any translation to edit it instantly. Changes sync to your codebase in real-time.

Role-based access

Owner, Admin, Editor, Viewer — granular permissions for every team member.

Brand Voice AI

Define your tone once. Every AI translation follows it consistently across all languages.

i1n

/ my-app / translations

onboarding.welcome Welcome to the app

5/5

settings.title Account Settings

3/5

errors.not_found Page not found

5/5

nav.dashboard Dashboard

5/5

847 keys · 5 languages

Infrastructure

Engineered for scale.

Not a toy. Production-grade localization infrastructure built on edge architecture.

200K+ parallel translations

Edge-powered queue with QStash. Burst-process entire projects without latency.

Multi-format native

One source of truth. Export to .json, .arb, .xml, .strings, .yml seamlessly.

Global translation cache

Community-powered cache means common strings translate instantly at zero cost.

Private-first on paid plans

Your translations stay private. Paid plans get isolated, dedicated caches.

Enterprise

Built for fintech-grade compliance.

Trusted by a 3.5M-user fintech in production. The controls compliance teams ask for — append-only audit trails, AI agent observability, and direct billing relationships — are built in, not bolted on.

Enterprise

Audit Log

Every change to every key — by humans, the CLI, or AI agents — recorded with full before/after diff, actor attribution, IP, and user agent. Append-only at the database level. One-click CSV export for SOC 2 and GDPR reviews.

Read docs →

Enterprise

Bring Your Own Key

Plug your own Google Gemini API key. Direct cost visibility through your existing Google billing, +50% bonus on credits and translation keys, and first access to preview models the day Google ships them.

Read docs →

Pricing

Start free. Scale as you grow.

Most localization tools charge $144+/mo. i1n starts free — and stays free until you outgrow it.

Pro Lifetime — Founding Members FOUNDING 200

All Pro features, forever. No recurring payments. Only 200 spots — closes for good after that.

starting at

$199 one-time

Become a Founding Member

No lock-in. Cancel anytime.

Starter

For evaluation & test projects

$0 /mo

200 keys
2 languages
1 project
2,000 AI translations/mo
0.2 credits per cache hit
Community support

Get Started

Pro

For solo devs shipping 1 product

$29 /mo

Up to 6,000 translations

2,000 keys
3 languages
2 projects
10,000 AI translations/mo
3 admin/editor seats
0.1 credits per cache hit
Brand Voice AI
Email support

Get Started

Business

For scaling startups across markets

$99 /mo

Up to 48,000 translations

8,000 keys
6 languages
4 projects
30,000 AI translations/mo
8 admin/editor seats
0.05 credits per cache hit
Brand Voice AI
Priority support

Get Started

BEST FOR COMPLIANCE

Enterprise

For regulated teams and platforms

Custom

from $399/mo

182 languages (all)
Custom keys
Custom projects
Custom AI translations/mo
Custom admin/editor seats
Dedicated private cache
Bring Your Own Key (Gemini) — +50% credits & keys bonus
Audit logs · DPA · SLA
Brand Voice AI + custom tuning
Dedicated account manager

Contact Sales

Stop overpaying for localization.

Lokalise

$144/mo

Phrase

$135/mo

Crowdin

$50/mo

i1n

Free forever · or $29/mo Pro

.json· .arb· .xml· .strings· .yml· .ts· i18next· React Intl· Vue-i18n· Flutter ARB· Apple .strings· Android XML· .json· .arb· .xml· .strings· .yml· .ts· i18next· React Intl· Vue-i18n· Flutter ARB· Apple .strings· Android XML

Your codebase speaks one language.
Your users don't.

Set up in under 2 minutes. Free tier included forever.

No credit card required.

Start Free

$ npm i -g i1n

Pro lifetime from $199 — only 200 founding spots, then it closes.

Your app in every language. One command.

One pipeline. Every language.

Push

Translate

Pull

The first localization tool agents actually use.

Type-safe from day one.

Everything under control. No deploys needed.

Engineered for scale.

200K+ parallel translations

Multi-format native

Global translation cache

Private-first on paid plans

Built for fintech-grade compliance.

Audit Log

Bring Your Own Key

Start free. Scale as you grow.

Starter

Pro

Business

Enterprise

Stop overpaying for localization.

Localize your stack

Translate to

Use Cases

Your codebase speaks one language. Your users don't.

Your app in every language.
One command.

Your codebase speaks one language.
Your users don't.