tianclll/Ace-Translate

What it solves

AceTranslatePro addresses the privacy and formatting issues associated with online document translation. It eliminates the need to upload sensitive files to the cloud and prevents the common problem of layout corruption (such as broken tables, formulas, and images) when translating complex documents like academic papers and technical manuals.

How it works

The tool runs entirely locally on Windows using a combination of specialized AI models and processing libraries. It uses PDFium and a custom Python-based converter to parse documents, PaddleOCR for text recognition, PPDocLayoutV2 for layout analysis, and local LLMs (via llama.cpp) for the actual translation and formula recognition. It can operate in both GPU (CUDA) and CPU modes.

Who it’s for

It is designed for researchers, engineers, and professionals who handle technical documentation and academic papers and require high privacy, offline capability, and strict preservation of document formatting.

Highlights

• Format Preservation: Translates PDF, Word, Excel, PPT, Markdown, and TXT files while maintaining original structures, tables, and images.
• Privacy-First: Runs 100% locally with no internet connection required.
• Knowledge Base: Allows users to build a personal translation library with full-text search, tagging, and custom terminology injection to ensure consistent translations.
• Multimodal Capabilities: Includes screenshot translation (OCR), voice-to-text (ASR), and text-to-speech (TTS) functionality.
• Developer Friendly: Provides a built-in REST API with 16 endpoints for remote calls and scripting.