100 KB OBJ sample file
An OBJ file of exactly 102,400 bytes. It is a valid Wavefront OBJ 3D model file, generated for this site and checked with an independent parser.
Download
sample-obj-100kb.obj
100 KB102,400 bytes
Download 100 KB OBJDirect download. No sign-up and no waiting.
- Type
- model/obj
- SHA-256
bdd91dc64f0f44519a86ccdff9d9ee47fe93e853920ffc9c90ad387758ab9ff5- Direct URL
https://sampletestfiles.com/downloads/obj/sample-obj-100kb.obj
What is in this file
A height-field mesh with 1,944 vertices and 3,710 triangular faces, written as "v" and "f" statements with no materials. Comment lines at the end bring the file to the exact size.
| Vertices | 1,944 |
|---|---|
| Faces | 3,710 triangles |
| Objects | 1 (terrain) |
| Normals and UVs | None |
| Encoding | UTF-8 (ASCII characters only) |
How the file begins
The opening lines of sample-obj-100kb.obj, exactly as they appear in the file.
# SampleTestFiles sample OBJ file (100 KB)
# A triangulated height-field surface, 36 vertices wide.
o terrain
v 0.000 0.0000 0.000
v 0.500 0.1197 0.000
v 1.000 0.2377 0.000
v 1.500 0.3523 0.000
v 2.000 0.4618 0.000
v 2.500 0.5646 0.000
v 3.000 0.6594 0.000
v 3.500 0.7446 0.000
v 4.000 0.8192 0.000
v 4.500 0.8820 0.000
v 5.000 0.9320 0.000Preview
Shows the first 64 KB of the file.
Where 100 KB matters
A 102,400-byte file that sits exactly on the default request-body limit of Express. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| Express body parsers | 100 KB (102,400 bytes) by default | A request body of exactly this size passes; anything larger returns 413 Payload Too Large. |
| Gmail message clipping | About 102 KB of HTML | Longer messages are truncated behind a "view entire message" link. |
| Amazon DynamoDB items | 400 KB per item | 100 KB fits; the 500 KB sample does not. |
Use this file for
- Checking email size handling
- Load-testing viewers with large meshes
- Testing 3D model upload and preview
Testing notes for OBJ
- OBJ has no unit of measurement, so the same file can appear at wildly different scales in different tools.
- Face indices are one-based and can be negative, meaning relative to the end of the vertex list; importers written for zero-based arrays are off by one.
Technical details
| File name | sample-obj-100kb.obj |
|---|---|
| Format | OBJ (Wavefront OBJ 3D model) |
| Extension | .obj |
| MIME type | model/obj |
| Size | 102,400 bytes (100 KB) |
| Kind | Text |
| SHA-256 | bdd91dc64f0f44519a86ccdff9d9ee47fe93e853920ffc9c90ad387758ab9ff5 |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Available on this page |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | 3D Models |
Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Download from the command line and verify
Fetch the file with curl, then compare its checksum with the SHA-256 value above.
curl -o sample-obj-100kb.obj 'https://sampletestfiles.com/downloads/obj/sample-obj-100kb.obj'
sha256sum sample-obj-100kb.obj # Linux
shasum -a 256 sample-obj-100kb.obj # macOSOn Windows, run Get-FileHash sample-obj-100kb.obj -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.
Related files
Questions about this file
- Is this file exactly 100 KB?
- Yes. It is 102,400 bytes, which is 100 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 100 KB OBJ file?
- A height-field mesh with 1,944 vertices and 3,710 triangular faces, written as "v" and "f" statements with no materials. Comment lines at the end bring the file to the exact size.
- What does the sample model look like?
- A gently rolling surface, like a patch of terrain, built from triangles. It has no materials or textures.