> For the complete documentation index, see [llms.txt](https://docs.viesus.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.viesus.com/installation.md).

# Installation

- [System Requirements](https://docs.viesus.com/installation/requirements.md): Minimum and recommended hardware and software requirements for each VIESUS interface.
- [CLI & Viewer](https://docs.viesus.com/installation/cli.md): Install the VIESUS CLI and Viewer on Windows or Linux, including the CPU and GPU installer variants.
- [AI Add-ons](https://docs.viesus.com/installation/add-ons.md): Install the VIESUS AI Upscaling, Artifact Removal, and Background AI add-on installers on Windows.
- [PDF Enhancer](https://docs.viesus.com/installation/pdf.md): Install the VIESUS PDF Enhancer on Windows and Linux. Includes GPU and CPU variants, verification steps, and release notes.
- [Node.js Module](https://docs.viesus.com/installation/nodejs.md): Install the VIESUS Node.js native module on Ubuntu 22.04 with Node.js 18 and NVIDIA GPU support.
- [Updating](https://docs.viesus.com/installation/updating.md): Use the VIESUS Patch installer to update individual components, such as the Commandline tool, without a full reinstall.


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