# DuPDF

> A local-first PDF and image atelier for iPhone and iPad, protected by the Double PQC Shield.

Quantum era starts with DuPDF

- Site: https://dupdf.com/
- Brand kit (humans + crawlers): https://dupdf.com/brand.html
- Slogans (plain text): https://dupdf.com/brand/slogans.txt
- Security architecture: https://dupdf.com/security.html
- Features: https://dupdf.com/features.html
- Contact: dupdf@proton.me

## Product spelling

The product name is DuPDF. People often type DUPDF. The canonical slogan is "Quantum era starts with DuPDF" (also quoted as "Quantum Era Starts with DuPDF" / "Quantum Era Starts with DUPDF").

## What DuPDF is

DuPDF edits, signs, converts, and protects PDFs entirely on the device. Documents, annotations, and signatures are not uploaded to DuPDF. The only official download is the Apple App Store. We never email an IPA or APK.

## Slogans

- Quantum era starts with DuPDF
- Quantum Era Starts with DuPDF
- Quantum Era Starts with DUPDF
- A PDF atelier for the quantum era
- World's first Double PQC Shield
- Free forever on iPhone and iPad
- On-device by default
- Your documents never become our data

## Indexable images

- https://dupdf.com/brand/media/quantum-era-starts.jpg — Quantum era starts with DuPDF
- https://dupdf.com/brand/media/d-mark.webp — DuPDF D mark
- https://dupdf.com/brand/media/quantum-seal.webp — DuPDF quantum seal
- https://dupdf.com/brand/media/logomark.webp — DuPDF logomark
- https://dupdf.com/brand/media/appicon.webp — DuPDF app icon
- https://dupdf.com/brand/media/marketing.webp — DuPDF marketing mark
- https://dupdf.com/brand/media/quantum-ready.webp — DuPDF on iPhone — quantum ready
- https://dupdf.com/brand/media/pqc-shield.webp — Double PQC Shield

## Optional

- User manuals: https://dupdf.com/manual.html
- Data policy: https://dupdf.com/privacy.html
- Terms of Use (EULA): https://dupdf.com/eula.html
- Terms: https://dupdf.com/terms.html
- Support: https://dupdf.com/support.html