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translator-ai

by DatanoiseTV
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translator-ai

Fast and efficient JSON i18n translator supporting multiple AI providers (Google Gemini, OpenAI & Ollama/DeepSeek) with intelligent caching, multi-file deduplication, and MCP integration.

Features

  • Multiple AI Providers: Choose between Google Gemini, OpenAI (cloud) or Ollama/DeepSeek (local) for translations
  • Multi-File Support: Process multiple files with automatic deduplication to save API calls
  • Incremental Caching: Only translates new or modified strings, dramatically reducing API calls
  • Batch Processing: Intelligently batches translations for optimal performance
  • Path Preservation: Maintains exact JSON structure including nested objects and arrays
  • Cross-Platform: Works on Windows, macOS, and Linux with automatic cache directory detection
  • Developer Friendly: Built-in performance statistics and progress indicators
  • Cost Effective: Minimizes API usage through smart caching and deduplication
  • Language Detection: Automatically detect source language instead of assuming English
  • Multiple Target Languages: Translate to multiple languages in a single command
  • Translation Metadata: Optionally include translation details in output files for tracking
  • Dry Run Mode: Preview what would be translated without making API calls
  • Format Preservation: Maintains URLs, emails, dates, numbers, and template variables unchanged

Installation

npm install -g translator-ai

Local Installation

npm install translator-ai

Configuration

Option 1: Google Gemini API (Cloud)

Create a .env file in your project root or set the environment variable:

GEMINI_API_KEY=your_gemini_api_key_here

Get your API key from Google AI Studio.

Option 2: OpenAI API (Cloud)

Create a .env file in your project root or set the environment variable:

OPENAI_API_KEY=your_openai_api_key_here

Get your API key from OpenAI Platform.

Option 3: Ollama with DeepSeek-R1 (Local)

For completely local translation without API costs:

  1. Install Ollama
  2. Pull the DeepSeek-R1 model:
    ollama pull deepseek-r1:latest
  3. Use the --provider ollama flag:
    translator-ai source.json -l es -o spanish.json --provider ollama

Usage

Basic Usage

# Translate a single file translator-ai source.json -l es -o spanish.json # Translate multiple files with deduplication translator-ai src/locales/en/*.json -l es -o "{dir}/{name}.{lang}.json" # Use glob patterns translator-ai "src/**/*.en.json" -l fr -o "{dir}/{name}.fr.json"

Command Line Options

translator-ai <inputFiles...> [options] Arguments: inputFiles Path(s) to source JSON file(s) or glob patterns Options: -l, --lang <langCodes> Target language code(s), comma-separated for multiple -o, --output <pattern> Output file path or pattern --stdout Output to stdout instead of file --stats Show detailed performance statistics --no-cache Disable incremental translation cache --cache-file <path> Custom cache file path --provider <type> Translation provider: gemini, openai, or ollama (default: gemini) --ollama-url <url> Ollama API URL (default: http://localhost:11434) --ollama-model <model> Ollama model name (default: deepseek-r1:latest) --gemini-model <model> Gemini model name (default: gemini-2.0-flash-lite) --openai-model <model> OpenAI model name (default: gpt-4o-mini) --list-providers List available translation providers --verbose Enable verbose output for debugging --detect-source Auto-detect source language instead of assuming English --dry-run Preview what would be translated without making API calls --preserve-formats Preserve URLs, emails, numbers, dates, and other formats --metadata Add translation metadata to output files (may break some i18n parsers) --sort-keys Sort output JSON keys alphabetically --check-keys Verify all source keys exist in output (exit with error if keys are missing) -h, --help Display help -V, --version Display version Output Pattern Variables (for multiple files): {dir} - Original directory path {name} - Original filename without extension {lang} - Target language code

