vkdt

Overview

vkdt is a free, open-source workflow toolbox for processing raw photographs and video. It suits photographers and video makers who want to build GPU-driven processing pipelines; its defining trade-off is that it requires a Vulkan-capable graphics card.

Key features

At the center is a flexible node graph with multiple inputs and outputs, implemented using GLSL shaders and Vulkan. That structure gives users control over how processing stages connect, rather than confining them to a fixed sequence. GPU-only processing is designed for high performance, but the hardware requirement makes vkdt a poor fit for systems without Vulkan support.

For still photography, vkdt combines colour management and noise profiling with a folder-based image database, automatic parameter optimisation and U-Net-based denoising. Catalog workflow, lens correction and local adjustments round out its editing tools. This breadth makes it more than a basic raw converter, though the node-graph approach will appeal most to users willing to shape their own workflows.

Video support includes real-time work with animations, timelapses and raw video, including Magic Lantern MLV and MotionCam MCRAW. Supported inputs include JPEG, OpenEXR, raw stills and video; exports include JPEG, JPEG XL, OpenEXR, PFM, BC1, H.264, ProRes and video. The command-line utility replaces display nodes with export nodes, making it useful for export-focused workflows.

Pricing

vkdt is free and open source: its free plan costs nothing. There is no free trial because the software is already free. The code is generally under the 2-clause BSD licence, though some source files contain GPLv3 code.

Platforms

vkdt is available for Linux, macOS and Windows. It needs a Vulkan-capable GPU; the maker recommends 4 GB of video RAM, or at least 8 GB for large graphs or images above 50 megapixels. Downloads include a source release, nightly AppImage, nightly Windows binaries and NixOS packages. Support is available through the #vkdt channel on oftc.net or the pixls.us discussion forum.

Who it's for

Choose vkdt if you want a free raw-photo and video toolbox that combines a configurable node graph, catalog workflow, local adjustments and a command-line export path. It is less suitable if your device lacks Vulkan support or does not have enough video memory for the images and graphs you plan to process.

Pros and cons

• Pro: One workflow covers raw stills, timelapses and video, including MLV and MotionCam raw footage.
• Pro: The node graph and CLI give both interactive users and export-focused workflows room to customize processing.
• Pro: Colour management, denoising, lens correction and catalog features support a broad photography workflow at no charge.
• Con: Vulkan-capable hardware is mandatory, and large images or graphs call for at least 8 GB of video RAM.
• Con: The pipeline's graph-based design may be a worse fit for users who prefer a conventional fixed-sequence raw developer.

Alternatives

darktable is another free, open-source photography workflow application for Linux, macOS and Windows; choose it if you want a GPLv3-or-later option instead of vkdt's Vulkan-based node workflow.

RawTherapee suits free raw development on Linux, macOS or Windows if you do not need digital asset management, printing or uploading features.

Nikon NX Studio is a free macOS and Windows option when Nikon camera and file-format support fits your setup.

dcraw is a free alternative for Linux and Windows.

FUJIFILM X RAW STUDIO is a free macOS and Windows option if you have a compatible FUJIFILM camera connected by USB.

Hasselblad Phocus offers free RAW image processing software for Mac and PC.

Canon Digital Photo Professional is a free option for supported EOS digital cameras and PowerShot models with RAW capability.

ON1 Portrait AI is a paid alternative with a free trial for macOS and Windows; its listed license and subscription plans cover two and three computers respectively.

For more options, browse RAW Photo Processing Software and Photo Editing Software.

Verdict

vkdt is a strong fit for technically minded photographers and video makers who want a free, configurable GPU workflow spanning raw stills and video. Its node graph, broad input and export support, and CLI make it unusually flexible; look elsewhere if your hardware lacks Vulkan support or you want a conventional raw-processing workflow.