Trusted by millions of architects, engineers, builders, educators and reviewers to read, mark up and work on documents together — across Windows, macOS, iOS, Android and the web.
The most intuitive way to read, annotate and collaborate on PDFs. Replace your red pen with a natural, paper-like markup experience built for real work — not just filling in forms.
- Natural markup — ink, highlights, shapes, text, stamps and measurement tools
- Document storage & sharing — keep your files together and share with a link
- Live Sync — your markups follow you across every device, in real time
- Quick Tools — merge, split, compress, convert and sign without leaving the app
- Works everywhere — Windows, macOS, iOS, Android and the browser
A shared workspace for design and construction teams to review drawings and drive work to completion. Turn markups into tracked, accountable tasks — and keep everyone, including external collaborators, on the same page.
- Tasks on the drawing — drop a pin, assign an owner, set a due date
- Custom statuses & threaded conversations — track work and resolve it in context
- Centralised task management — see every open item across the project at a glance
- Unlimited guest access — bring in consultants and clients at no extra seat cost
- Built for AEC — architecture, engineering and construction workflows, end to end