Examples

Translate a single file
translator-ai en.json -l es -o es.json
Translate multiple files with pattern
# All JSON files in a directory translator-ai locales/en/*.json -l es -o "locales/es/{name}.json" # Recursive glob pattern translator-ai "src/**/en.json" -l fr -o "{dir}/fr.json" # Multiple specific files translator-ai file1.json file2.json file3.json -l de -o "{name}.de.json"
Translate with deduplication savings
# Shows statistics including how many API calls were saved translator-ai src/i18n/*.json -l ja -o "{dir}/{name}.{lang}.json" --stats
Output to stdout (useful for piping)
translator-ai en.json -l de --stdout > de.json
Parse output with jq
translator-ai en.json -l de --stdout | jq
Disable caching for fresh translation
translator-ai en.json -l ja -o ja.json --no-cache
Use custom cache location
translator-ai en.json -l ko -o ko.json --cache-file /path/to/cache.json
Use Ollama for local translation
# Basic usage with Ollama translator-ai en.json -l es -o es.json --provider ollama # Use a different Ollama model translator-ai en.json -l fr -o fr.json --provider ollama --ollama-model llama2:latest # Connect to remote Ollama instance translator-ai en.json -l de -o de.json --provider ollama --ollama-url http://192.168.1.100:11434 # Check available providers translator-ai --list-providers
Advanced Features
# Detect source language automatically translator-ai content.json -l es -o spanish.json --detect-source # Translate to multiple languages at once translator-ai en.json -l es,fr,de,ja -o translations/{lang}.json # Dry run - see what would be translated without making API calls translator-ai en.json -l es -o es.json --dry-run # Preserve formats (URLs, emails, dates, numbers, template variables) translator-ai app.json -l fr -o app-fr.json --preserve-formats # Include translation metadata (disabled by default to ensure compatibility) translator-ai en.json -l fr -o fr.json --metadata # Sort keys alphabetically for consistent output translator-ai en.json -l fr -o fr.json --sort-keys # Verify all keys are present in the translation translator-ai en.json -l fr -o fr.json --check-keys # Use a different Gemini model translator-ai en.json -l es -o es.json --gemini-model gemini-2.5-flash # Combine features translator-ai src/**/*.json -l es,fr,de -o "{dir}/{name}.{lang}.json" \ --detect-source --preserve-formats --stats --check-keys

Available Gemini Models

The --gemini-model option allows you to choose from various Gemini models. Popular options include:

  • gemini-2.0-flash-lite (default) - Fast and efficient for most translations
  • gemini-2.5-flash - Enhanced performance with newer capabilities
  • gemini-pro - More sophisticated understanding for complex translations
  • gemini-1.5-pro - Previous generation pro model
  • gemini-1.5-flash - Previous generation fast model

Example usage:

# Use the latest flash model translator-ai en.json -l es -o es.json --gemini-model gemini-2.5-flash # Use the default lightweight model translator-ai en.json -l fr -o fr.json --gemini-model gemini-2.0-flash-lite

Available OpenAI Models

The --openai-model option allows you to choose from various OpenAI models. Popular options include:

  • gpt-4o-mini (default) - Cost-effective and fast for most translations
  • gpt-4o - Most capable model with advanced understanding
  • gpt-4-turbo - Previous generation flagship model
  • gpt-3.5-turbo - Fast and efficient for simpler translations

Example usage:

# Use OpenAI with the default model translator-ai en.json -l es -o es.json --provider openai # Use GPT-4o for complex translations translator-ai en.json -l ja -o ja.json --provider openai --openai-model gpt-4o # Use GPT-3.5-turbo for faster, simpler translations translator-ai en.json -l fr -o fr.json --provider openai --openai-model gpt-3.5-turbo

Translation Metadata

When enabled with the --metadata flag, translator-ai adds metadata to help track translations:

{ "_translator_metadata": { "tool": "translator-ai v1.1.0", "repository": "https://github.com/DatanoiseTV/translator-ai", "provider": "Google Gemini", "source_language": "English", "target_language": "fr", "timestamp": "2025-06-20T12:34:56.789Z", "total_strings": 42, "source_file": "en.json" }, "greeting": "Bonjour", "farewell": "Au revoir" }

Metadata is disabled by default to ensure compatibility with i18n parsers. Use --metadata to enable it.

