Lingxi Fanyi

Lingxi Fanyi is an AI translation platform specializing in PDF documents. Its core strength lies in faithfully preserving the original layout—font colors, bold, font size, indentation, etc.—while translating, making it ideal for academic papers, manuals, and resumes. Users can choose from multiple large language models (e.g., qwen-3.6-plus, deepseek-v4, glm-5.1) and preview translations for free before committing to a full translation. Over 60 additional PDF tools run locally in the browser without registration, ensuring privacy.

On the downside, full translation appears to require login or payment, though pricing is not publicly disclosed. It currently focuses on PDFs, with no mention of other formats. As a product in active development, translation stability and model coverage may vary.

It suits researchers, students, and professionals who need accurate, layout-preserving PDF translation and can benefit from the free preview and local tools. It may not satisfy those needing batch translation of non-PDF files or completely free unlimited full translations.