Better, with
every detail.

2.3.1 · 4 November 2026 · macOS Apple Silicon, Windows, Linux

Image Editor composition, accuracy and interface fixes. Published for Macs with Apple silicon, Windows and Linux. Image projects with transformed layers are saved as ENGIMG version 2, which 2.3.0 cannot open; the three 2.3.1 editions open the same projects.

New

• Images as layers: drop, paste or import images as layers, then stack, move, scale and rotate them with handles, snapping and numeric fields. Layers keep their original pixels, so repeated transforms never compound blur.
• Clipboard: copy, copy merged, cut, paste as a new layer, and layer via copy or cut with the familiar shortcuts. Copies keep masks, opacity and blend mode inside the editor and reach other apps as PNG or TIFF.
• Paint Bucket with tolerance, contiguous and anti-aliasing options, selection limits and fill on a new layer.

Better

• Magic Eraser tells a light subject from a light backdrop more reliably and stops at visible edges. On a synthetic test figure the match to the true subject rose from 52.7 % to 98–99.8 %; real photographs vary.
• Automatic background removal uses edge-aware seeding and full-resolution edge refinement. It is a helper, not a guarantee: difficult subjects still need the mask tools.
• The window moves by dragging any empty part of the title bar, dropdown labels and arrows no longer overlap, and the View/Grid/Snap/Rulers bar folds into the View menu when space is short.
• The welcome screen's app icon no longer touches the “Open a folder of drawings” heading.

Compatibility

Projects with transformed layers are saved as ENGIMG version 2, which 2.3.0 cannot open. Other projects remain version 1.

2.3.0 · in preparation

One version for every platform, built from the same source. It is being tested and audited and will be listed on the download page once it is released.

New

• Three new workspaces, each on its own tab beside the Viewer and PDF Tools: Edit PDF (text boxes, shapes, images, notes, real redaction, page crop and rotate, Save As),Image (layers, masks, selections, Magic Eraser, automatic background removal, healing, clone, exports to a target file size) and Vector (millimetre geometry, Bézier and node editing, booleans, SVG and DXF, raster tracing).
• Four editions from one source: macOS Apple Silicon, Windows x64 and a new Linux x86-64 AppImage (all out now), and macOS Universal for Intel and Apple Silicon Macs (coming soon).
• Optional offline AI model packs for subject selection, installed by you; none is bundled.
• The Windows improvements of 2.2.1 reach every platform.

Smaller

• OpenCV is built from source with only the parts the app uses, on every edition. The Windows ZIP shrinks from 162 MB to 128 MB and the Linux AppImage from 177 MB to 134 MB, and the packages no longer contain FFmpeg (or, on Linux, OpenSSL 1.1.1k). No features changed.

Faster

• The interface stays responsive while pages render on busy machines.

2.2.1 for Windows (Preview)

The rebuilt Windows version, for Windows 10 and 11 (64-bit). It has the same viewer, MARK, PDF tools and PowerPoint export as the Mac app, and is a Preview until it has been tried on everyday PCs.

• A per-user installer (no administrator rights, Start menu, "Open with") and a portable ZIP.
• Title bars and controls follow Windows 11's look and your light or dark theme.
• Make Searchable (OCR) works out of the box with seven languages.
• Spelling uses Windows' own spell checker, and words you add are remembered.
• iPhone HEIC photos open once Microsoft's free HEIF and HEVC extensions are installed.
• Send slides straight into a presentation open in PowerPoint.
• Open drawings aren't locked, so you can still rename or replace them in Explorer.
• Opening a file while the app is running brings it to the existing window.
• Keyboard shortcuts that work with every keyboard layout, plus Ctrl+, F1 and F5.
• Offline like the Mac app: no network connections, no telemetry.

The shared improvements reached the Mac in 2.3.0.

2.2.0

The first public release. ENG Drawing Viewer becomes free software under the GNU Affero General Public License v3 or later.

New

• About shows the licence and where to get the source code, with the full licence and third-party notices one click away.
• A new spelling dictionary of about 140,000 English words, American and British.
• PDF → Images lowers the resolution for very large sheets instead of failing, and tells you.

Privacy and security

• The app refuses network connections in its own code, in every process.
• Redact and Remove Metadata also clear bookmarks, comments, attachments, links and form fields; redaction also removes linework crossing the redacted text.
• PDF → Excel keeps text as text: no formulas or links can sneak in.
• Protect generates a strong random permissions password if you leave it empty.
• Tools refuse to write over an original, even through links or different capitalisation.
• Extreme page and image sizes are checked before memory is used.
• LibreOffice conversions run contained and stop completely on timeout.
• Atomic saves, and temporary files are always cleaned up.

Under the hood

• Built with Python 3.13 and hash-checked dependencies.
• Runs on macOS 14.4 or later with Apple silicon, tested on macOS 14, 15, 26 and 27.
• Built from the published source; two separate builds are byte-for-byte identical.

Earlier development

Versions 2.0 and 2.1 were private builds. They rebuilt the app around a fast, sharp tiled viewer and the MARK workspace, and added:

• a PDF Tools workspace with 32 offline tools, including Organize Pages and Compare Drawings;
• Scan with iPhone through Continuity Camera on Mac;
• images (including iPhone photos) as one-page documents;
• drag and drop onto the window, the PowerPoint queue and the tools;
• saving a marked page as a PDF with vector markup, and exporting the queue as one PDF.

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