Key Sorting

Use the --sort-keys flag to sort all JSON keys alphabetically in the output:

translator-ai en.json -l es -o es.json --sort-keys

This ensures consistent ordering across translations and makes diffs cleaner. Keys are sorted:

  • Case-insensitively (a, B, c, not B, a, c)
  • Recursively through all nested objects
  • Arrays maintain their element order

Key Verification

Use the --check-keys flag to ensure translation completeness:

translator-ai en.json -l es -o es.json --check-keys

This feature:

  • Verifies all source keys exist in the translated output
  • Reports any missing keys with their full paths
  • Exits with error code 1 if any keys are missing
  • Helps catch translation API failures or formatting issues
  • Ignores metadata keys when checking

Supported Language Codes

It should support any standardized language codes.

How It Works

  1. Parsing: Reads and flattens your JSON structure into paths
  2. Deduplication: When processing multiple files, identifies shared strings
  3. Caching: Checks cache for previously translated strings
  4. Diffing: Identifies new or modified strings needing translation
  5. Batching: Groups unique strings into optimal batch sizes for API efficiency
  6. Translation: Sends batches to selected provider (Gemini API or local Ollama)
  7. Reconstruction: Rebuilds the exact JSON structure with translations
  8. Caching: Updates cache with new translations for future use

Multi-File Deduplication

When translating multiple files, translator-ai automatically:

  • Identifies duplicate strings across files
  • Translates each unique string only once
  • Applies the same translation consistently across all files
  • Saves significant API calls and ensures consistency

Example: If 10 files share 50% of their strings, you save ~50% on API calls!

Cache Management

Default Cache Locations

  • Windows: %APPDATA%\translator-ai\translation-cache.json
  • macOS: ~/Library/Caches/translator-ai/translation-cache.json
  • Linux: ~/.cache/translator-ai/translation-cache.json

The cache file stores translations indexed by:

  • Source file path
  • Target language
  • SHA-256 hash of source string

This ensures that:

  • Modified strings are retranslated
  • Removed strings are pruned from cache
  • Multiple projects can share the same cache without conflicts

Provider Comparison

Google Gemini

  • Pros: Fast, accurate, handles large batches efficiently
  • Cons: Requires API key, has usage costs
  • Available Models:
    • gemini-2.0-flash-lite (default) - Fastest, most cost-effective
    • gemini-pro - Balanced performance
    • gemini-1.5-pro - Advanced capabilities
    • gemini-1.5-flash - Fast with good quality
  • Best for: Production use, large projects, when accuracy is critical

Ollama (Local)

  • Pros: Free, runs locally, no API limits, privacy-friendly
  • Cons: Slower, requires local resources, model download needed
  • Best for: Development, privacy-sensitive data, cost-conscious projects

Performance Tips

  1. Use caching (enabled by default) to minimize API calls
  2. Batch multiple files in the same session to leverage warm cache
  3. Use --stats flag to monitor performance and optimization opportunities
  4. Keep source files consistent to maximize cache hits
  5. For Ollama: Use a powerful machine for better performance

API Limits and Costs

Gemini API

  • Uses Gemini 2.0 Flash Lite model for optimal speed and cost
  • Chooses best batch size dynamically depending on input key count
  • Batches up to 100 strings per API call
  • Check Google's pricing for current rates

Ollama

  • No API costs - runs entirely on your hardware
  • Performance depends on your machine's capabilities
  • Supports various models with different speed/quality tradeoffs

Using with Model Context Protocol (MCP)

translator-ai can be used as an MCP server, allowing AI assistants like Claude Desktop to translate files directly.

MCP Configuration

Add to your Claude Desktop configuration:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

{ "mcpServers": { "translator-ai": { "command": "npx", "args": [ "-y", "translator-ai-mcp" ], "env": { "GEMINI_API_KEY": "your-gemini-api-key-here" // Or for Ollama: // "TRANSLATOR_PROVIDER": "ollama" } } } }

MCP Usage Examples

Once configured, you can ask Claude to translate files:

Human: Can you translate my English locale file to Spanish? Claude: I'll translate your English locale file to Spanish using translator-ai. <use_tool name="translate_json"> { "inputFile": "locales/en.json", "targetLanguage": "es", "outputFile": "locales/es.json" } </use_tool> Successfully translated! The file has been saved to locales/es.json.

For multiple files with deduplication:

Human: Translate all my English JSON files in the locales folder to German. Claude: I'll translate all your English JSON files to German with deduplication. <use_tool name="translate_multiple"> { "pattern": "locales/en/*.json", "targetLanguage": "de", "outputPattern": "locales/de/{name}.json", "showStats": true } </use_tool> Translation complete! Processed 5 files with 23% deduplication savings.

