Stack Pix

Node-based AI photo studio for Windows

Drag nodes, wire them up, run the result on thousands of photos. 53 node types and 81 ready-made workflows — all inference happens on your own machine.

  • 81 workflows · 53 node types
  • Background removal, AI culling, depth-based 3D
  • Your photos never leave your computer
Buy full licenceDownload free version

Local processing only — your images are never uploaded, and no account is required.

Visual pipeline builder

A ComfyUI-style canvas, but built for photo work: every node has a form, a preview and a summary.

  • Drag, connect, box-select, copy, undo/redo, minimap and grid
  • Condition nodes branch on width, height or file size, with automatic dead-branch skipping
  • Merge, switch, reroute, comment and subgraph nodes keep large graphs readable
  • Live preview: change a parameter, see the result without re-running the whole graph
  • Open as many workflow windows as you need — they share one engine

Batch, grouping and output control

The batch semantics are the point: an entire folder is one job, and grouping decides how results come out.

  • Array semantics: one input set fans out through map nodes, then folds back with reduce nodes
  • Group by folder, filename prefix, fixed count — or let AI cluster faces so every person in a group shot gets their own set
  • 1→N fan-out (grid slicing, stereo views) and N→1 reduction (collage, best group photo, ID-photo layout)
  • Resume by fingerprint (path + size + mtime): unchanged files are skipped, finished work is kept
  • Pause, resume and stop between images and between nodes
  • Name templates with {index}, {date}, {group}, {width}… and automatic subfolders

AI that removes the boring part

The unglamorous 80% of photo work — cutting out, cleaning up, sorting a shoot — done locally and in bulk.

  • Background removal: RMBG-2.0, BiRefNet (general & portrait) and MODNet, plus object extraction and AI backgrounds
  • AI culling: flags exposure problems, missed focus, closed eyes and near-duplicates, then splits keepers from rejects
  • Best group photo: fuses a burst into one frame, picking each person’s best expression
  • Watermark removal, smart erase, fingerprints and dust cleanup
  • Portrait retouch, makeup, face restore, old-photo restore and document scanning

Depth-based effects

One depth estimate powers a whole family of effects that usually need a 3D pipeline.

  • Depth haze, depth-of-field blur and re-lighting computed from real depth
  • Stereo pair: 1→N views for 3D viewers, generated by forward-scatter reprojection
  • Anaglyph red/cyan output for classic 3D glasses
  • Wiggle GIF: a looping parallax animation with smooth easing

Everyday editing and delivery

The unexciting controls you need on every job, in the same graph as the AI steps.

  • 17-parameter adjustments, filters, curves, colour and HSL tools
  • Crop, perspective correction, transform and smart aspect presets
  • Grid slicing, collages, multi-copy ID-photo layouts
  • Borders, sticker outlines, blur, halftone, selective recolour, privacy mosaic
  • Text, QR-code and image overlays
  • Compression to MozJPEG / WebP / AVIF / JXL — animated GIFs are written through untouched

From one flat photo to a depth-driven set

Stack Pix estimates depth once, then reuses it across six node types. No separate 3D tool, no manual masking.

  • Depth haze (fog_drm)
  • Depth-of-field bokeh
  • Depth-based relighting
  • Stereo pair (N views)
  • Anaglyph red/cyan
  • Wiggle GIF

Interface screenshots are being prepared — they will be added here shortly.

System requirements

Operating system
Windows 10 / 11 (64-bit)
Installer
MSI package, unbranded window shell
GPU
Optional — NVIDIA CUDA speeds up AI nodes, CPU fallback works without it
First-run download
≈700 MB engine pack, then models on demand
Model storage
Any drive — pick a folder in Settings, not tied to C:
App language
English, 简体中文
Network
Only needed to download models and to activate
Account
None — a licence key is enough

AI models are large by nature (hundreds of MB to a few GB each). They download on demand from ModelScope, with Hugging Face as fallback, and stay on your disk.

Pricing

One-time payment, no subscription. Taxes are calculated at checkout — the payment provider is the merchant of record.

Pricing is unavailable right now — please try again in a moment.

Try it free first

The free version is not a demo with locked buttons: every node type works.

  • All 53 node types available
  • Up to 3 nodes per workflow
  • Unlimited workflows, unlimited photos
  • No account, no watermark, no expiry

Download

The installer is not published yet. It will appear here as soon as the build is ready.

The installer is code-signed and published with a SHA-256 checksum.

Questions

Do my photos get uploaded?

No. All image processing runs locally on your machine. The only network calls are model downloads and licence activation.

Do I need a GPU?

No. Every node works on CPU. An NVIDIA GPU with CUDA makes the AI nodes significantly faster, but it is optional.

How many computers can I install it on?

That depends on the plan you buy — the number of devices is shown next to the price. Each machine is activated separately, and you can release a device yourself from the “My licences” page when you switch computers.

I replaced my computer. What now?

Release the old device in “My licences” and activate the new one — the seat is freed immediately. If the old machine is already gone, contact support with your order number.

What do I get in the free version?

Every node type, up to 3 nodes per workflow, unlimited workflows and photos. Buying a licence removes the node limit.

Which formats are supported?

JPEG, PNG, WebP, AVIF, JXL, GIF (animated GIFs are preserved frame-for-frame), TIFF and BMP. Output format is decided by the export node.

The model download failed. Can I retry?

Yes. Models are fetched on demand, and the download can be resumed. If ModelScope is unreachable, Stack Pix falls back to Hugging Face automatically, and you can point the model folder at any drive in Settings.

Do updates cost extra?

Updates within the major version you bought are free. If a future major version ships, you keep using the version you own — upgrading is optional.

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