Measure
Instantly calculate volume, surface area, and bounding box. Click a face to measure distance, diameter, wall thickness, and gaps.
No file conversion. No upload. Open your files locally.
No file uploads. No license required. Just double-click a file to open it directly on your computer.
- CAD
- .step.stp.iges.igs.brep.brp
- Mesh
- .stl.obj.ply.off.3mf.glb.gltf
- Offline
- No internet connection required. Open, measure, and inspect your files directly on your computer.
- Large files
- No file size limit. Open large assemblies directly from your disk.
- Mac & Linux
- Open, measure, inspect, and check pricing on macOS and Linux, just like on Windows.
Go beyond rotate and zoom. Review your designs.
Where most free viewers stop, Creallo Atlas goes further. Three design review features, without a paid CAD license.
Section
Drag a plane to see inside your model. Inspect hidden ribs and bosses, internal cavities, and interference between parts at a glance.
Inspect
Find thin walls, gaps, holes, flipped normals, and non-manifold edges directly on the model. See exactly where the issue is—not just in a list.
Don't send the file back over a single mesh error.
No need to reopen CAD. Sign in once to fix issues directly in Creallo Atlas.
Open edges (holes)Inverted shellsDegenerate triangles · duplicate facesNon-manifold edges
Extract the parts you need from complex assemblies.
Open a STEP assembly with original part names and colors intact. Toggle parts on or off, then export selected parts as STL.
Share a model with a link. No installation required.
Send a URL to purchasing, management, or customers. They can rotate the model and check its size in a browser—no design software needed.
See what the part costs as you review it.
Get reference prices for 3D printing, CNC, and vacuum casting based on the model geometry.
What sets Creallo Atlas apart from a free web viewer
File security, inspection, repair, and pricing—all in one place. Compare it with a viewer that only displays your model.
| Typical web viewer | Creallo Atlas | |
|---|---|---|
| File security | Upload required | Opens offline on your machine |
| File size | Size limits | No size limit |
| Measurement | Basic viewing | Distance · diameter · wall thickness · gap |
| Inspection | No section or thickness checks | Section view · thickness map · geometry checks |
| Repair | No repair tools | Fix mesh errors on the spot |
| Part extraction | View part tree only | Browse the part tree · export individual parts |
| Path to an order | Viewing only | Reference quote → order at Creallo |
Built to keep manufacturing moving.
Creallo Atlas removes the CAD license barrier from manufacturing collaboration. Built from real orders for robotics, IoT, and defense companies, it's a practical 3D viewer for manufacturing.
- Manufacturing projects
- 10K+
- Repeat order rate
- 80%
- Customer rating
- 4.9
- Production partners
- 100+
Figures from the Creallo manufacturing platform · ISO 9001 quality · ISO 27001 information security · ISO 14001 environmental management.
Frequently Asked Questions
What is Creallo Atlas?
A free 3D viewer for opening, measuring, and inspecting 3D files—no CAD software required. Works on Windows, macOS, and Linux.
Do I need an account?
No. Opening files, measuring, section views, thickness checks, mesh diagnosis, and STL export are available without signing in. A Creallo account is only required for automatic mesh repair, merging parts, and share links.
Is there a file size limit?
No limit when working locally on your machine. Share links support files up to 50 MB in .stl, .step, or .stp format.
Can I use it commercially?
Yes. You can use Atlas for commercial and business purposes.