MCP Tools Available

  1. translate_json: Translate a single JSON file
    • inputFile: Path to source file
    • targetLanguage: Target language code
    • outputFile: Output file path
  2. translate_multiple: Translate multiple files with deduplication
    • pattern: File pattern or paths
    • targetLanguage: Target language code
    • outputPattern: Output pattern with {dir}, {name}, {lang} variables
    • showStats: Show deduplication statistics (optional)

Integration with Static Site Generators

Working with YAML Files (Hugo, Jekyll, etc.)

Since translator-ai works with JSON files, you'll need to convert YAML to JSON and back. Here's a practical workflow:

Setup YAML conversion tools
# Install yaml conversion tools npm install -g js-yaml # or pip install pyyaml
Hugo Example with YAML Conversion
  1. Create a translation script (translate-hugo.sh):
#!/bin/bash # translate-hugo.sh - Translate Hugo YAML i18n files # Function to translate YAML file translate_yaml() { local input_file=$1 local lang=$2 local output_file=$3 echo "Translating $input_file to $lang..." # Convert YAML to JSON npx js-yaml $input_file > temp_input.json # Translate JSON translator-ai temp_input.json -l $lang -o temp_output.json # Convert back to YAML npx js-yaml temp_output.json > $output_file # Cleanup rm temp_input.json temp_output.json } # Translate Hugo i18n files translate_yaml themes/your-theme/i18n/en.yaml es themes/your-theme/i18n/es.yaml translate_yaml themes/your-theme/i18n/en.yaml fr themes/your-theme/i18n/fr.yaml translate_yaml themes/your-theme/i18n/en.yaml de themes/your-theme/i18n/de.yaml
  1. Python-based converter for more complex scenarios:
#!/usr/bin/env python3 # hugo-translate.py import yaml import json import subprocess import sys import os def yaml_to_json(yaml_file): """Convert YAML to JSON""" with open(yaml_file, 'r', encoding='utf-8') as f: data = yaml.safe_load(f) return json.dumps(data, ensure_ascii=False, indent=2) def json_to_yaml(json_str): """Convert JSON back to YAML""" data = json.loads(json_str) return yaml.dump(data, allow_unicode=True, default_flow_style=False) def translate_yaml_file(input_yaml, target_lang, output_yaml): """Translate a YAML file using translator-ai""" # Create temp JSON file temp_json_in = 'temp_in.json' temp_json_out = f'temp_out_{target_lang}.json' try: # Convert YAML to JSON json_content = yaml_to_json(input_yaml) with open(temp_json_in, 'w', encoding='utf-8') as f: f.write(json_content) # Run translator-ai cmd = [ 'translator-ai', temp_json_in, '-l', target_lang, '-o', temp_json_out ] subprocess.run(cmd, check=True) # Read translated JSON and convert back to YAML with open(temp_json_out, 'r', encoding='utf-8') as f: translated_json = f.read() yaml_content = json_to_yaml(translated_json) # Write YAML output with open(output_yaml, 'w', encoding='utf-8') as f: f.write(yaml_content) print(f"✓ Translated {input_yaml} to {output_yaml}") finally: # Cleanup temp files for f in [temp_json_in, temp_json_out]: if os.path.exists(f): os.remove(f) # Usage if __name__ == "__main__": languages = ['es', 'fr', 'de', 'ja'] for lang in languages: translate_yaml_file( 'i18n/en.yaml', lang, f'i18n/{lang}.yaml' )
Node.js Solution with Proper YAML Handling

Create translate-yaml.js:

