SumatraPDF earned its reputation on Windows as the fastest lightweight PDF reader. Open instantly, read clean, no bloat. For pure reading, it is hard to beat. The limits show up the moment the workflow needs more: annotation that survives in another viewer, text editing, page reordering, drawing-set markup that gets sent back to a contractor or architect. SumatraPDF was never built for that. This page is for SumatraPDF users who outgrew read-only viewing.

What SumatraPDF is good at and where it stops

SumatraPDF reads PDF, EPUB, MOBI, CBZ, XPS, DjVu and a few other formats fast. The codebase is small and the Windows install footprint is tiny. There is no licence cost and no telemetry. Where it stops: no real annotation toolset, no text editing, no page reorder, no PDF combining, no native Mac client, no measurement, no structured markup that survives round-trip with Bluebeam Revu or Adobe Acrobat. For construction drawings that need any kind of markup or for a Mac architect, SumatraPDF was never the answer.

How Ncored differs from SumatraPDF

Ncored keeps the fast-paint open experience SumatraPDF users expect (50 MB plus drawing sets in under a second), adds full editor capabilities (mark up, redline, combine PDFs, edit text inline, add and delete images, view signed documents), and ships native on Mac (Apple Silicon) and Windows 10 and 11. Standard PDF annotations survive round-trip with Adobe Acrobat, Bluebeam Revu, Apple Preview and Foxit PDF Editor. Drawing stays on the local drive, no cloud upload required. €12.99 per month, €79.99 per year, or €159 lifetime per seat.

Same fast-paint open SumatraPDF users expect
Heavy drawings open in under a second on current generation laptops.
Full markup that survives round-trip
Standard PDF annotations work with Bluebeam, Acrobat, Apple Preview and Foxit.
Native Mac client
Apple Silicon native, no Rosetta. SumatraPDF is Windows-only.
PDF combining, text editing, page reorder
Beyond pure reading. Real editor for the construction workflow.
No cloud upload, no signup, no email needed
Same local-first philosophy SumatraPDF users value.

Try the 14-day free trial

Download Ncored

SumatraPDF vs Ncored in honest comparison

SumatraPDF wins for read-only document viewing on Windows when no markup is needed and the file budget is zero. Ncored wins when the workflow needs annotation, text editing, page reorder, PDF combining, Mac client, or markup round-trip with Bluebeam and Acrobat. Both keep the drawing on the local drive with no cloud upload. SumatraPDF is free. Ncored is €79.99 per year or €159 lifetime per seat.

Frequently Asked Questions

Is SumatraPDF still maintained in 2026?
Yes, SumatraPDF receives ongoing updates from its developer Krzysztof Kowalczyk. The codebase remains small and the Windows install footprint is tiny.
Does Ncored run on Linux like SumatraPDF?
Not currently. Ncored is native on Mac (Apple Silicon) and Windows 10 and 11. Linux support is not on the current roadmap.
Can my SumatraPDF annotations transfer to Ncored?
SumatraPDF supports basic standard PDF annotations as of recent versions, and those transfer to Ncored. Any older annotations from versions before standard support need to be re-applied.
Is there a free version of Ncored?
Free 14-day trial. Download, install and start using right away. No signup, no email, nothing to enter.
Does Ncored have Studio Sessions style live collaboration like Bluebeam?
No. Multi-user real-time sessions are not currently shipped. The current workflow is desktop-first single-user with standard PDF annotation round-trip to other viewers.