on-device translations / chrome translator api demo
built with astro · bun · vite

Translate locally.
No network. No leaks.

A live demo of Chrome’s built-in Translator API. Every keystroke is translated by a model that lives on your machine — no servers in the loop, no telemetry, no API keys. Pick a pair, type, watch the words stream in.

39languages
∞pairs (via en hub)
0network calls

Your browser can’t run this demo on-device.

The Chrome Translator API ships only in desktop Chrome 138+ (and Edge Canary/Dev experimentally), on capable hardware. Here’s what is needed to unlock it.

0 chars ↵ for newline · streams above 40 chars
— —
en → es checking…

How the model size shows up

first-use download · per pair
Per language pack
~hundreds of MB
First call
downloads, streams progress
Subsequent calls
instant, sequential
Cleanup threshold
purges if disk < 10 GB

The Translator API doesn’t expose a byte-exact size before download — the bar above fills as downloadprogress events arrive from the monitor callback during Translator.create().

All 39 supported languages

on-device · BCP-47 codes
ar
—
Arabic
العربية
bg
—
Bulgarian
Български
bn
—
Bengali
বাংলা
cs
—
Czech
Čeština
da
—
Danish
Dansk
de
—
German
Deutsch
el
—
Greek
Ελληνικά
en
—
English
English
es
—
Spanish
Español
fi
—
Finnish
Suomi
fr
—
French
Français
hi
—
Hindi
हिन्दी
hr
—
Croatian
Hrvatski
hu
—
Hungarian
Magyar
id
—
Indonesian
Bahasa Indonesia
it
—
Italian
Italiano
iw
—
Hebrew
עברית
ja
—
Japanese
日本語
kn
—
Kannada
ಕನ್ನಡ
ko
—
Korean
한국어
lt
—
Lithuanian
Lietuvių
mr
—
Marathi
मराठी
nl
—
Dutch
Nederlands
no
—
Norwegian
Norsk
pl
—
Polish
Polski
pt
—
Portuguese
Português
ro
—
Romanian
Română
ru
—
Russian
Русский
sk
—
Slovak
Slovenčina
sl
—
Slovenian
Slovenščina
sv
—
Swedish
Svenska
ta
—
Tamil
தமிழ்
te
—
Telugu
తెలుగు
th
—
Thai
ไทย
tr
—
Turkish
Türkçe
uk
—
Ukrainian
Українська
vi
—
Vietnamese
Tiếng Việt
zh
—
Chinese (Simplified)
中文
zh-Hant
—
Chinese (Traditional)
繁體中文

Hardware requirements

desktop only
Chrome
138 +
OS
Win 10/11 · macOS 13+ · Linux
RAM
16 GB
CPU cores
4 +
GPU VRAM
> 4 GB
Free disk
22 GB
Mobile
— not available —
Firefox / Safari
— no JS surface —