trn 0.1.3

CLI tool to translate text with LLM

trn

A CLI tool for translating text using LLMs.

Features

• Multiple input sources: command line arguments, stdin, clipboard, URLs, or files
• Supports LLMs from OpenAI, Anthropic, and Google Gemini
• Configurable via command line arguments or environment variables

Installation

If you have uv installed, you don't need to install the package—just use uvx trn. You can also install it normally:

uv tool install trn
# or
pip install trn

Usage

First, set the key for your LLM provider. Example for Google Gemini:

uvx --with llm-gemini llm keys set gemini

Second, specify your target language via the TRN_TO_LANGUAGE environment variable or -t argument. The -t argument takes priority when both are set.

Third, provide text to translate in one of these ways:

• command line arguments
• standard input
• clipboard

The tool checks for arguments first, then standard input, then the clipboard.

You can also translate web pages or local PDF/image files by providing a URL or file path.

Basic Usage

# Translate from clipboard to default language
trn

# Translate command line text
trn -t french Hello world

# Translate from stdin
echo "Hello world" | trn -t german

# Translate a file
trn -t italian document.txt

# Translate from URL
trn -t japanese https://example.com/article

Configuration

Set environment variables for convenience:

export TRN_TO_LANGUAGE=spanish
# optionally:
export TRN_MODEL=gpt-4o-mini

Options

• -t, --to-language: Target language (required)
• -m, --model: LLM model to use (default: gpt-4o-mini)
• --prompt: Custom translation prompt
• -v, --verbose: Enable verbose output
• -d, --debug: Enable debug output

Advanced Examples

# Use different model
trn -t spanish -m claude-3-haiku "Good morning"

# Custom prompt
trn -t french --prompt "Translate to formal French" "How are you?"

# Translate web article
trn -t german https://news.example.com/article

Requirements

• Python 3.12+
• LLM API keys configured