Universal Translator#

Translate any document format while preserving layout and formatting.

Features#

• 📄 All Formats: Word, PDF, Excel, PPT, HTML, Markdown, TXT
• 📁 Batch Translation: Translate entire folders
• 🎯 Terminology: Keep terms consistent
• 🌍 50+ Languages: Chinese, English, Japanese, etc.
• 📐 Format Preserved: Keep original layout

Supported Formats#

FormatExtensionMethodWord.docxpython-docxExcel.xlsxopenpyxlPowerPoint.pptxpython-pptxPDF.pdfpymupdfHTML.htmlBeautifulSoupMarkdown.mdtext processingText.txttext processing

Note: Only modern formats are supported. For .xls files, convert to .xlsx first.

Trigger Conditions#

Only when the user asks to translate a document file (Word/PDF/Excel/PPT/HTML/MD/TXT) to another language.

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How Translation Works#

⚠️ 数据外发提醒：文档内容由 AI 读取并逐段发送至配置中的 LLM 进行翻译。LLM 的运行位置（本地/远程）取决于 OpenClaw 配置。

This is a Framework Skill: it provides document parsing boilerplate (read Word/Excel/PPT/PDF files, iterate paragraphs/cells/shapes, write output). The AI agent's own LLM performs the actual translation.

Translation workflow:

1. Use the Python code below to open the document and extract text
2. For each paragraph/cell/shape, translate the text using your LLM
3. Write the translated text back into the document
4. Save the output file

Note: The _translate_text method is a stub — you MUST replace it with actual LLM translation. The stub exists only to let you test the parsing flow; do not use it in production.

Python Code#

python

import os
from pathlib import Path
from docx import Document
import openpyxl
from pptx import Presentation

class UniversalTranslator:
    def __init__(self):
        self.supported = {
            'word': ['.docx'],
            'excel': ['.xlsx', '.xls'],
            'powerpoint': ['.pptx'],
            'pdf': ['.pdf'],
            'html': ['.html', '.htm'],
            'markdown': ['.md'],
            'text': ['.txt']
        }

    def detect_format(self, file_path):
        """Detect file format"""
        ext = Path(file_path).suffix.lower()

        for format_type, extensions in self.supported.items():
            if ext in extensions:
                return format_type

        return 'unknown'

    def translate_word(self, input_path, output_path, translator_fn):
        """Translate Word document.

        Args:
            translator_fn: callable(text, target_lang) -> translated_text
                           Agent should pass its LLM translate function here.
        """
        doc = Document(input_path)

        for para in doc.paragraphs:
            if para.text.strip():
                translated = translator_fn(para.text, 'en')
                para.clear()
                para.add_run(translated)

        for table in doc.tables:
            for row in table.rows:
                for cell in row.cells:
                    if cell.text.strip():
                        translated = translator_fn(cell.text, 'en')
                        cell.text = translated

        doc.save(output_path)
        return output_path

    def translate_excel(self, input_path, output_path, translator_fn):
        """Translate Excel file."""
        wb = openpyxl.load_workbook(input_path)

        for sheet in wb.worksheets:
            for row in sheet.iter_rows():
                for cell in row:
                    if cell.value and isinstance(cell.value, str):
                        translated = translator_fn(cell.value, 'en')
                        cell.value = translated

        wb.save(output_path)
        return output_path

    def translate_pptx(self, input_path, output_path, translator_fn):
        """Translate PowerPoint."""
        prs = Presentation(input_path)

        for slide in prs.slides:
            for shape in slide.shapes:
                if hasattr(shape, 'text') and shape.text.strip():
                    translated = translator_fn(shape.text, 'en')
                    shape.text = translated

        prs.save(output_path)
        return output_path

    def translate_markdown(self, input_path, output_path, translator_fn):
        """Translate Markdown file."""
        with open(input_path, 'r', encoding='utf-8') as f:
            content = f.read()

        sections = content.split('\n\n')
        translated_sections = []

        for section in sections:
            if section.strip():
                translated = translator_fn(section, 'en')
                translated_sections.append(translated)
            else:
                translated_sections.append('')

        translated_content = '\n\n'.join(translated_sections)

        with open(output_path, 'w', encoding='utf-8') as f:
            f.write(translated_content)

        return output_path

    def translate_folder(self, folder_path, output_folder, target_lang, translator_fn):
        """Translate all files in folder."""
        os.makedirs(output_folder, exist_ok=True)

        results = []

        for file_path in Path(folder_path).rglob('*'):
            if file_path.is_file():
                format_type = self.detect_format(str(file_path))

                if format_type != 'unknown':
                    output_path = os.path.join(output_folder, file_path.name)

                    try:
                        if format_type == 'word':
                            self.translate_word(str(file_path), output_path, translator_fn)
                        elif format_type == 'excel':
                            self.translate_excel(str(file_path), output_path, translator_fn)
                        elif format_type == 'powerpoint':
                            self.translate_pptx(str(file_path), output_path, translator_fn)
                        elif format_type in ['markdown', 'text']:
                            self.translate_markdown(str(file_path), output_path, translator_fn)

                        results.append({'file': file_path.name, 'status': 'success'})
                    except Exception as e:
                        results.append({'file': file_path.name, 'status': 'error', 'error': str(e)})

        return results

## Usage Examples

User: "Translate this Word document to English" Agent:

1. pip install python-docx (if not installed)
2. Use translator.translate_word() to parse .docx
3. For each paragraph, call your LLM to translate
4. Write translated text back, save output

User: "Translate all files in this folder to Chinese" Agent:

1. Ensure required libs are installed
2. Use translator.translate_folder() for parsing
3. Translate text via your LLM
4. Save all translated files

User: "翻译这份PDF成日文" Agent:

1. Extract text from PDF
2. Translate using your LLM
3. Save as new document

text

## Notes

- Supports Word (.docx), Excel (.xlsx), PPT (.pptx), PDF, HTML, Markdown, TXT
- The parsing code preserves original formatting — the AI agent only replaces text content
- Install dependencies: `pip install python-docx openpyxl python-pptx`
- For PDF support: `pip install pymupdf`
- For HTML: `pip install beautifulsoup4`