#!/usr/bin/env node const fs = require('fs'); const yaml = require('js-yaml'); const { execSync } = require('child_process'); const path = require('path'); function translateYamlFile(inputPath, targetLang, outputPath) { console.log(`Translating ${inputPath} to ${targetLang}...`); // Read and parse YAML const yamlContent = fs.readFileSync(inputPath, 'utf8'); const data = yaml.load(yamlContent); // Write temporary JSON const tempJsonIn = `temp_${path.basename(inputPath)}.json`; const tempJsonOut = `temp_${path.basename(inputPath)}_${targetLang}.json`; fs.writeFileSync(tempJsonIn, JSON.stringify(data, null, 2)); try { // Translate using translator-ai execSync(`translator-ai ${tempJsonIn} -l ${targetLang} -o ${tempJsonOut}`); // Read translated JSON const translatedData = JSON.parse(fs.readFileSync(tempJsonOut, 'utf8')); // Convert back to YAML const translatedYaml = yaml.dump(translatedData, { indent: 2, lineWidth: -1, noRefs: true }); // Write output YAML fs.writeFileSync(outputPath, translatedYaml); console.log(`✓ Created ${outputPath}`); } finally { // Cleanup [tempJsonIn, tempJsonOut].forEach(f => { if (fs.existsSync(f)) fs.unlinkSync(f); }); } } // Example usage const languages = ['es', 'fr', 'de']; languages.forEach(lang => { translateYamlFile( 'i18n/en.yaml', lang, `i18n/${lang}.yaml` ); });

Real-world Hugo Workflow

Hugo supports two translation methods: by filename (about.en.md, about.fr.md) or by content directory (content/en/, content/fr/). Here's how to automate both:

Method 1: Translation by Filename

Create hugo-translate-files.sh:

#!/bin/bash # Translate Hugo content files using filename convention SOURCE_LANG="en" TARGET_LANGS=("es" "fr" "de" "ja") # Find all English content files find content -name "*.${SOURCE_LANG}.md" | while read -r file; do # Extract base filename without language suffix base_name="${file%.${SOURCE_LANG}.md}" for lang in "${TARGET_LANGS[@]}"; do output_file="${base_name}.${lang}.md" # Skip if translation already exists if [ -f "$output_file" ]; then echo "Skipping $output_file (already exists)" continue fi # Extract front matter awk '/^---$/{p=1; next} p&&/^---$/{exit} p' "$file" > temp_frontmatter.yaml # Convert front matter to JSON npx js-yaml temp_frontmatter.yaml > temp_frontmatter.json # Translate front matter translator-ai temp_frontmatter.json -l "$lang" -o "temp_translated.json" # Convert back to YAML echo "---" > "$output_file" npx js-yaml temp_translated.json >> "$output_file" echo "---" >> "$output_file" # Copy content (you might want to translate this too) awk '/^---$/{p++} p==2{print}' "$file" | tail -n +2 >> "$output_file" echo "Created $output_file" done # Cleanup rm -f temp_frontmatter.yaml temp_frontmatter.json temp_translated.json done
Method 2: Translation by Content Directory
  1. Setup Hugo config (config.yaml):
defaultContentLanguage: en defaultContentLanguageInSubdir: false languages: en: contentDir: content/en languageName: English weight: 1 es: contentDir: content/es languageName: Español weight: 2 fr: contentDir: content/fr languageName: Français weight: 3 # Rest of your config...
  1. Create translation script (hugo-translate-dirs.js):
