LocalePack

What is LocalePack?

LocalePack translates the messages.json file of a Chrome extension into other languages and returns it in the folder structure Chrome expects. You upload the source file, which can be up to 500KB, choose target languages from a list of 52 locales such as de, ja, pt_BR and zh_CN, see a price based on file size, and pay once through Stripe. It then translates every language in parallel and builds a _locales ZIP with one messages.json per language, usually within a few minutes. The service understands Chrome's format, so $PLACEHOLDER$ tokens and placeholders blocks stay exactly as written, and the description fields are read as context to improve translations. It can also translate a Chrome Web Store listing within the store's character limits, and the terms say it handles web app i18n JSON files for next-intl and i18next. There is no subscription: orders carry a $9.99 minimum fee, with optional Priority Processing at +$5 for delivery within 1 hour.

Use cases

• Translate a Chrome extension messages.json
• Localize a Chrome Web Store listing
• Generate a _locales folder for 52 languages
• Translate i18n JSON for next-intl or i18next
• Keep placeholders intact across languages
• Ship a localized extension release quickly

Who it's for

• Chrome extension developers
• Indie developers
• Small product teams

Why use LocalePack

• Pay once per order, with no subscription or monthly fee, which suits one-off releases.
• Output follows Chrome's folder and file structure, so you can drop the ZIP into your extension.
• Placeholders are left untouched, which avoids broken strings after translation.
• All languages are translated at the same time, so a 52-locale release does not take days.
• The price is shown from your file size before you pay.

LocalePack features

• Parses and validates Chrome extension messages.json files
• Protects $PLACEHOLDER$ tokens and placeholders blocks
• Uses description fields as context for translations
• 52 target locales with Chrome-style codes such as pt_BR and zh_CN
• Ready-to-use _locales/{lang}/messages.json ZIP export
• Languages translated in parallel, with most jobs finishing in under 5 minutes
• Price estimate based on file size before you pay
• Chrome Web Store listing translation with character limits enforced
• Support for web app i18n JSON files such as next-intl, react-i18next and i18next
• Optional Priority Processing for delivery within 1 hour

LocalePack integrations

• Stripe
• Chrome Web Store
• next-intl
• react-i18next
• i18next

How to get started with LocalePack

1. Upload your source messages.json, which LocalePack parses and validates against the Chrome format.
2. Select the target languages and see the price based on your file size.
3. Pay once through Stripe, optionally adding Priority Processing.
4. LocalePack queues the job and translates all selected languages in parallel.
5. Download the ZIP of _locales/{lang}/messages.json folders and add it to your extension.

LocalePack limitations

• Source files are limited to 500KB
• It is not a full translation-management system: no shared translation memory, review workflow or repository sync
• Uploaded files and translations are stored for 7 days and then deleted
• AI translations are provided as-is, so critical text should be reviewed

LocalePack pricing

LocalePack has no free plan. Plans start at $9.99 one-time, according to the official pricing page on 24 Oct 2026.

LocalePack plans

• Translation order

  From $9.99

  One-time payment per order

  • Minimum fee of $9.99
  • Price based on file size and languages
  • Ready _locales ZIP download

• Priority Processing

  +$5

  Optional add-on per order

  • Delivery within 1 hour

Plans as listed on the official pricing page on 24 Oct 2026. Prices can change and may vary by country or exclude tax. Check the official pricing page.

LocalePack alternatives

The main LocalePack alternatives listed on Debuly are Lokalise, Phrase, Grammarly, X-doc AI, Compose AI and DeepL API. The table compares pricing and platforms; order is A–Z.

1. 

   Compose AI

   Free Chrome extension that autocompletes sentences and drafts emails and posts in the web apps where you already type.

   WritingProductivity
   FreemiumVisit Compose AI (official site)
2. 

   DeepL API

   REST API for DeepL machine translation, writing improvement and voice translation, with a free Developer plan and usage-based Growth plan.

   WritingDeveloper platformsProductivity
   FreemiumVisit DeepL API (official site)
3. 

   Grammarly

   AI writing assistant that fixes grammar, adjusts tone, rewrites sentences and drafts text in the apps and sites where you write.

   WritingProductivityMarketing and SEO
   FreemiumVisit Grammarly (official site)
4. 

   Lokalise

   Localization platform that manages translation keys, AI and machine translation, and review workflows for software and content teams.

   Developer platformsWritingAutomation and agents
   Free trialVisit Lokalise (official site)
5. 

   Phrase

   Localization platform with translation management, software localization, AI machine translation and workflow automation for enterprise teams.

   WritingDeveloper platformsAutomation and agents
   Contact salesVisit Phrase (official site)
6. 

   X-doc AI

   X-doc AI translates Word, Excel, PowerPoint and PDF files in 100+ languages while keeping the layout, with optional human typesetting.

   WritingProductivity
   Free trialVisit X-doc AI (official site)

LocalePack FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from localepack.app · fetched 24 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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