obj viewer
OBJ viewer online
Open OBJ files in your browser. Measure distances and holes, cut a section, check it is watertight, and see the print weight. No install, nothing uploaded.
How it works
- 1Drop an OBJ file in the box above. It opens in your browser; nothing is uploaded.
- 2Drag to orbit, scroll to zoom, right-drag to pan. Front, Top and Side square the camera up.
- 3Ruler gives the distance between two points. Face reads the size of a flat face or the diameter of a hole.
- 4Section cuts across the height, width or depth to show walls and hollows. Size draws the bounding box.
- 5The panel gives the size in millimeters, whether the mesh is watertight, and what it weighs in PLA.
Show a model on your site or repo
Paste the address of an OBJ file that is online, such as one in a GitHub repo, and copy what you need. The file stays where it is: each visitor's browser reads it from there.
The badge, as it shows in a READMEREADME badge (Markdown)
For a GitHub or GitLab README.
[](https://www.voloomcad.com/tools/obj-viewer?url=https%3A%2F%2Fexample.com%2Fpart.obj)
Embed on a site (HTML)
The viewer with measuring and section, inside your page.
<iframe src="https://www.voloomcad.com/embed/viewer?url=https%3A%2F%2Fexample.com%2Fpart.obj" width="100%" height="420" style="border:0" allow="fullscreen" loading="lazy" title="3D model"></iframe> <p><a href="https://www.voloomcad.com/tools/obj-viewer">OBJ viewer</a> by Voloom</p>
Link
https://www.voloomcad.com/tools/obj-viewer?url=https%3A%2F%2Fexample.com%2Fpart.obj
It works when the host lets other sites read the file: GitHub, GitLab and most direct download links do. Printables and Thingiverse do not.
About OBJ
OBJ (Wavefront OBJ). A plain-text mesh format from Wavefront. Common in 3D art, scans, and game assets. Materials live in a separate .mtl file.
Units: None in the file. Usually meters or centimeters from 3D apps. Up axis: Y. Opens in Blender, Maya, 3ds Max, Cinema 4D, and most slicers.
Questions
- Can I measure an OBJ file?
- Yes. Ruler measures between any two points, snapping to corners and edges, and splits the distance into X, Y and Z. Face reads a flat face's width and length, or a hole's diameter. Readouts are in millimeters: OBJ stores no units, so set the file units if it was saved in inches or meters.
- How do I check if an OBJ is watertight?
- Open it here. The panel counts open edges (the rims of holes), edges shared by more than two triangles, and separate parts. A watertight mesh has none of the first two. If it fails, the STL repair tool fixes most files.
- Can I show a model on my site or in a GitHub README?
- Yes, when the file is online somewhere that lets other pages read it, such as GitHub. Paste its address under "Show a model on your site or repo" for a README badge, an embed for your site, or a plain link. Printables and Thingiverse do not allow it, so download the file and drop it in here.
- Do I need to install anything to open OBJ?
- No. It runs in any modern browser, on desktop or phone.
- Is my file uploaded?
- No. The file is read and converted in your browser. It never reaches our servers.
- Is the OBJ viewer free?
- Yes, with no limit and no account.
- What else opens OBJ files?
- Blender, Maya, 3ds Max, Cinema 4D, and most slicers.
Related tools
All tools- Convert OBJ to STLFree OBJ to STL converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the STL.
- Convert OBJ to GLBFree OBJ to GLB converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the GLB.
- Convert STL to OBJFree STL to OBJ converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the OBJ.
- Convert FBX to OBJFree FBX to OBJ converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the OBJ.
- Convert PLY to OBJFree PLY to OBJ converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the OBJ.
- Convert STEP to OBJFree STEP to OBJ converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the OBJ.
- STL volume and weight calculatorUpload an STL, 3MF, or OBJ and get its volume, surface area, size, and the filament weight and cost for PLA, PETG, ABS, and more.
- Scale an STL onlineResize an STL by a percentage, to an exact length in millimeters, or from inches or meters to mm. Runs in your browser, then download the scaled file.