#!/usr/bin/env node const fs = require('fs-extra'); const path = require('path'); const yaml = require('js-yaml'); const { execSync } = require('child_process'); const glob = require('glob'); const SOURCE_LANG = 'en'; const TARGET_LANGS = ['es', 'fr', 'de']; async function translateHugoContent() { // Ensure target directories exist for (const lang of TARGET_LANGS) { await fs.ensureDir(`content/${lang}`); } // Find all content files in source language const files = glob.sync(`content/${SOURCE_LANG}/**/*.md`); for (const file of files) { const relativePath = path.relative(`content/${SOURCE_LANG}`, file); for (const lang of TARGET_LANGS) { const targetFile = path.join(`content/${lang}`, relativePath); // Skip if already translated if (await fs.pathExists(targetFile)) { console.log(`Skipping ${targetFile} (exists)`); continue; } await translateFile(file, targetFile, lang); } } } async function translateFile(sourceFile, targetFile, targetLang) { console.log(`Translating ${sourceFile} to ${targetLang}...`); const content = await fs.readFile(sourceFile, 'utf8'); const frontMatterMatch = content.match(/^---\n([\s\S]*?)\n---/); if (!frontMatterMatch) { // No front matter, just copy await fs.ensureDir(path.dirname(targetFile)); await fs.copyFile(sourceFile, targetFile); return; } // Parse front matter const frontMatter = yaml.load(frontMatterMatch[1]); const body = content.substring(frontMatterMatch[0].length); // Extract translatable fields const translatable = { title: frontMatter.title || '', description: frontMatter.description || '', summary: frontMatter.summary || '', keywords: frontMatter.keywords || [] }; // Save for translation await fs.writeJson('temp_meta.json', translatable); // Translate execSync(`translator-ai temp_meta.json -l ${targetLang} -o temp_translated.json`); // Read translations const translated = await fs.readJson('temp_translated.json'); // Update front matter Object.assign(frontMatter, translated); // Write translated file await fs.ensureDir(path.dirname(targetFile)); const newContent = `---\n${yaml.dump(frontMatter)}---${body}`; await fs.writeFile(targetFile, newContent); // Cleanup await fs.remove('temp_meta.json'); await fs.remove('temp_translated.json'); console.log(`✓ Created ${targetFile}`); } // Run translation translateHugoContent().catch(console.error);
Hugo i18n Files Translation
  1. Install dependencies:
npm install -g translator-ai js-yaml
  1. Create a Makefile for easy translation:
# Makefile for Hugo translations LANGUAGES := es fr de ja zh SOURCE_YAML := i18n/en.yaml THEME_DIR := themes/your-theme .PHONY: translate translate: $(foreach lang,$(LANGUAGES),translate-$(lang)) translate-%: @echo "Translating to $*..." @npx js-yaml $(SOURCE_YAML) > temp.json @translator-ai temp.json -l $* -o temp_$*.json @npx js-yaml temp_$*.json > i18n/$*.yaml @rm temp.json temp_$*.json @echo "✓ Created i18n/$*.yaml" .PHONY: translate-theme translate-theme: @for lang in $(LANGUAGES); do \ make translate-theme-$$lang; \ done translate-theme-%: @echo "Translating theme to $*..." @npx js-yaml $(THEME_DIR)/i18n/en.yaml > temp_theme.json @translator-ai temp_theme.json -l $* -o temp_theme_$*.json @npx js-yaml temp_theme_$*.json > $(THEME_DIR)/i18n/$*.yaml @rm temp_theme.json temp_theme_$*.json .PHONY: clean clean: @rm -f temp*.json # Translate everything .PHONY: all all: translate translate-theme

