Printing

Fluidd provides tools to preview, monitor, and manage your prints — from G-code visualization to thumbnail previews and print history.

G-code Viewer

Fluidd's G-code viewer provides a 2D visualization of the currently selected layer. It can automatically follow print progress and show information about the moves being executed. Multi-tool prints are supported, with each tool shown in a distinct color.

Frequently used settings are accessible via the cog icon in the card header. Less common options can be found on Fluidd's settings page.

Exclude Object

The G-code viewer has Exclude Object support built in. To exclude an object from your current print (for example after a failure), click the cancel icon in the G-code preview or bring up a list of all objects by clicking the cancel icon in the card header.

Excluded objects are marked in red, the currently printing object in blue, and all other objects in green.

For this feature to work:

• Turn on Label Objects in your slicer.
• Add an [exclude_object] section to your printer.cfg or fluidd.cfg.
• Set enable_object_processing: True in the [file_manager] section of moonraker.conf. Alternatively, configure object preprocessing in your slicer.

This only works on files uploaded after enabling these settings — Moonraker needs to process the file with object preprocessing turned on.

Thumbnails

Fluidd can display thumbnail previews of your print files. The recommended sizes are:

• 300x300 — for large previews
• 48x48 — for file browser thumbnails

PrusaSlicer (2.3.0+)

1. Open Printer Settings → General tab → Firmware section.
2. Set G-code thumbnails to 48x48/PNG, 300x300/PNG.

PrusaSlicer (2.2.0 and below)

1. Click Help → Show Configuration Folder, then close PrusaSlicer.
2. Open the printer folder and edit your printer profile.
3. Set thumbnails = 48x48, 300x300.
4. Restart PrusaSlicer.

SuperSlicer

1. Open Printer Settings → General tab → Thumbnails section.
2. Set Small to 48x48 and Large to 300x300.

OrcaSlicer

1. Open Printer Settings → Basic information tab.
2. In the Thumbnails section, ensure 48x48/PNG and 300x300/PNG are listed. OrcaSlicer includes these by default for most printer profiles.

Cura

OctoPrint plugin (recommended): Enable slicer uploads, then install the OctoPrint Connection plugin. Use the Print with OctoPrint button after slicing.

Post-processing script: Go to Extensions → Post Processing → Modify G-Code. Add two Create Thumbnail scripts — one at 300x300 and one at 48x48.

Bed Mesh

Fluidd has a built-in bed mesh viewer. Navigate to the printer page and calibrate a mesh to view it.

You need [bed_mesh] configured in Klipper for this option to appear.

Print History

Fluidd integrates with Moonraker's print history component to give you insights into past prints.

Fluidd loads the last 50 prints by default. The full history can hold up to 10,000 entries — a dedicated History page is available from the main navigation for a full-screen view.