Gang Sheet Automator packs every tool you need into a fast, clean Windows desktop app — no browser, no subscriptions required to get started.
The MaxRects bin-packing algorithm is one of the most efficient layout engines available. Gang Sheet Automator runs multi-trial rotations to find the densest possible arrangement for every build — automatically, every time.
Designs are tested both upright and rotated 90°. The algorithm picks the orientation that wastes the least space, fitting more transfers per sheet without any manual guesswork on your part.
Import PNG (raster), SVG (vector), PDF, and Adobe Illustrator .AI files in a single job. Full alpha-channel transparency is preserved throughout the entire pipeline from import to export.
Export at 300 DPI with correct DPI metadata embedded in the file. PNG output includes proper pHYs chunks. PDF output wraps each design in a Form XObject so designs remain individually selectable in Adobe Illustrator.
Set any sheet width and height in inches. Works with all standard DTF roll widths — 13", 22", 24", and wider. Configure gap spacing between designs to match your printer's tolerance.
Set individual print sizes and quantities for each artwork file in your job. Need 10 of one design at 4" and 3 of another at 8"? No problem — it all goes into a single build.
Import entire job lists from a CSV file (path, width, height, quantity, rotate) or export your current job for record-keeping and reordering. Ideal for high-volume shops managing large order queues.
Save your entire job layout — artwork files, sizes, quantities, and settings — to a JSON file. Reload it any time to rebuild or reprint without re-entering anything.
Each design in your job list shows a quality indicator based on its native DPI vs. your target print size. Spot low-resolution artwork before you build so you never waste a sheet on a blurry print.
A purpose-built dark UI that's easy on the eyes during long production sessions. Matches the UploadDTF brand and feels right at home on a shop floor monitor.
Built with .NET and WPF — not a web app, not Electron. Gang Sheet Automator runs natively on Windows 10 and 11, with no browser required and no constant internet connection needed to build sheets.
Gang Sheet Automator silently checks for updates in the background and keeps itself current. You always have the latest packing improvements and format support without lifting a finger.
No conversion, no preprocessing. Drop in your files and go.
AI files are handled identically to PDF — modern Illustrator files are valid PDFs internally.
For the technically curious. Every detail is engineered for print accuracy.
| Specification | Detail |
|---|---|
| Packing Algorithm | MaxRects with multi-trial rotation optimization |
| Raster Processing | SixLabors ImageSharp — lossless pipeline |
| SVG Rendering | Svg.Skia (SkiaSharp) at 300 DPI |
| PDF / AI Rasterization | Pdfium (Docnet.Core) at 300 DPI |
| PNG Export DPI | Correct pHYs metadata (pixels-per-metre at 300 DPI = 11,811 ppm) |
| PDF Export | PdfSharpCore — Form XObjects per design for Illustrator selectability |
| Default Output DPI | 300 DPI (configurable per design) |
| Sheet Width Range | Any width in inches — supports all standard DTF roll sizes |
| Platform | Windows 10 / 11 (x64) — native WPF / .NET 10 |
| Resize Quality | Lanczos3 resampling; native-resolution designs skip resampling entirely |
| Settings Persistence | JSON stored in %AppData%\GangSheetAutomator |
| Updates | Clowd.Squirrel — silent background updates |