SampleTestFiles

3 MB KML sample

A KML file of exactly 3,145,728 bytes. It is a valid Keyhole Markup Language file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 3 MB sample, test or dummy KML file.

Download

sample-kml-3mb.kml

3 MB3,145,728 bytes

Download 3 MB KML

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
application/vnd.google-earth.kml+xml
SHA-256
2ea8cc1ee75c90e571c3f1c6e3a951e3e02b409a95e20fc2f42587a310032b96
Delivery
Created in your browser from static generator assets (how it works).

What is in this file

A KML 2.2 document with a shared style and 13,442 placemarks, each a named point with a description. An XML comment before the closing tags brings the file to the exact size.

Placemarks13,442
KML version2.2
GeometryPoint
Network linksNone
EncodingUTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-kml-3mb.kml, exactly as they appear in the file.

00000000  3c 3f 78 6d 6c 20 76 65  72 73 69 6f 6e 3d 22 31 |<?xml version="1|
00000010  2e 30 22 20 65 6e 63 6f  64 69 6e 67 3d 22 55 54 |.0" encoding="UT|
00000020  46 2d 38 22 3f 3e 0a 3c  6b 6d 6c 20 78 6d 6c 6e |F-8"?>.<kml xmln|
00000030  73 3d 22 68 74 74 70 3a  2f 2f 77 77 77 2e 6f 70 |s="http://www.op|

Preview

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

Where 3 MB matters

A 3,145,728-byte file, 3 MB in the binary units that operating systems and upload limits use. It is useful wherever a form, an API gateway, a storage quota or a mail server is configured with a limit of about this size.

All 3 MB sample files

Use this file for

  • Finding the first upload limit in a new stack
  • Testing map imports and layer rendering
  • Checking conversion between KML, GPX and GeoJSON

Testing notes for KML

  • KML can pull in remote content through network links and icon URLs. An importer should not fetch them blindly. The samples here refer to nothing outside the file.
  • Longitude comes first. Reading the pair the other way round moves every point to a different part of the world.

KML format reference

Technical details

File namesample-kml-3mb.kml
FormatKML (Keyhole Markup Language)
Extension.kml
MIME typeapplication/vnd.google-earth.kml+xml
Size3,145,728 bytes (3 MB)
KindText
SHA-2562ea8cc1ee75c90e571c3f1c6e3a951e3e02b409a95e20fc2f42587a310032b96
Created2026-10-23
ValidationSee 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.
PreviewAvailable on this page
SourceGenerated in your browser by this site's generator; not copied from elsewhere
LicenceFree to use, modify and redistribute (terms)
CategoryGIS

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-kml-3mb.kml     # Linux
shasum -a 256 sample-kml-3mb.kml # macOS

On Windows, run Get-FileHash sample-kml-3mb.kml -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Other KML sizes

Other 3 MB files

Use cases

Guides

Questions about this file

Is this file exactly 3 MB?
Yes. It is 3,145,728 bytes, which is 3 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 3 MB KML file?
A KML 2.2 document with a shared style and 13,442 placemarks, each a named point with a description. An XML comment before the closing tags brings the file to the exact size.
What do the KML samples contain?
Placemarks near sixteen real cities on six continents: mostly points, with a path and a polygon in every ten, and two shared styles.