200 KB OBJ sample

An OBJ file of exactly 204,800 bytes. It is a valid Wavefront OBJ 3D model file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 200 KB sample, test or dummy OBJ file.

sample-obj-200kb.obj

200 KB204,800 bytes

Download 200 KB OBJ

Created in your browser in a few seconds, then checked against the SHA-256 checksum. The file is not uploaded anywhere. No sign-up.

Type: model/obj
SHA-256: 47466ffa9b2ed5e1963153ec324db05d8da1c222a385895c22854cec1dbff5f2
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

One object, "terrain": a height field 47 vertices wide and 78 rows deep (3,666 vertices, 7,176 triangles), written as v and f statements. Comment lines at the end bring the file to the exact size.

Vertices	3,666
Triangles	7,176
Objects	1
Materials	None
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-obj-200kb.obj, exactly as they appear in the file.

00000000  23 20 53 61 6d 70 6c 65  54 65 73 74 46 69 6c 65 |# SampleTestFile|
00000010  73 20 73 61 6d 70 6c 65  20 4f 42 4a 20 66 69 6c |s sample OBJ fil|
00000020  65 20 28 32 30 30 20 4b  42 29 0a 23 20 41 20 74 |e (200 KB).# A t|
00000030  72 69 61 6e 67 75 6c 61  74 65 64 20 68 65 69 67 |riangulated heig|

Preview

Creates the file in your browser and shows the first 64 KB of it.

Where 200 KB matters

A 204,800-byte file: twice the default body limit of most API frameworks, and a common cap for photo and signature uploads on application forms. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Express body parsers	100 KB by default	Rejected with 413 unless the limit is raised.
Amazon DynamoDB items	400 KB per item	200 KB fits, even after base64 encoding takes it to about 273 KB.
Azure Service Bus, Standard tier	256 KB per message	Fits as raw bytes, but not once base64-encoded.

All 200 KB sample files

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.

OBJ format reference

Technical details

File name	sample-obj-200kb.obj
Format	OBJ (Wavefront OBJ 3D model)
Extension	.obj
MIME type	model/obj
Size	204,800 bytes (200 KB)
Kind	Text
SHA-256	47466ffa9b2ed5e1963153ec324db05d8da1c222a385895c22854cec1dbff5f2
Created	2026-10-23
Validation	See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility.
Preview	Available on this page
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	3D Models

Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.

sha256sum sample-obj-200kb.obj     # Linux
shasum -a 256 sample-obj-200kb.obj # macOS

On Windows, run Get-FileHash sample-obj-200kb.obj -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Questions about this file

Is this file exactly 200 KB?: Yes. It is 204,800 bytes, which is 200 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 200 KB OBJ file?: One object, "terrain": a height field 47 vertices wide and 78 rows deep (3,666 vertices, 7,176 triangles), written as v and f statements. 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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