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Koharu is a free, open-source manga translation application that combines machine learning with visual editing tools. It automates text detection, optical character recognition, translation, and artwork restoration. Users can import manga pages from images, archives, and PDF documents. Its translation pipeline supports local language models and compatible hosted AI providers. Generative inpainting removes original text while reconstructing the surrounding artwork. A WebGPU-powered canvas allows manual cleanup, proofreading, and translated text placement. Multilingual text rendering supports vertical Japanese and Chinese layouts, right-to-left scripts, and automatic font fitting. Additional capabilities include layered PSD export, GPU acceleration, and agent-based project automation.
Features
- Automated manga text detection and OCR for speech bubbles, captions, and dialogue
- AI-powered translation using local GGUF models and compatible cloud providers
- Generative image inpainting for text removal and background artwork reconstruction
- WebGPU-powered editing canvas with manual cleanup and translated text placement
- Multilingual typesetting with vertical CJK, right-to-left text, and automatic fitting
- Multi-format manga project management with layered PSD export and GPU acceleration
Project Samples
