KERNIT is a browser-based academic paper formatter that converts plain text, Markdown, or existing Word DOCX files into publication-ready manuscripts. It applies the typographic rules of 9 major journal styles — margins, fonts, heading hierarchy, reference formatting, equation numbering — and exports editable DOCX, LaTeX source files, or HTML. All processing happens in your browser; no manuscript content is ever uploaded to a server. KERNIT also includes a standalone Cross-Reference Hyperlinker: upload any Word DOCX and it automatically hyperlinks citations, figure references, table references, equation references, section references, and DOIs throughout the document — the same internal navigation LaTeX provides natively, but for Word files.