Usage:

# Translate to all languages make all # Translate to specific language make translate-es # Translate theme files make translate-theme
Complete Hugo Translation Workflow

Here's a comprehensive script that handles both content and i18n translations:

#!/usr/bin/env node // hugo-complete-translator.js const fs = require('fs-extra'); const path = require('path'); const yaml = require('js-yaml'); const { execSync } = require('child_process'); const glob = require('glob'); class HugoTranslator { constructor(targetLanguages = ['es', 'fr', 'de']) { this.targetLanguages = targetLanguages; this.tempFiles = []; } async translateSite() { console.log('Starting Hugo site translation...\n'); // 1. Translate i18n files await this.translateI18nFiles(); // 2. Translate content await this.translateContent(); // 3. Update config await this.updateConfig(); console.log('\nTranslation complete!'); } async translateI18nFiles() { console.log('Translating i18n files...'); const i18nFiles = glob.sync('i18n/en.{yaml,yml,toml}'); for (const file of i18nFiles) { const ext = path.extname(file); for (const lang of this.targetLanguages) { const outputFile = `i18n/${lang}${ext}`; if (await fs.pathExists(outputFile)) { console.log(` Skipping ${outputFile} (exists)`); continue; } // Convert to JSON const tempJson = `temp_i18n_${lang}.json`; await this.convertToJson(file, tempJson); // Translate const translatedJson = `temp_i18n_${lang}_translated.json`; execSync(`translator-ai ${tempJson} -l ${lang} -o ${translatedJson}`); // Convert back await this.convertFromJson(translatedJson, outputFile, ext); // Cleanup await fs.remove(tempJson); await fs.remove(translatedJson); console.log(` ✓ Created ${outputFile}`); } } } async translateContent() { console.log('\nTranslating content...'); // Detect translation method const useContentDirs = await fs.pathExists('content/en'); if (useContentDirs) { await this.translateContentByDirectory(); } else { await this.translateContentByFilename(); } } async translateContentByDirectory() { const files = glob.sync('content/en/**/*.md'); for (const file of files) { const relativePath = path.relative('content/en', file); for (const lang of this.targetLanguages) { const targetFile = path.join('content', lang, relativePath); if (await fs.pathExists(targetFile)) continue; await this.translateMarkdownFile(file, targetFile, lang); } } } async translateContentByFilename() { const files = glob.sync('content/**/*.en.md'); for (const file of files) { const baseName = file.replace('.en.md', ''); for (const lang of this.targetLanguages) { const targetFile = `${baseName}.${lang}.md`; if (await fs.pathExists(targetFile)) continue; await this.translateMarkdownFile(file, targetFile, lang); } } } async translateMarkdownFile(sourceFile, targetFile, targetLang) { const content = await fs.readFile(sourceFile, 'utf8'); const frontMatterMatch = content.match(/^---\n([\s\S]*?)\n---/); if (!frontMatterMatch) { await fs.copy(sourceFile, targetFile); return; } const frontMatter = yaml.load(frontMatterMatch[1]); const body = content.substring(frontMatterMatch[0].length); // Translate front matter const translatable = this.extractTranslatableFields(frontMatter); const tempJson = `temp_content_${path.basename(sourceFile)}.json`; const translatedJson = `${tempJson}.translated`; await fs.writeJson(tempJson, translatable); execSync(`translator-ai ${tempJson} -l ${targetLang} -o ${translatedJson}`); const translated = await fs.readJson(translatedJson); Object.assign(frontMatter, translated); // Write translated file await fs.ensureDir(path.dirname(targetFile)); const newContent = `---\n${yaml.dump(frontMatter)}---${body}`; await fs.writeFile(targetFile, newContent); // Cleanup await fs.remove(tempJson); await fs.remove(translatedJson); console.log(` ✓ ${targetFile}`); } extractTranslatableFields(frontMatter) { const fields = ['title', 'description', 'summary', 'keywords', 'tags']; const translatable = {}; fields.forEach(field => { if (frontMatter[field]) { translatable[field] = frontMatter[field]; } }); return translatable; } async convertToJson(inputFile, outputFile) { const ext = path.extname(inputFile); const content = await fs.readFile(inputFile, 'utf8'); let data; if (ext === '.yaml' || ext === '.yml') { data = yaml.load(content); } else if (ext === '.toml') { // You'd need a TOML parser here throw new Error('TOML support not implemented in this example'); } await fs.writeJson(outputFile, data, { spaces: 2 }); } async convertFromJson(inputFile, outputFile, format) { const data = await fs.readJson(inputFile); let content; if (format === '.yaml' || format === '.yml') { content = yaml.dump(data, { indent: 2, lineWidth: -1, noRefs: true }); } else if (format === '.toml') { throw new Error('TOML support not implemented in this example'); } await fs.writeFile(outputFile, content); } async updateConfig() { console.log('\nUpdating Hugo config...'); const configFile = glob.sync('config.{yaml,yml,toml,json}')[0]; if (!configFile) return; // This is a simplified example - you'd need to properly parse and update console.log(' ! Remember to update your config.yaml with language settings'); } } // Run the translator if (require.main === module) { const translator = new HugoTranslator(['es', 'fr', 'de']); translator.translateSite().catch(console.error); } module.exports = HugoTranslator;
Using with Hugo Modules

If you're using Hugo Modules, you can create a translation module:

// go.mod module github.com/yourusername/hugo-translator go 1.19 require ( github.com/yourusername/your-theme v1.0.0 )

Then in your package.json:

{ "scripts": { "translate": "node hugo-complete-translator.js", "translate:content": "node hugo-complete-translator.js --content-only", "translate:i18n": "node hugo-complete-translator.js --i18n-only", "build": "npm run translate && hugo" } }

Jekyll with YAML Front Matter

For Jekyll posts with YAML front matter:

