Your BIM Models. In the Browser. In Seconds.
3D Expert builds the complete toolchain for putting large-scale AEC/BIM models on the web — from Revit, Bentley, Tekla and Navisworks to interactive browser scenes. All processing runs on your own machines. An 8.7 GB Revit project loads in under 10 seconds.
Official-API extraction · No ODA data loss · Fully offline · Zero telemetry on your models
One Pipeline, Three Products
Free at both ends, licensed where the heavy lifting happens. Everything runs on your infrastructure.
3D/BIM Export Plugins
Install inside Revit, Bentley, Tekla, Navisworks (incl. SP3D/PDMS), SolidWorks, Inventor → export lossless .glzip
Rapid3D Converter
Local lightweighting: Draco, LOD, instancing → web-optimized .opt + .db. Desktop app (free ≤100 MB) or self-hosted service
Rapid3D Loader for Three.js
Free npm package — stream .opt + .db in any Three.js app. 7 APIs, free to redistribute
Open formats (IFC, FBX, STEP, STL, 3DXML, IGES, DAE, DXF) and SKP skip step 1 — the Converter them directly.
The Products
Free reader, licensed writer — the classic model, applied to professional BIM data.
3D/BIM Export Plugins
Dedicated plugins built on each CAD vendor's official API — the only way to guarantee nothing is silently dropped.
- 6 platforms: Revit, Bentley, Tekla, Navisworks, SolidWorks, Inventor
- Geometry, materials, hierarchy & BIM attributes — 100% lossless
- No ODA-based lossy interpretation
Rapid3D Converter
Turns gigabyte-scale models into web-optimized geometry — on your machine or your own server, never in our cloud.
- Desktop app: free forever, all formats, ≤100 MB per model
- Standalone service: RESTful API + management console, per-machine license
- Unlimited conversions, no metering, offline validation
Rapid3D Loader for Three.js
A true Three.js citizen: 7 APIs to load, navigate and query massive models — free to use and redistribute in your own products.
- 3× faster loading than stock format loaders
- LOD streaming, chunk rendering, GPU instancing, culling
- 1:1 geometry-to-data correspondence via documented SQLite .db
Performance From Real Projects
Numbers from production deployments — not lab benchmarks on toy models.
Why Teams Choose 3D Expert
Built for AEC firms, software vendors and digital-twin teams who need web 3D without giving up their data — or their GPU.
Lossless by Design
Proprietary CAD formats are extracted through each vendor's official API — not reverse-engineered. Every component, material and attribute survives the trip. Generic ODA-based viewers silently drop what they can't parse; we don't.
Data Sovereignty, Literally
The entire pipeline runs on your machines. No model upload, no phone-home metering, no network connection required after activation. Suitable for infrastructure, government and defense projects where "cloud-only" is a non-starter.
Performance at Gigabyte Scale
Draco compression, multi-level LOD, instancing and culling are applied automatically during conversion — and exploited by the Loader at runtime. Campus-scale roaming and single-component inspection, both fluid.
Free Reader, Open Data
The Loader npm package and all export plugins are free — including commercial redistribution. Your attribute data lives in a documented SQLite file, readable forever, with zero vendor lock-in. You only pay for the Converter.
Built for the AEC Lifecycle
From design review to facility operations — wherever large BIM models need to reach a browser.
Architecture & Design
Present Revit and Archicad-scale models to clients in design review meetings — no installs, no per-seat viewer licenses, just a link.
EPC & Infrastructure
Federated Bentley, Tekla and Navisworks models — including SP3D and PDMS plant data — reviewed in the browser across project stakeholders.
Construction Management
Check drawings and models on site, extract quantities and component data for procurement, and keep the field team aligned with the latest revision.
Facility O&M
Asset registers, maintenance records and equipment histories attached to live model components — the airport case study is exactly this workflow.
Digital Twin Platforms
Software vendors embed the free Loader in their own products and automate conversion via the RESTful API — no format-engineering team required.
Plant & Energy
Intergraph SP3D (.vue) and AVEVA PDMS (.rvm) plant models extracted through the Navisworks plugin — one plugin, four format families.
Simple, Machine-Based Pricing
Per machine, unlimited conversions, up to 20 concurrent API requests per server, no metering. Annual subscription. Plugins and Loader are always free.
- All formats included
- Input model ≤100 MB
- Full lightweighting pipeline
- Free Loader + free plugins
- Revit (.rvt, .rfa)+SKP
- All 8 open formats (IFC, FBX, STEP…)
- Desktop app + conversion service
- No input size limit
- Everything in AEC Standard
- Bentley (.dgn) · Tekla
- Navisworks (.nwd, .nwc)
- SP3D & PDMS via Navisworks
Batch discounts from 3 machines · 30-day money-back guarantee · Regional pricing for Southeast Asia, South America and other Tier B markets.
FAQ
Why can't you just read Revit, Bentley or Tekla files directly?
.glzip, from which the Converter faithfully reconstructs the full model.
What is actually free, and what do I pay for?
Does any of my model data leave my network?
How does the Converter integrate into an automated pipeline?
POST /api/v1/convert from any language or platform to submit and track conversion jobs. The licensed desktop app covers manual, single-machine workflows.
Do you offer customization or enterprise deployment?
Latest from Our Engineering Blog
Deep dives into the technology inside the pipeline.
Material Merging & Texture Compression: The Hidden Performance Bottleneck in BIM Lightweighting
When a BIM model takes 30 seconds to load — or stutters at 12 FPS on a capable laptop — the geometry is rarely the whole story.
Read article →
Component Instancing: How Geometry Deduplication Unlocks GPU-Scale Rendering
A typical Revit model contains 50,000–200,000 components — most of them duplicates. Instancing turns that redundancy into draw-call savings.
Read article →
Geometry-Preserving Mesh Decimation: Inside 3D Expert's Lightweighting Engine
Industrial BIM models routinely contain 2–15 million triangles after export. How to cut that down without cutting corners.
Read article →Put Your First Model in the Browser Today
Install the free plugin, convert with the free desktop app, render with the free Loader — the whole pipeline costs nothing until your models outgrow 100 MB.
Free reader · Paid writer · Fully offline · Osaka, Japan