Phantaslate

Translate Without a Trail.

Translation should serve you, not study you.

Phantaslate is an open-source, privacy-first translation tool. Your words are yours — we keep no logs, we publish everything we do, and we let you verify it.

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Why Phantaslate?

Problem	Phantaslate's Answer
Google Translate feels like surveillance	Stateless relay — nothing is stored
DeepL is unstable or blocked in many regions	Region-aware model routing
ImmersiveTranslate had a data breach	Open-source relay, auditable by anyone
CJKV translations route awkwardly through English	Native CJKV model support — no English pivot

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Features

• 🔒 Privacy by design — stateless relay, zero translation logs
• 🌏 CJKV-native — Chinese, Japanese, Korean, Vietnamese translated without routing through English
• 🌍 9 languages — focused and done well, not 100 languages done poorly
• 🔍 Fully auditable — every line of code is open, from extension to relay
• ⚖️ Region-aware backends — Qwen/DeepSeek for Asia · Mistral for Europe · Llama for the US
• 🧩 Browser extension first — Chrome, Chromium, and Firefox
• 🖥️ Desktop & mobile apps coming in V2

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Supported Languages (V1)

Code	Language
en	🇺🇸 English (American)
zh-Hans	🇨🇳 Chinese (Simplified)
zh-Hant	🇹🇼 Chinese (Traditional)
ja	🇯🇵 Japanese
ko	🇰🇷 Korean
vi	🇻🇳 Vietnamese
fr	🇫🇷 French
de	🇩🇪 German
ru	🇷🇺 Russian
es	🇪🇸 Spanish

Arabic (ar) is planned for V1.1.

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Architecture

User text
    │
    ▼
Browser Extension  (lightweight UI shell, ~500KB)
    │
    ▼
Phantaslate Relay  (open source, stateless, self-hostable)
    │
    ├── Qwen / DeepSeek  ← default · Asia-Pacific users
    ├── Mistral          ← EU users · GDPR-native
    └── Meta Llama       ← US users · open weights
    │
    ▼
Translation returned → Extension renders → Nothing stored

The relay is stateless by design. It receives text, calls the model API, returns the result, and writes nothing to disk. Even if the server were compromised, there is nothing to leak.

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Roadmap

Version	Scope	Status
V1	Browser Extension (Chrome, Chromium, Firefox)	🚧 In development
V2	Desktop app (Windows, macOS) + Mobile (iOS, Android)	📋 Planned
V1.1	Arabic language support + RTL rendering	📋 Planned

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Self-Hosting the Relay

Power users and privacy maximalists can run their own relay. This means your translation text never touches our servers at all.

# Coming soon — Docker instructions will be added here

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Contributing

We welcome contributions of all kinds. Please read CONTRIBUTING.md before opening a pull request.

Areas where help is especially welcome:

• Firefox extension compatibility
• RTL rendering (for future Arabic support)
• Language quality testing (native speakers)
• Documentation and translations of the docs themselves

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License

Phantaslate is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0).

This means:

• ✅ You can use, study, and modify the code freely
• ✅ You can self-host your own relay
• ✅ You can fork and build on this project
• ❌ You cannot take this code, modify it, and run it as a closed proprietary service without releasing your changes

See LICENSE for the full text.

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Mission

Phantaslate exists because translation should never come at the cost of trust.

We build an open, auditable, lightweight tool focused on the languages people actually use — including the CJKV pairs that big platforms route awkwardly through English.

We keep no logs. We publish what we do. We let you verify it.

Translation should serve you, not study you.

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phantaslate.com