Deploy and Host LibreTranslate on Railway

LibreTranslate is a free and open-source machine translation API and web interface powered by Argos Translate. It runs language models locally instead of sending text to proprietary translation providers, giving applications and people a private REST API for translation, language detection, and multilingual workflows.

Published on the Railway marketplace: https://railway.com/deploy/libretranslate-3 (libretranslate-3). See TEMPLATE.md for the publication record and authoritative variable package.

About Hosting LibreTranslate

Hosting LibreTranslate requires one CPU-based application container, a public HTTPS endpoint, persistent model storage, and limits that prevent an exposed translation API from becoming an unbounded compute service. This template pins the Umbrel-tested libretranslate/libretranslate:v1.6.5 image, targets port 5000, and stores Argos models, caches, and the API-key database under one Railway volume at /home/libretranslate/.local. It loads only English, Spanish, French, and German, uses two threads, disables file translation, caps request size and batch count, and rejects anonymous translations. Railway generates one API key per deployment, while /languages remains available for health checks and the web interface remains available for authorized translation.

Common Use Cases

• Adding private machine translation to internal tools, support systems, or content workflows
• Translating text through a self-hosted REST API without sending it to a proprietary provider
• Providing a lightweight browser translation interface for a small authorized team

Dependencies for LibreTranslate Hosting

• One Railway persistent volume mounted at /home/libretranslate/.local
• One Railway-generated HTTPS service domain targeting port 5000
• Argos Translate language models for English, Spanish, French, and German

Deployment Dependencies

• LibreTranslate v1.6.5 documentation and settings
• LibreTranslate API-key management
• Umbrel LibreTranslate package
• Railway volume permissions

Implementation Details

LT_LOAD_ONLY=en,es,fr,de bounds startup time, disk use, and memory demand instead of downloading every available model. LT_CHAR_LIMIT=5000, LT_BATCH_LIMIT=10, LT_THREADS=2, and disabled file translation further bound public resource use. The startup command uses Railway's documented root volume access only to repair ownership, then launches LibreTranslate as its image user, UID/GID 1032. It inserts the Railway-generated LT_API_KEY into LibreTranslate's supported SQLite key database without logging the key. This template includes no reverse proxy, scraper, model-serving sidecar, or third-party translation provider.

Why Deploy LibreTranslate on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway will host your infrastructure so you don't have to deal with configuration, while allowing you to vertically and horizontally scale it.

By deploying LibreTranslate on Railway, you are one step closer to supporting a complete full-stack application with minimal burden. Host your servers, databases, AI agents, and more on Railway.