OBJ Viewer: Online & Free

Open, inspect geometry, structure, and colors, measure distances and volume, repair, and resize OBJ files for 3D printing.

Trusted by 10,000+ engineers
Video coming soon

Watch our quick tutorial or read:

Which OBJ Viewer Is Best for You?

Compare popular OBJ viewers to find the best one for your 3D workflow.

MeshInspector
MeshInspector
Other STL Readers
Perfomance
Ultra-fast (GPU acceleration)
High
Slow
Batch Import
Unlimited
Unlimited
Single file
File Limits
Unlimited
Unlimited
~100 MB
Measurement Tools
Advanced
Advanced
Limited
Metadata Support
Full
Full
Not supported
Scaling
Advanced
Advanced
Not supported
3D Editor
Advanced
Advanced
Not supported
Screenshots
Advanced
Advanced
Limited
Supported Files
STL (ASCII/Binary), OBJ, PLY, GLTF
STL (ASCII/Binary), OBJ, PLY, GLTF
STL (Binary)
Export
Multiple formats
Multiple formats
Not supported
Security & Privacy
Corporate security + Local storage
SSL + Auto-delete
Server-side storage
Cross-Platform
Windows, macOS, Linux
All devices
Web only, poor mobile UX
Suitable for
Professional & industrial use
Quick viewing & sharing
Not recommended

Ready to get started with MeshInspector?

Join thousands of engineers who trust MeshInspector to view and inspect their 3D files. Start exploring your models today with no limits and professional‑grade visualization.

How to Open OBJ Files on Windows, Mac & Linux

3D professionals often look for a reliable program to read OBJ files, i.e., one that loads models quickly and handles large meshes, working consistently across different operating systems. The MeshInspector program for OBJ files is a clear match here, as it provides a free and cross-platform solution for opening, viewing, and analyzing OBJ files, both online and offline (when downloaded). As such it processes objects with equal stability, giving users full control over geometry, its scale, and overall quality.

1

Open an OBJ to View It

Go to the ’Home’ tab and click ’Open Files.’ Select your OBJ file to load it into the MeshInspector program. Once chosen, the program imports the geometry and prepares it for display, no matter how many polygons your mesh contains.

2

Selecting an OBJ File

Browse to the directory where your OBJ file is stored. Double-click it or confirm the selection with ’Upload.’ We can accept OBJ files both as standalone meshes and as complete archived project folders, including their relevant assets packaged in a ZIP folder.

3

Viewing an OBJ File

Let’s assume we have uploaded an entire ZIP package containing the OBJ mesh and its supporting elements. After import, the full project structure appears in the Scene Tree. You can now freely explore the OBJ, e.g., rotate the view by dragging with the left mouse button or using a single-finger touchpad gesture. Pan with the right mouse button or two-finger movement. Zoom with the mouse wheel or a pinch gesture. Tilt the perspective by holding Ctrl while dragging with the left button.

4

Checking the Size of an OBJ

To review the dimensions of your OBJ model, open the ’Inspect’ tab and enable ‘Bounding Box’ with the mesh selected in the Scene Tree. MeshInspector will display the overall size of the OBJ model, helping one verify scale and proportions before further processing.

5

Changing the OBJ Size

If you need to resize your OBJ model for some reason, use the Scale slider in the ’Transform’ section of the lower-left panel. Select the scaling ratio. After that, apply the change by clicking the checkmark icon. The OBJ mesh will be updated instantly, including its bounding box values as well as volume.

6

Inspecting OBJ Mesh Quality

Mesh files represent polygonal geometry. As such, they might contain holes, flipped normals, disconnected islands, or other defects. To examine mesh quality quickly and with ease, open ‘Mesh Healer’ under ‘Mesh Repair.’ This tool analyzes your OBJ and highlights potential issues.

7

Fixing Issues in OBJs

Use the ’Local Repair’ option to check for specific defects, such as holes, non-manifold edges, or self-intersections. Activate the options you need and run the repair to achieve the level of quality you require. Also, the ’Auto Repair’ option will attempt to simply rebuild a problematic mesh.

8

Distance Measurements in OBJ Models

To measure distances, go to ’Inspect’ and enable ’Measure Distance.’ Then click your points on the model. MeshInspector calculates the exact 3D distance and also shows X, Y, and Z projections. This might be useful for quick dimensional checks and validation.

Open-Source OBJ Viewer for Developers

Integrate real-time 3D visualization, mesh analysis, and measurement tools directly into your applications with MeshLib SDK.

Be the first to write a review

{{ reviewsTotal }}{{ options.labels.singularReviewCountLabel }}
{{ reviewsTotal }}{{ options.labels.pluralReviewCountLabel }}
{{ options.labels.newReviewButton }}
{{ userData.canReview.message }}

Try Meshinspector for free.