Drag & drop a folder into each box below (or click to browse). PDFs in subfolders are included. Everything is processed locally in your browser — nothing is uploaded anywhere.
Confirm page → output drawing mapping
Multi-page markup file: the app pre-fills the map — it prefers a drawing number found in the page text; when none is found (e.g. drawings were renumbered) it falls back to output filename order, so double-check each row (use "open PDF to verify"). If the folder holds several markup revisions, tick only the latest one.