macOS Universal
One application for both Intel and Apple Silicon Macs.
- Architecture
- Intel (x86_64) + Apple silicon (arm64)
- Requires
- macOS 14.4 or later
Until then, Intel Macs have no edition: the Apple Silicon build does not run on them.
Every detail.
Clearly.
View, annotate, edit, convert and present engineering drawings with precision.
A powerful offline workspace for Mac, Windows and Linux.
Less friction.
More flow.
One thoughtful workspace for the work around your drawings. Open a folder, find the detail, make your point, and send it on.
Every hairline.
At every zoom.
Dense sheets deserve a clear view. Tile-based rendering keeps fine linework crisp as you move from the whole picture to the smallest detail.
Turbine / blade detail
−+INTERACTIVE ILLUSTRATION
1.5–4800%
Real application zoom range
A0 to A5
Plus ANSI sheet recognition
150 / 220 / 300
DPI clipboard copies
Nested folders. Multiple PDFs. Adjustable thumbnails. Multi-page navigation, panning and drag and drop. A library that keeps up.
A clear thought.
A precise mark.
Pen, highlight, circle, arrow. Add numbered callouts with linked comments. Undo, refine, and copy your review. The original PDF stays untouched.
TRY MARK / SIMPLIFIED WEB DEMOOriginal protected ✓
1 A number on the sheet. A thought beside it.
MARK in the app · live size previews · select, restyle, delete · copy at 300 DPI
From markup
to meeting.
Queue your pages. Arrange your story. Export to PowerPoint with your drawing on the right and editable numbered comments on the left.
NUMBERED COMMENTS
- Review the midspan section.
- Review the blade root fit.
- Check the airfoil surface.
Added to the PowerPoint queue · 3 comments
Real output of version 2.3.0. MARK added the callouts and the app’s own export wrote the deck; title, comments, picture and positions above are read from that file. In PowerPoint the comments are editable text.
No Office needed
Write .pptx files locally
Editable comments
Your notes stay useful
Your workflow
New deck or existing presentation
The PowerPoint queue in the app · Sample drawings
New in version 2.3.0Three new workspaces.
Three new workspaces.
One familiar app.
Edit PDF, Image and Vector sit on their own tabs beside the Viewer and PDF Tools. They work on your computer, like everything else.
EDIT PDFWhen a markup
When a markup
isn’t enough.
MARK adds a temporary review layer and never touches the original. Edit PDF changes the document itself and saves a new PDF, with undo for the whole session.
MARK
Review
Pens, highlights, numbered callouts and comments over the page. Copy, queue or save a marked copy.
EDIT PDF
Change
Real PDF content: searchable text, shapes, images, notes, redaction, rotation and crop. Saved with Save As.
Edit PDF in the app · a box and a revision note added as real PDF content
- Add searchable text, rectangles, ellipses, lines, images and PDF notes; move and resize them numerically.
- Replace an isolated line of original text in a standard PDF font, keeping the drawing underneath.
- Redact a region for real: its text, image pixels and touching linework are removed, not covered.
- Pages: rotate and crop without flattening. Merge, split, reorder and more live in PDF Tools.
Original PDFs don’t carry an editable design structure: original vector linework, images and form fields can be inspected but not reshaped, and replacement text uses standard Latin-1 PDF fonts.
IMAGE EDITORMore than drawings.
More than drawings.
Edit every detail.
Site photos, product shots, scans. A layered image editor with selections, masks, healing and exports sized to fit, without leaving your drawings.
Real output of the app’s one-click Remove background automatically, with a 1 px feather from Select › Feather / grow / smooth. It is a conventional algorithm, not an AI model: it suits objects on a plain or distinct backdrop.
Layers & masksRectangle & ellipse selectionLasso & polygonal lassoMagic WandQuick SelectionMagic EraserBackground EraserSpot HealingClone StampObject removalCrop, resize, rotate, flipRulers, guides & gridBrush & highlighterText, shapes & numbered commentsBlend modesNative clipboard formats
EXPORT TO A FILE SIZE
Small enough to send.
Set a target and the app searches the quality, and optionally the dimensions, measuring the real encoded file every time.
- File size
- 103 KB
- Pixels
- 1600 × 1200
- JPEG quality
- 92
- File size
- 78 KB
- Pixels
- 1600 × 1200
- JPEG quality
- 87
- File size
- 50 KB
- Pixels
- 1600 × 1200
- JPEG quality
- 64
- File size
- 20 KB
- Pixels
- 906 × 680
- JPEG quality
- 54
Each picture is the unchanged file the app exported. Exports: JPEG, PNG, TIFF, WebP, BMP, GIF, AVIF and HEIF.
