G-code Inspector

The G-code Inspector is a Premium bottom panel that lets you view, search, and analyze the generated toolpath. It also displays configuration warnings that might affect print quality. It is available in the web app and the desktop app once a Premium license is activated.

Opening the Inspector

• Keyboard shortcut: Ctrl+B (toggle open/close)
• Click the header bar: Click "INSPECTOR" at the bottom of the screen
• Warning badge: Click the warnings badge in the sidebar
• Export G-code: If any blocking or review warnings exist, download opens this Inspector and lists them before the file save. Blocking issues still prevent generated-module export. Non-blocking warnings can continue with Export anyway.

Tabs

The inspector has two tabs:

Readiness Tab

Displays configuration issues organized by severity:

Click a warning to jump directly to the relevant parameter in the sidebar. This makes it easy to fix issues without hunting through settings. For a full list of Profile and SynthBlocks warnings and how to fix them, see Warnings reference.

G-code Tab

Displays the generated G-code with these features:

• Line numbers: Each line is numbered for easy reference
• Search: Find specific commands or coordinates
• Line selection: Click to select lines and highlight them in 3D
• Pagination: Large files load in batches for performance

Generating G-code for Preview

G-code is generated when you export, but you can preview it without saving:

1. Switch to the G-code tab
2. Click the Generate button
3. Wait for generation to complete

Searching G-code

The search bar lets you find specific content:

1. Type your search query (e.g., G1, Z50, retract)
2. Matching lines are highlighted in amber
3. Use ▲/▼ buttons to jump between results
4. Current result shows a brighter highlight

Common search queries:

Line Selection and 3D Highlighting

One of the most powerful features: selecting G-code lines highlights them in the 3D preview.

Selection Methods

How It Works

1. Click a G-code line in the inspector
2. The corresponding toolpath segment highlights in red in the 3D viewer
3. Use Ctrl+Click to build up a multi-line selection
4. Use Shift+Click to select a range of consecutive lines

Use Cases

• Identify problem areas: Select lines around a visual artifact to understand what's happening
• Verify layer transitions: Select lines at layer boundaries to confirm proper Z movement
• Check retraction: Find E- commands and select them to see where retractions occur
• Validate travel moves: Select G0 commands to see travel paths

Pagination

Large G-code files can have tens of thousands of lines. The inspector uses pagination for performance:

• 1500 lines are shown initially
• Load more: Click to load the next batch
• Load all: Shows the entire file (may be slow for very large files)

Warnings Reference

Common warnings you might see:

Keyboard Shortcuts

Tips

• Use the inspector with the layer slider to isolate specific height ranges
• Generate G-code after major changes to catch issues early
• The warning count badge in the header updates in real-time
• Blocking warnings prevent export — fix them to enable the export button