Launch inevery language.

Wrap your JSX in <T>, run one command, and ship every string in 100+ languages.

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1,280 glyphs · 8 writing systems · one pipeline

zhHan语言arArabicلغةhiDevanagariभाषाruCyrillicязыкkoHangul언어elGreekγλώσσαthThaiภาษาenLatinlanguage

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One toolchain, every stack.

Developer-first SDKs to translate everything from simple sites to complex user experiences.

app/page.tsx
1import { T, Num, DateTime } from 'gt-next';
2
3export default function Home() {
4 return (
5 <T>
6 <main>
7 <h1>Hello, world!</h1>
8 <p>
9 <DateTime>{new Date()}</DateTime>
10 </p>
11 <p>
12 GT has everything you need to ship your
13 product in <Num>{118}</Num> languages.
14 </p>
15 </main>
16 </T>
17 );
18}
gt-next

Server components, middleware locale routing, and static translations built at build time.

npm i gt-nextnpx gt@latest
UI<T>…</T>
Textes'¡Hola, mundo!'
Numbersde1.234.567,89
Currenciesde1.280,00 €
Datesfr29 juil. 2026
Pluralspl1 plik · 4 pliki
FunctionsuseGT() · getGT()
Contextcontext="file"
Routingfr/fr/a-propos
gt-next reference

Your layout has to survive translation.

Get started is 11 characters in English, 13 in German and 3 in Japanese. Every one of them has to fit inside the same button.

Every locale is a different length

One button in four languages, measured by the browser rather than estimated. German runs long, Japanese runs short, and Arabic re-anchors the whole line.

Ranked against English

A layout that only fits the source string breaks somewhere near the top of this list.

Enforced at the call site

The entry that has to fit is steered from the component that renders it — context for the translator, a hard cap for the layout.

  • $maxChars caps the translation where the layout needs it
  • $context tells the model what the string is for
  • $id and $requiresReview steer one entry without touching the rest
  • Widths measured at render with measureText, not typed

One prop, not a policy document

Jetzt starten is two characters over an 11-character button. The cap catches it at translation time, not in production.

components/Cta.tsx
1import { T } from 'gt-next';
2
3export function Cta() {
4 return (
5 <T $context="homepage CTA button" $maxChars={20}>
6 Get started
7 </T>
8 );
9}

100+ languages, and the variants that matter.

zh-Hant is not zh-Hans. Both ship — 78 base languages expand into 129 distinct locale tags, canonicalized by the platform.

Every writing system

Latin, Cyrillic, Greek, Arabic, Devanagari, Han, Hangul, Thai — joined, stacked and bidi-resolved by the browser, with per-script fallbacks in the SDK.

One language is many locales

Every tag below is production-ready, verbatim from the platform’s supported-locales list. The regional variants are where naive tools flatten.

Context

One word, two meanings. A context tag decides which translation ships.

Terminology

One term, six locales, decided once. Per-locale style rules keep the wording identical everywhere it appears.

Routing

Automatic detection and locale-based routing, on SEO-friendly paths you never configure.

A meridian cage with three points of presence and one serving 12 ms awayfra · 12 msiad · 21 msnrt · 34 mssin · 41 mssyd · 48 msuser

5 points of presence shown · anycast · versioned per locale

Delivery

A global, low-latency translation CDN. Push over-the-air updates without redeploying your app.

  • Fix a translation and ship it without touching your build
  • Served from the edge, close to whoever asked for it
  • Versioned per locale, so a rollback is one step

Grammar the string table can’t see.

English has two plural forms, Polish four, Japanese one — and Arabic reads the other way. Neither fact fits in a key-value file.

Counting is not concatenation

English has two plural forms, Polish four, Japanese one. GT ships ICU plurals, so the number picks the form instead of the string.

Both directions, one markup

Set dir and the browser mirrors rows, alignment and controls. Nothing about the panel is written twice.

Every variant translated, not interpolated

Each branch child is translated independently, so every form reads naturally instead of being assembled from a stem plus a suffix.

components/Inbox.tsx
1import { T, Plural, Num } from 'gt-react';
2
3export function Inbox({ count }: { count: number }) {
4 return (
5 <T>
6 <Plural
7 n={count}
8 one={<>You have <Num>{count}</Num> message.</>}
9 other={<>You have <Num>{count}</Num> messages.</>}
10 />
11 </T>
12 );
13}

The source writes two forms. Targets get what they need.

English only has one and other, so that is all you write. Polish supplies few and many itself; Arabic adds zero and two.

  • <Plural> selects by CLDR rules, not n === 1
  • <Branch> does the same for any condition
  • <Num>formats the count to the reader’s locale inside the sentence

How a string becomes a shipped translation.