#!/usr/bin/env python3 # translate-jekyll-posts.py import os import yaml import json import subprocess import frontmatter def translate_jekyll_post(post_path, target_lang, output_dir): """Translate Jekyll post including front matter""" # Load post with front matter post = frontmatter.load(post_path) # Extract translatable front matter fields translatable = { 'title': post.metadata.get('title', ''), 'description': post.metadata.get('description', ''), 'excerpt': post.metadata.get('excerpt', '') } # Save as JSON for translation with open('temp_meta.json', 'w', encoding='utf-8') as f: json.dump(translatable, f, ensure_ascii=False, indent=2) # Translate subprocess.run([ 'translator-ai', 'temp_meta.json', '-l', target_lang, '-o', f'temp_meta_{target_lang}.json' ]) # Load translations with open(f'temp_meta_{target_lang}.json', 'r', encoding='utf-8') as f: translations = json.load(f) # Update post metadata for key, value in translations.items(): if value: # Only update if translation exists post.metadata[key] = value # Add language to metadata post.metadata['lang'] = target_lang # Save translated post output_path = os.path.join(output_dir, os.path.basename(post_path)) with open(output_path, 'w', encoding='utf-8') as f: f.write(frontmatter.dumps(post)) # Cleanup os.remove('temp_meta.json') os.remove(f'temp_meta_{target_lang}.json') # Translate all posts for lang in ['es', 'fr', 'de']: os.makedirs(f'_posts/{lang}', exist_ok=True) for post in os.listdir('_posts/en'): if post.endswith('.md'): translate_jekyll_post( f'_posts/en/{post}', lang, f'_posts/{lang}' )

Tips for YAML/JSON Conversion

  1. Preserve formatting: Use js-yaml with proper options to maintain YAML structure
  2. Handle special characters: Ensure proper encoding (UTF-8) throughout
  3. Validate output: Some YAML features (anchors, aliases) may need special handling
  4. Consider TOML: For Hugo, you might also need to handle TOML config files

Alternative: Direct YAML Support (Feature Request)

If you frequently work with YAML files, consider creating a wrapper script that handles conversion automatically, or request YAML support as a feature for translator-ai.

Development

Building from source

git clone https://github.com/DatanoiseTV/translator-ai.git cd translator-ai npm install npm run build

Testing locally

npm start -- test.json -l es -o output.json

License

This project requires attribution for both commercial and non-commercial use. See LICENSE file for details.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Support

For issues, questions, or suggestions, please open an issue on GitHub.

If you find this tool useful, consider supporting the development:

This server cannot be installed

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security - not tested
F
license - not found
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quality - not tested

How are these scores calculated?

hybrid server

The server is able to function both locally and remotely, depending on the configuration or use case.

Enables translation of JSON i18n files to multiple languages using various AI providers (Google Gemini, OpenAI, Ollama/DeepSeek) with intelligent caching and deduplication.

  1. Features
    1. Installation
      1. Global Installation (Recommended)
      2. Local Installation
    2. Configuration
      1. Option 1: Google Gemini API (Cloud)
      2. Option 2: OpenAI API (Cloud)
      3. Option 3: Ollama with DeepSeek-R1 (Local)
    3. Usage
      1. Basic Usage
      2. Command Line Options
      3. Examples
      4. Available Gemini Models
      5. Available OpenAI Models
      6. Translation Metadata
      7. Key Sorting
      8. Key Verification
      9. Supported Language Codes
    4. How It Works
      1. Multi-File Deduplication
    5. Cache Management
      1. Default Cache Locations
    6. Provider Comparison
      1. Google Gemini
      2. Ollama (Local)
    7. Performance Tips
      1. API Limits and Costs
        1. Gemini API
        2. Ollama
      2. Using with Model Context Protocol (MCP)
        1. MCP Configuration
        2. MCP Usage Examples
        3. MCP Tools Available
      3. Integration with Static Site Generators
        1. Working with YAML Files (Hugo, Jekyll, etc.)
        2. Real-world Hugo Workflow
        3. Jekyll with YAML Front Matter
        4. Tips for YAML/JSON Conversion
        5. Alternative: Direct YAML Support (Feature Request)
      4. Development
        1. Building from source
        2. Testing locally
      5. License
        1. Contributing
          1. Support

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