Shipi18n

Catch broken translations before you ship them. Shipi18n is an open-source check for locale files: it fails CI when a translation — from a human, a TMS or an AI agent — drops or breaks a placeholder, plural or key, and shows the exact fix.

• Detects: dropped or renamed placeholders ({name}, {{count}}, %{name}, %s, %1$s, %@), plurals whose separator was lost or that miss a form the language needs (Polish few/many, Arabic two — in ICU, i18next keys, Rails, Android and .xcstrings), invalid ICU MessageFormat, missing and orphaned keys, a key written twice in one JSON object, empty and untranslated strings.
• Formats: JSON (i18next, vue-i18n, next-intl, flat or nested), YAML including Rails, Flutter ARB, Apple .xcstrings, Android strings.xml, gettext .po, XLIFF.
• Uploads anything? No. The check runs offline, on your machine or CI runner.
• Needs a key or account? No. Only the optional --semantic review and translate use your own LLM key.

npx @shipi18n/cli check ./locales -s en

Exit 0 clean, 1 findings (each with a one-line fix), 2 usage error. Output as text, JSON, SARIF (GitHub PR annotations) or JUnit.

A real run, not a mockup — docs/check-demo.tape reproduces it.

Choose your task

What it doesn't do

• It is not a hosted service or a TMS: no account, dashboard or pricing. (An earlier hosted translation API was retired.)
• It is not a library you import from Python or Ruby; it is a CLI you run from any CI.
• Without --semantic it checks structure, not whether a translation reads well.

Found in the wild. The same command on a real project — Hoppscotch's Afrikaans locale as it was when we ran it (structural rules only; the missing-key noise switched off so the placeholder findings stand out):

$ npx @shipi18n/cli check packages/hoppscotch-common/loc

... [View full README on GitHub](https://github.com/shipi18n/shipi18n#readme)