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Documentation

Quick Start

What is Rackula?

Section titled “What is Rackula?”

Rackula is a free, open-source rack layout designer for homelabbers. Plan your server rack layouts visually—no account required, runs entirely in your browser.

Key features:

  • Drag-and-drop rack planning
  • 19 branded device packs (Dell, Ubiquiti, Synology, and more)
  • Export to PNG, SVG, PDF, or CSV
  • Share layouts via URL or QR code
  • Dark and light themes
  • Works offline after first load

Getting started

Section titled “Getting started”

  1. Open Rackula

    Go to count.racku.la. The app loads instantly in your browser—no installation required.

  2. Create your first rack

    Click New Rack in the toolbar. Set your rack height in U (rack units). Common sizes:

    • 42U — Full-height data centre rack
    • 25U — Half-height rack
    • 12U — Wall-mount or desktop rack

  3. Add devices

    Open the device library in the sidebar. Drag devices onto your rack and drop them at the desired U position.

  4. Customise your devices

    Double-click any device to edit its name, category, and colour. Resize devices by dragging their edges.

  5. Save your work

    Your layout auto-saves to browser storage. For backups, click Export and download as JSON, or use Share to generate a shareable URL.

Understanding rack units

Section titled “Understanding rack units”

A rack unit (U) is the standard unit of measurement for server rack equipment. One U equals 1.75 inches (44.45mm) in height.

Equipment Typical height
1U server 1U
Standard switch 1U
2U server 2U
UPS 2U–6U
NAS 1U–4U

Next steps

Section titled “Next steps”

UI Overview

Learn the Rackula interface—toolbar, sidebar, canvas, and panels.

Explore the UI →