Translate $localize strings, then read every line back before you ship
Angular's extractor speaks XLIFF by default — KAERIS reads your ng extract-i18n XLIFF (or --format json), translates all 46 languages, then reads each string back to you in your own language and flags the ones worth a second look. {count, plural, ...}/{gender, select, ...} blocks stay intact for ng build --localize.
Extract
ng extract-i18n — KAERIS reads the XLIFF 1.2 it emits directly, or point it at --format json if you prefer.
Translate
Upload the file, or run kaeris translate src/locale/messages.json --langs de,fr,ja --icu.
Ship
Save each output as messages.de.json, wire it into angular.json's i18n.locales, and ng build --localize.
Before → after
<p i18n="@@welcome">Welcome back, {{ name }}!</p> <p i18n="@@cartCount"> {count, plural, =0 {Your cart is empty} one {# item} other {# items}} </p>
{ "welcome": "Willkommen zurück, {{ name }}!", "cartCount": "{count, plural, =0 {Dein Warenkorb ist leer} one {# Artikel} other {# Artikel}}" }
KAERIS translates a flat JSON id→string map, exactly what --format json extraction produces — ICU plural/select blocks are preserved verbatim and translated as one unit; turn on Smart plurals and the model fills in the CLDR categories the locale needs, same treatment as next-intl and Flutter's ARB. Angular wraps the real file in a { "locale", "translations" } envelope with hashed message ids unless you set @@ids — keep your own ids, translate the inner map, then drop it back into that envelope per locale.
ICU-aware
plural, select and selectordinal blocks are preserved verbatim and translated as one unit — never string-mangled.
Reads Angular XLIFF directly
Angular's default extractor output is XLIFF 1.2 — KAERIS reads ng extract-i18n XLIFF natively (or --format json if you prefer), inline <x/> tags preserved.
Custom @@id friendly
Set i18n="@@welcome" in your templates for readable keys instead of Angular's default content-hash ids.
One CLI command
kaeris translate src/locale/messages.json --langs de,fr,ja --icu — run it right after ng extract-i18n in CI.
Ship Angular in every market
46 languages, ICU-safe, JSON-native. Free to start, no account required.
$ pip install kaeris $ kaeris translate src/locale/messages.json --langs de,fr,ja --icu