CAD & PCB Tools

Free browser tools to view and inspect STEP, IGES, DXF and BREP drawings and Gerber, Excellon and KiCad printed-circuit files without installing CAD software.

Universal CAD Viewer

View STEP, IGES, BREP, STL and DXF files in your browser, no install or upload — 3D solids in an orbit viewer, DXF drawings on a 2D canvas.

CAD Mass Properties Calculator

Compute volume, surface area, centroid, bounding box and weight from a STEP, IGES, BREP or STL file, with ~20 material density presets, entirely in your browser.

STEP Assembly Inspector

Load a STEP, IGES or BREP file and browse the assembly it encodes — sub-assemblies, leaf parts, and per-node vertex, triangle and face counts.

STEP Part Extractor

Browse a STEP, IGES or BREP assembly's hierarchy, check one or more parts or sub-assemblies, and export each as a standalone STL, GLB or OBJ file.

DXF Layer Viewer

Open a DXF drawing in the browser, inspect every layer and entity type, and toggle layers on or off to see exactly what is on the drawing.

DXF Cleaner

Removes duplicate lines and arcs, unused layer definitions, and tiny geometry from a DXF drawing, and reports exactly what it removed before you download the cleaned file.

Gerber PCB Viewer

Overlay a Gerber/Excellon fabrication package as a realistic PCB image, with copper, soldermask, silkscreen and drill layers toggled on or off.

Gerber Preflight Checker

Scan a Gerber/Excellon fabrication package for missing layers, an unclosed board outline, drills falling outside it, and other common fab problems.

Gerber to SVG/PDF

Turn Gerber/Excellon layers into a real, scalable SVG file, or a PDF sized to the board's true physical dimensions.

Excellon Drill Viewer

Inspect an NC (Excellon) drill file on its own: tool table with sizes in mm and inch, hole and slot counts, plating status, and a 2D plot of every hole.

Pick-and-Place Viewer

Plot a centroid / pick-and-place CSV as a top and bottom board view, search designators, and inspect each component's position, rotation and side.

BOM Analyzer

Analyze an electronics BOM CSV: detect its column mapping, find duplicate part numbers, flag rows missing a designator or part number, and export a cleaned, grouped CSV.

IPC-356 Netlist Viewer

Read an IPC-D-356A bare-board test netlist and see every net, its test points, and which nets have only one access point — a real flying-probe testability risk.

KiCad Board Inspector

Open a .kicad_pcb file and see its layer stack, board size, footprints, nets, and track/via minimums a fab house checks — no KiCad install needed.