Nine beats, from the JSX you already wrote to the pull request that ships it in six languages. Scroll to follow it.

example.comen
ProductDocsPricing

Ship your product everywhere

One codebase, every language your customers read in.

Get started
Docs in five languagesGuides your team already reads.
Support around the clockAnswers in your language.
© 2026 example.comTermsPrivacyStatus

128 strings · 6 locales · context attached

extracttranslatereviewscaneditopen pr
  1. GT reads the page you already wrote.

    Every text node is picked up where it stands — nav label, heading, body copy, button, legal line — with the markup around it as its context.

  2. It translates in place.

    The strings come back in Spanish and every container re-measures itself. Nothing is re-laid out by hand; the layout absorbs the new lengths.

  3. Around any component.

    The button is JSX wrapped in <T>. GT extracts the label, ships the locale build, and the button widens to hold whatever came back.

  4. In the voice you asked for.

    A context attribute goes straight to the translation agent. Same source string, different register — and the heading lands in the tone you wrote for.

  5. With your review, where it matters.

    A node marked requires review fires a webhook instead of shipping. Legal reads the Spanish, approves it, and only then does it go live.

  6. Then the code moves.

    A commit triggers the workflow and Locadex reads the file that changed — not a diff of strings, the source that produced them.

  7. Locadex maps what changed.

    Three findings land on the exact lines that need work: copy that was never wrapped, a date formatted by hand, a label with no locale build.

  8. It edits, then translates in context.

    The agent wraps the tree in <T>, swaps the hand-rolled date for <DateTime>, and writes the translations against the file it just read.

  9. And opens the pull request.

    One PR, six locales, a diff you can read. Review it like any other change — merge, and the site is live in every language.

Edit in context.

Agents write translations. You review, edit, and approve in a focused workspace.

  • Side-by-side source and translation view
  • See diffs when translations are regenerated
  • Edit translations before or after they go live
workspace · es-4194 strings
source — en
translation — es
Hello, world!
¡Hola, mundo!approved
Launch in every language
Lanza en todos los idiomasapproved
End-to-end localization for the world's best companies
Localización de extremo a extremo para las mejores empresas del mundo.Localización integral para las mejores empresas del mundo.edit
By continuing you agree to our Terms of Service.
Al continuar, aceptas nuestros Términos de Servicio.approved
⌘K searchhistorydownloadagent · locadex

Everything you need, in one toolchain.

Buildtime, runtime, and review — one project, one config, one bill.

One string, source to screen

Hover a stage — the same string climbs all seven.

The GT stack, end to end: app code, gt cli, Locadex, context, review, edge CDN and runtime delivery — each plane taps the same doubled rail, from source code to the translated string on a user’s screen
gt cliacme/web
$ npx gt translate
gt-next detected · Next.js App Router
128 strings · 3 new · 2 changed
es fr ja de zh
done in 8.4s · local edits preserved

Code

Mark up JSX once — every locale ships from your build.

page.tsxNext.jsReact
import { T } from 'gt-next'
<T>
<h1>Hello, world!</h1>
</T>
es¡Hola, mundo!
jaこんにちは世界!

Content

User-generated content, translated on demand at runtime.

notify.tsruntimeNode.js
await tx('Payment received', {
$locale: 'ja',
})
200 · 84 ms · cached at the edge
{ "ja": "支払いを受領しました" }

Dashboard

Glossaries, directives, and review in one workspace.

acme/webproduction
enesfrjadezh
glossary24 terms
directives6 rules
reviewqueue empty
v214 · published2 min ago

Locadex

The agent that internationalizes your repo in guarded PRs.

PR #218locadex → mainGitHub
@@ −4,1 +4,1 @@ app/checkout.tsx
<p>Payment received</p>
+<p><T>Payment received</T></p>
merged+38 −6 · checks passed

Context, defined once — inherited all the way down

Glossary and tone set at the top; every project and component below inherits them.

Organization
Glossary

“Locadex is the GT agent — do not translate.”

Directives

“Active voice. Use formal ‘Sie.’” de

Project
1brand-coreorg
2docs-styleorg
3checkout-copyproject

On overlap the top group wins: formal ‘Sie’ holds, casual tone loses.

Component
<T $context="popup, not bread">
Click the toast to dismiss
</T>
esla notificaciónla tostada

One commit, on the clock

09:41:02committedapp/page.tsx
09:41:18extractedhash 0f3a92
09:41:44pr openedlocadex · #218
09:42:03translated6 locales · 3.4 s
09:44:37approvedreview · @mira
09:45:01publishededge · 3 regions
09:45:09renderedde · 38 ms

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Full-stack localization across buildtime, runtime, and review.

Starter

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  • Every SDK and the translation CLI
  • Dashboard, glossaries, and the editor
  • Locadex agent runs on your repo
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