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Solid 3D simulation
Inspect pockets, holes, channels, edge notches and relief machining as a clear solid result.
CNC preview and simulation
CNC Viewer
Turn machining files into an inspectable 3D result, colored toolpaths, operation statistics and a dimensioned technical drawing.
Machining files are processed locally in your browser.
One workspace, four clear views
See what the machine will remove
Move from program data to a visual result without installing desktop CAD/CAM software.
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Color-coded toolpaths
Separate tools by color, assign cutter diameters and compare the programmed path with the result.
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Technical drawing
Generate a top view with overall dimensions, hole locations, channel details and notch measurements.
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Machining statistics
Review diameters, depths, positions, orientations, tool changes and estimated machining information.
Built for real workshop files
Multiple CNC formats, one inspection flow
Load G-code, plotter paths and common woodworking machining files. Cutter diameter, compensation, density and material controls remain available when the source needs additional setup.
Check a machining fileNCTAPNGCGCODEPLTMPRXMLHOPNCD
From file to decision
A direct inspection workflow
LoadSelect a supported CNC file or drop it into the viewer.
ConfigureConfirm tools, thickness, depth and simulation density.
InspectCompare 3D machining, paths, statistics and dimensions.
Practical CNC reference
Understand the file behind the preview
Learn how machining formats store geometry, why tool diameter changes the solid result, and how to verify Z depth before production.
Format guide
NC, TAP, MPR, HOP and PLT explained
See what each format normally contains and which values may require confirmation.
Inspection guide
Read toolpaths, depth and compensation
Understand cutter width, Z origins, offsets, drilling and simulation density.
Depth guide
Identify Z zero and cutting depth
Compare top, bottom and positive-Z conventions with worked panel examples.
Tool geometry
Verify diameter and compensation
Understand centerline, inside and outside processing without doubling cutter width.
Format diagnostics
Troubleshoot MPR and HOP files
Review variables, duplicate operations, edge drilling and missing tool data.
Verification workflow
Use the pre-machining checklist
Check stock, tools, removed volume, holes, contours and dimensions in order.
Project information
How CNC Viewer handles machining files
Learn what is processed locally, what the viewer supports and where its limits are.
Support and file requests
Need help with a CNC file?
Contact us for support, questions or feedback. If there is another CNC file format you would like CNC Viewer to support, send us a sample file with a short description.
admin@cnc-viewer.com