Document input
Upload a document or paste a focused excerpt, then build a source-grounded language guide. PDFs keep the original file for side-by-side reading while analysis works from extracted text.
Upload document
Select a PDF, DOCX, text, or markdown file. GemmaLens extracts text first, then opens the source reader for section learning.
PDF, DOCX, TXT, MD
PDF and DOCX files are converted to text first. Long files open in the source reader before section lessons are prepared. Scanned PDFs or image-only DOCX files need OCR or pasted text.Hosted demos send files over 4 MB directly to the private backend upload path, preserving the original source file up to 25 MB.