Fluidd is a free and open-source web interface for 3D printers running Klipper. Like Mainsail it is a browser front-end for Moonraker rather than a print host in its own right, and it is shaped around a configurable layout: panels can be dragged wherever you want them, and the same installation can drive several printers.

Key Features

• Responsive by design — the project’s own feature list leads with a UI that works on desktop, tablet and mobile, so the printer can be checked from whatever device is to hand.
• Customisable layouts — any panel can be moved where you want it, which matters on a fixed-size wall display where the useful controls are not the default ones.
• Built-in colour themes — several themes ship with the interface, so it can match a dark workshop or a bright desk without custom CSS.
• Multiple printers from one install — one Fluidd instance can be pointed at more than one printer, which is the difference between a control panel and a print farm console.
• Official Docker image — the project publishes a container image that serves Fluidd on port 80, with documented options for tighter security setups.
• One-command install path — Fluidd can be installed alongside Klipper, Moonraker and their dependencies through KIAUH, the Klipper installer script.

Why use Fluidd?

Fluidd and Mainsail solve the same problem — Klipper has no interface of its own — and the choice between them is mostly about layout taste and workflow. Fluidd’s case is the repositionable panel grid and its multi-printer support: if you want a dashboard you arrange yourself rather than a design someone else decided, this is the one to try. Both are small enough to run comfortably on the same single-board computer as Klipper.

Use cases

• Running a Klipper printer from a tablet or phone on the same network.
• Building a custom dashboard layout for a dedicated touchscreen.
• Watching several printers from a single browser tab.
• Standing up a Klipper stack quickly with KIAUH on a fresh Raspberry Pi.

Requirements

Klipper and Moonraker on the controlling machine. Fluidd is served as static files by Moonraker or from the official Docker image; it needs a browser to use, not a desktop install of its own.

Alternatives

• Mainsail — the other main Klipper interface, with a more opinionated fixed layout and a large feature list.
• OctoPrint — a print host that supports printers beyond Klipper and brings a plugin ecosystem with it.