What is Polyglot?
Polyglot is an AI translation tool that localizes JSON i18n files, plain text, and entire apps into 50+ languages for developers, product teams, and marketers. It automatically detects the source language, preserves i18n key structure so translated files stay drop-in ready, and lets teams lock terminology with glossaries and enforce tone controls for consistent brand voice. Beyond raw translation, Polyglot works as a localization workspace: projects carry version history and style guides, automated quality checks flag issues, and role-based access, progress tracking, and approval workflows keep teams in sync. Developers can manage strings without leaving their editor through a dedicated VS Code extension, while copywriters, marketers, and localization managers handle headlines, campaign copy, and UI strings from the same project. The site advertises processing that is "10x faster" than alternatives and pitches translating an entire app in seconds. Pricing is not published on the homepage; the tool offers a "Get started for free" entry point, but specific paid tiers and limits are not shown. Polyglot is a good fit for teams that want translation tied to real localization workflows rather than one-off copy-paste output.
What is Polyglot used for?
Developers and product/marketing teams use Polyglot to translate JSON i18n files, UI strings, and app copy into 50+ languages with glossaries and team workflows.
How much does Polyglot cost?
Paid
Get started for free (free entry point advertised; paid tiers not published)
Pros and cons
Pros
- Translates JSON i18n files while preserving key structure, so output is drop-in ready for developers
- Automatic source-language detection plus glossary term-locking and tone controls for consistent output
- VS Code extension lets developers manage translations without leaving their editor
- Localization workflow features: projects, version history, style guides, role-based access, and approval steps
- Handles 50+ languages in a single pass
Cons
- No pricing tiers or limits published on the site, so cost at scale is unclear
- New/unproven tool with a thin public track record
- Focused on i18n/app localization, so it may be overkill for one-off document translation
- Quality of machine output still needs human review for nuanced or high-stakes copy
Questions about Polyglot
What is Polyglot?
Polyglot is an AI-powered translation and localization tool that turns JSON i18n files, plain text, and entire apps into 50+ languages. It detects the source language automatically, preserves i18n key structure, and adds glossaries, tone controls, and team approval workflows so localization stays consistent across a project.
Is Polyglot free?
Polyglot advertises a free entry point with a "Get started for free" call-to-action. Specific paid tiers, usage limits, and prices are not published on its homepage, so the cost of higher-volume use is not stated.
Who is Polyglot for?
It targets developers, product teams, marketers, copywriters, and localization managers. Developers use the VS Code extension to translate UI strings in i18n files, while marketing and content teams localize headlines and campaign copy from the same projects.
How is Polyglot different from Google Translate or DeepL?
Unlike general-purpose translators, Polyglot is built for software localization: it parses JSON i18n files and preserves their key structure, locks terminology with glossaries, and wraps translation in project workflows with version history, style guides, and approvals, plus a VS Code extension.
Does Polyglot support JSON i18n files?
Yes. Polyglot translates JSON i18n files directly and preserves the key structure, so the translated files stay drop-in ready for your app without manual re-keying.
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