1 KB OBJ sample file

An OBJ file of exactly 1,024 bytes. It is a valid Wavefront OBJ 3D model file, generated for this site and checked with an independent parser.

sample-obj-1kb.obj

1 KB1,024 bytes

Download 1 KB OBJ

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Type: model/obj
SHA-256: 6c887401c81b6e7f9fbf8b91b2f3942b15b62089c8339aa15a312e15b3667d18
Direct URL: https://sampletestfiles.com/downloads/obj/sample-obj-1kb.obj

What is in this file

A height-field mesh with 27 vertices and 32 triangular faces, written as "v" and "f" statements with no materials. Comment lines at the end bring the file to the exact size.

Vertices	27
Faces	32 triangles
Objects	1 (terrain)
Normals and UVs	None
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-obj-1kb.obj, exactly as they appear in the file.

# SampleTestFiles sample OBJ file (1 KB)
# A triangulated height-field surface, 3 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 0.000 0.6341 0.500
v 0.500 0.7291 0.500
v 1.000 0.7768 0.500
f 1 4 2
f 2 4 5
f 2 5 3
f 3 5 6
v 0.000 1.2040 1.000

Preview

Shows the file contents.

Where 1 KB matters

The smallest practical test file: 1,024 bytes, small enough to travel in a single network packet. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Ethernet	1,500 bytes (typical MTU)	A 1 KB payload fits in one packet with its headers.
Browser cookies	4,096 bytes per cookie	1 KB is well inside the limit; the 5 KB sample is over it.

All 1 KB sample files

Use this file for

Smoke tests in CI that must run in milliseconds
Testing 3D model upload and preview
Checking mesh importers and converters

Testing notes for OBJ

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.
OBJ has no unit of measurement, so the same file can appear at wildly different scales in different tools.

OBJ format reference

Technical details

File name	sample-obj-1kb.obj
Format	OBJ (Wavefront OBJ 3D model)
Extension	.obj
MIME type	model/obj
Size	1,024 bytes (1 KB)
Kind	Text
SHA-256	6c887401c81b6e7f9fbf8b91b2f3942b15b62089c8339aa15a312e15b3667d18
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-1kb.obj 'https://sampletestfiles.com/downloads/obj/sample-obj-1kb.obj'
sha256sum sample-obj-1kb.obj     # Linux
shasum -a 256 sample-obj-1kb.obj # macOS

On Windows, run Get-FileHash sample-obj-1kb.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 1 KB?: Yes. It is 1,024 bytes, which is 1 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 1 KB OBJ file?: A height-field mesh with 27 vertices and 32 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.

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