3D View
Free Online 3D Viewer for PCB and CAD files. Drag and drop STEP, STL, OBJ, and other 3D models to visualize your designs instantly in the browser.
Free Online STEP, STL & OBJ File Viewer — No Upload, No Registration
View STEP, STL, OBJ, IGES, and 12 other 3D file formats directly in your browser. Drag your file into the viewer above — your design data never leaves your device, and no account is required.
This viewer processes all files locally inside your browser using WebAssembly. Your 3D model data — including proprietary enclosure geometry, PCB layout models, and assembly files — is never transmitted to any server. Close the tab and all data is cleared immediately.
STEP (.step / .stp) is the recommended format for PCB enclosure and mechanical assembly review. Export it from Altium Designer, KiCad, SOLIDWORKS, Fusion 360, or FreeCAD using the standard "Export 3D" or "STEP export" function.
Compressed files not supported. Upload a single extracted 3D file only. Do not upload .zip, .rar, or .7z archives — the viewer cannot open them. If your file is inside an archive, extract it first, then drag the 3D file directly into the viewer.
Your Files Never Leave Your Device
All rendering happens inside your browser. No data is uploaded, stored, or shared. Zero IP risk.
Use STEP for Best Results
Export a .step file from your ECAD or MCAD tool for the most accurate representation of your PCB assembly.
File Not Loading? We Can Help
Our engineers review any 3D format manually — free of charge, no commitment. Contact us →
Free PCB DFM Review — Send Your STEP & Gerber Files, Get a Report in 12 Hours
The 3D viewer shows you how your model looks. A Highleap DFM review tells you whether it can be manufactured. Our engineers check your STEP and Gerber files together against real production constraints — at no charge, with no obligation to order.
PCB Enclosure & Connector Fit
Verify your PCB fits correctly inside its enclosure, connectors align with panel cutouts, and mounting holes match your mechanical drawings — before a single board is manufactured.
Component Height & Clearance Check
Tall components — capacitors, connectors, heat sinks, inductors — cause conflicts in tight enclosures. A 3D review identifies clearance violations that a 2D Gerber review cannot detect.
HDI, Rigid-Flex & Stack-Up Validation
Our engineers cross-reference your STEP file with your Gerber output to validate HDI stack-up feasibility, component placement, polarity markings, and SMT assembly access in one review.
Submit Your Files
Send your STEP file and Gerber set via email or the contact form
Engineer Review
A Highleap PCB engineer checks fit, clearances, and DFM issues manually
Written Report
Receive a structured English report within 12–24 hours, no cost
Into Production
Approved? We fabricate from 5pcs prototype to full volume production
Custom PCB Quote Online — HDI, Multilayer & Rigid-Flex from a Certified China Factory
Highleap Electronics manufactures HDI, high-layer-count, rigid-flex, and RF PCBs for OEM customers in 40+ countries. Send your files and get a detailed fabrication quote within 12 hours — prototype quantities from 5 pieces, mass production to 100,000+ boards per month.
Talk to an Engineer
Send your 3D file, Gerber set, or project question. We reply in English within 12 hours — no bots, no auto-replies.
Contact Us for a Free Review & QuoteISO 9001 · ISO 13485 · IATF 16949 · UL
Certified quality management for medical, automotive, aerospace, and industrial OEMs. Factory audits welcome.
12-Hour Engineer Response
Every file review and fabrication quote is handled by an English-speaking PCB engineer — not automated software.
5pcs Prototype to Volume Production
Same factory, same engineers, same IPC Class 3 standards — from 5 prototype boards to 100,000+ per month.