chaiNNer

Spec sheet

Purpose

chaiNNer is a desktop node editor for building image processing pipelines.Read 11 Oct 2026 · chainner.app

Platforms

The download page lists Windows installer and portable builds, a macOS installer, and Linux Debian/Ubuntu, Fedora/RHEL, and portable builds.Read 11 Oct 2026 · chainner.app

Free plan

YesRead 20 Sep 2026 · chainner.app

Support

The maker directs users to Discord for sharing chains, models, and help, and to GitHub issues for bug reports.Read 11 Oct 2026 · chainner.app

License

The maker describes chaiNNer as a hobby project under the GPLv3 license.Read 11 Oct 2026 · chainner.app

Batch processing

YesRead 20 Sep 2026 · chainner.app

Command line

Saved chains can be run from the command line as a step in a larger pipeline.Read 11 Oct 2026 · chainner.app

Desktop app

YesRead 20 Sep 2026 · chainner.app

Image processing

It supports upscaling, resizing, background removal, color work, blending, format conversion, batch runs, and video frames.Read 11 Oct 2026 · chainner.app

Known issue

The v0.25.0 release notes say ONNX DirectML support is currently broken.Read 11 Oct 2026 · chainner.app

Maximum scale

8xRead 20 Sep 2026 · chainner.app

Model engines

It runs models through PyTorch, NCNN, ONNX, or TensorRT, with CPU fallback.Read 11 Oct 2026 · chainner.app

Model support

Its maintained Spandrel package supports ESRGAN, SPAN, OmniSR, and dozens of other architectures, and the site points users to OpenModelDB for community-trained models.Read 11 Oct 2026 · chainner.app

Python setup

On first launch, chaiNNer downloads an isolated Python build and manages dependencies through a built-in Dependency Manager; users can choose system Python instead.Read 11 Oct 2026 · chainner.app

Release caveat

The download page says the Alpha v0.25.1 release resumed after more than a year without a stable release and that development is at reduced capacity.Read 11 Oct 2026 · chainner.app

Security note

The download page says macOS code signing was disabled for Alpha v0.25.1 because it caused build issues and warns users they may see an installation warning.Read 11 Oct 2026 · chainner.app

Upscaling method

aiRead 20 Sep 2026 · chainner.app

Workflow features

Chains support conditional branching, looping over folders or video, math, and building text and filenames from values.Read 11 Oct 2026 · chainner.app

Plans and prices

Every chaiNNer plan and price →

Where Specifiction places it

• Image Upscaling Software#35 of 998.2