LocalePack
AI-powered locale file translator for browser extensions, Next.js, i18next, and vue-i18n. Translates into 52 languages with placeholders and nested structure preserved. Pay once, no subscription.
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What is LocalePack?
LocalePack is an AI-powered localization tool specifically designed for browser extensions and i18next web applications. It translates Chrome extension messages.json files, Safari extension messages.json files, Firefox add-on messages.json files, i18next JSON namespace files, and Chrome Web Store listing text into 52 languages. Users upload their source JSON files (or enter listing text), select target languages, pay once via Stripe, and download a ready-to-ship ZIP file containing properly formatted _locales/{lang}/messages.json files or locale namespace files.
The tool is purpose-built for developers who need to localize browser extensions or i18next-based web applications. Key features include placeholder-safe translations that preserve $PLACEHOLDER$ syntax for Chrome/Safari extensions and {{placeholder}} syntax for i18next, automatic detection of i18next plural keys (_one/_other), description field context usage for more accurate AI translations, parallel processing of all languages simultaneously (most jobs complete in under 5 minutes), and ZIP export with correct folder structure ready to drop into your project.
LocalePack is ideal for indie developers, extension maintainers, open-source contributors, full-stack developers working with React/i18next apps, SaaS companies, and Chrome Web Store publishers. It supports Chrome, Firefox, Edge, Opera, and Safari Web Extensions, as well as React Native apps using i18next. The tool eliminates the need for generic translation management systems (TMS) or manual translation work.
The pricing model is one-time payment per job with no subscriptions or monthly fees. Final pricing is transparent and calculated after file upload based on string length/file size and number of languages selected. The website features a live pricing estimator so users can see exactly what they'll pay before uploading anything.
LocalePack pricing
Pricing model: Freemium
One-time payment per job via Stripe with no subscriptions or monthly fees. Final pricing is transparent and computed after file upload on the checkout page based on string length (for messages.json) or file size and complexity (for i18next) and number of languages selected. The website provides a live pricing estimator so users see exactly what they'll pay before uploading. Users pay once per job and can download the ZIP file forever. No free tier is available.
LocalePack pros
- Supports 52 languages for translation
- Placeholder-safe output preserves $PLACEHOLDER$ and {{variable}} syntax
- One-time payment with no subscriptions or monthly fees
- Ready-to-ship ZIP with correct _locales folder structure
- Parallel processing completes most jobs in under 5 minutes
- Transparent pricing with live estimator before upload
- Chrome extension messages.json format compliance
- Safari Web Extension format support
- Firefox add-on format support
- i18next namespace JSON support with plural key handling
- Description fields used as context hints for accurate translations
- Max 500KB file upload limit
- Chrome Web Store listing translation with character limit enforcement
- Automation script included for CWS bulk-upload
- Works for Chrome, Firefox, Edge, Opera, and Safari extensions
- React Native i18next locale file support
- No manual placeholder fixing needed after translation
- Download files forever after one-time payment
LocalePack cons
- No free tier - payment required for all translations
- 500KB maximum file size limit
- Final price only calculated after file upload at checkout
- No subscription plans for bulk/ongoing localization needs
- Translations run only after payment (no free preview)
- Limited to JSON format files only
- No human translation review option
- No translation memory or glossary features
- No collaborative team workspace
- i18next only supports namespace JSON format, not other i18n libraries
Frequently asked questions about LocalePack
What file formats does LocalePack support?
LocalePack supports Chrome extension messages.json, Safari extension messages.json, Firefox add-on messages.json, i18next namespace JSON files (locales/**/*.json), React Native i18next locale files, and Chrome Web Store listing text entry. All files must be in JSON format with max 500KB size.
How many languages are supported?
LocalePack supports translation into 52 locales/languages. Users can select any combination of these 52 languages when submitting their translation job.
How long does translation take?
All languages are translated simultaneously through parallel processing. Most jobs complete in under 5 minutes after payment.
Will my placeholders be preserved?
Yes, LocalePack provides 100% placeholder-safe output. For Chrome/Safari extensions, $PLACEHOLDER$ syntax is preserved exactly. For i18next, {{variable}} interpolation tokens and _one/_other plural keys are preserved intact.
What is included in the downloaded ZIP?
For browser extensions: a ZIP with correct _locales/{lang}/messages.json folder structure for all selected languages. For i18next: a locales/ tree mirroring your namespace structure with translated values for each language, ready for i18next.init() or react-i18next.
Is there a free tier or trial?
No, LocalePack does not offer a free tier. Payment is required via Stripe before translation begins. However, the live pricing estimator lets you see the cost before uploading any files.
How does pricing work?
Pricing is one-time per job with no subscriptions. Final price is calculated after file upload based on string length (messages.json) or file size and complexity (i18next) and the number of languages selected. Transparent pricing is shown via the live estimator before checkout.
Can I use LocalePack for Chrome Web Store listings?
Yes, LocalePack offers a dedicated Chrome Web Store listing translation feature. Enter your extension name (75 chars max), short description (132 chars max), and store description (16,000 chars max). Get translations for all 52 locales with character limit enforcement and an automation script for bulk CWS Dashboard upload.
Does LocalePack support i18next plurals?
Yes, LocalePack automatically detects i18next-style plural splits such as key_one and key_other, ensuring grammatical correctness per language. Double-brace {{placeholder}} interpolation tokens are also preserved.
What browsers/extensions are compatible with LocalePack output?
LocalePack output is compatible with Chrome, Firefox, Edge, Opera, and Safari Web Extensions. All use the same WebExtension messages.json format with _locales/{locale}/messages.json structure. React Native apps using react-native-localize or expo-localization are also supported for i18next files.