The Image Editor in the app · background hidden by a layer mask, fully reversible
The sample is an original, opaque render of a fictional part, made with CAD and Blender. Opens PNG, JPEG, TIFF, BMP, WebP, GIF, HEIC and AVIF. AI Select Subject works with an optional model pack you install yourself and that runs offline; none is bundled. Up to 80 megapixels and 64 layers per image; saved as an editable .engimg project.
VECTOR EDITORFrom pixels
From pixels
to precision.
Draw and edit real geometry in millimetres. Trace a raster outline into editable paths, then export SVG or DXF for your cutter, CAD or illustration tool.
- Closed contours
- 5
- Editable points
- 148
- Traced size
- 284.1 × 70.6 mm
Real output of the app’s tracing and export, and the files are yours to open. The picture is an original render at 8 pixels per millimetre of a 284 × 70.8 mm model. Small print on the display fell below the trace’s noise filter, and refining took the outline from 1,455 points to 148. Traces are straight segments that follow curves closely.
The Vector Editor in the app · the same trace · millimetre rulers, nodes, layers, SVG and DXF export
- Draw lines, Bézier paths, rectangles, ellipses and text; edit nodes and handles.
- Combine with union, difference, intersection and exclusion; group, align, layer, lock.
- Measure in mm, cm or inches with rulers, guides, grid snapping and calibration to a known width.
- Trace with presets for laser cutting, engraving, vinyl, CAD import and illustration, side by side with the original.
A trace is a starting point, not a finished cutting file. Cutting checks warn about open, duplicate and crossing paths, but you still check scale, kerf and your machine. Photographs can trace poorly. No G-code; DWG is not supported.
New format.
Same computer.
Move between drawings, documents and images without sending your work away. A complete PDF Tools workspace, with 32 tools in seven groups.
START WITH
PDF.pdf
MAKE IT
Editable text or page pictures in a Word document.
One workspace.
Every desk.
The same Viewer, MARK, PowerPoint export, PDF Tools and editors on every edition, built from one source, each fitting in with its system.
- A native Apple Silicon edition today; a Universal edition for Intel Macs is coming soon
- Scan with iPhone through Continuity Camera; OCR with Apple Vision
- Send slides into a presentation open in PowerPoint, or export a .pptx file
- macOS spelling, native menus and trackpad gestures
- Portable: unzip and run, no administrator rights
- Send slides into a presentation open in PowerPoint
- Windows spelling; OCR with bundled Tesseract data (7 languages)
- Title bars follow light and dark mode
Screenshots of the Windows edition will appear here once they are taken on a real Windows desktop. Until then, we only show what we have verified.
- One AppImage for x86-64 with glibc 2.34 or later
- Native Wayland or X11; desktop-portal file dialogs
- Help › Add to Applications Menu
- HEIC through bundled libheif; OCR with bundled Tesseract data
Screenshots of the Linux edition will appear here once they are taken on a real Linux desktop. Until then, we only show what we have verified.
Your files.
Your computer.
Engineering work deserves a private workspace. PDFs, images, vectors and presentations are processed on your computer, without accounts, cloud uploads or telemetry.
- Offline by design. The app refuses network connections in its own code, and its tests check it.
- Offline AI, if you want it. Optional model packs run on your computer. Nothing is downloaded automatically.
- Originals stay untouched. Drawings open read-only; tools and editors write new files.
- Share with care. Redact and Remove Metadata also clear bookmarks, comments, attachments, links and form fields.
Make room
for better work.
Free and open source, for Mac, Windows and Linux.
macOS Apple Silicon
Native ARM64 build for M-series Macs.
- Architecture
- Apple silicon (arm64), M1 or newer
- Requires
- macOS 14.4 or later
Windows
Standalone Windows x64 edition.
- Architecture
- 64-bit (x64)
- Requires
- Windows 10 (1809 or later) or Windows 11
Linux
Portable x86-64 AppImage.
- Architecture
- 64-bit (x86-64)
- Requires
- glibc 2.34 or later (Ubuntu 22.04, Debian 12, Fedora 35, RHEL 9 or newer)
1. Review the midspan section.
2. Review the blade root fit.
3. Check the airfoil surface.