Number My Document processes PDFs entirely in your browser — page numbering, Bates stamping, watermarking, OCR (English + Hindi), and PDF merging. Zero server uploads, zero watermarks on output, completely free. Open Chrome DevTools → Network tab → use the tool → watch: your file never leaves your device. Built for lawyers, CAs, and anyone handling sensitive documents who can't afford to upload confidential files to cloud services. No registration, no subscription.