PDF Annotation Tool

This tool enables in-browser PDF annotation for quick markup, notes, highlights, and collaboration. Users upload a PDF, apply annotations (highlights, underlines, strikethroughs, callouts, stamps), and save a new annotated document.
Conceptually, the tool separates data (PDF file) from annotations stored as a layer. Annotations can be exported as a new PDF with embedded marks or as a separate metadata package for downstream review.
Benefits include accelerated literature reviews, contract reviews, and classroom feedback where multiple stakeholders markup the same document. Unique value lies in operating entirely in-browser with standards-compliant annotation rendering and straightforward export options, enabling cross‑device workflows without vendor lock-in.
Core features include multiple annotation types, per-page organization, embedded notes, and exportable annotation bundles. Use cases range from academic paper reviews to legal document markup and product spec annotations.