PDF AI replaces the 4–5 fragmented apps most people use for documents-scanner, signer, reader, invoice tool, and redaction, with a single intelligent workspace. ✦ Scan with AI —auto-crop, perspective correction, live OCR ✦ Chat with PDFs —on-device or Google Cloud AI ✦ Magic Wand Redact —one tap removes emails, numbers, addresses ✦ Sign & annotate —signature pad, stamps, watermarks ✦ Smart Invoice Generator —auto tax, multi-currency ✦ Vector semantic search —finds docs by meaning, not filename