10 MB KML sample
A KML file of exactly 10,485,760 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 10 MB sample, test or dummy KML file.
Download
sample-kml-10mb.kml
10 MB10,485,760 bytes
Download 10 MB KMLCreated 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
11e5f1204bef71c35013dfb476d5c610e041f6de0693180694a4d585d40f7f37- 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 44,591 placemarks, each a named point with a description. An XML comment before the closing tags brings the file to the exact size.
| Placemarks | 44,591 |
|---|---|
| KML version | 2.2 |
| Geometry | Point |
| Network links | None |
| Encoding | UTF-8 (ASCII characters only) |
How the file begins
The opening lines of sample-kml-10mb.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 10 MB matters
A 10,485,760-byte file: over the default limits of PHP, API Gateway and Spring Boot requests. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| Amazon API Gateway | 10 MB payload | A 10 MB file in a multipart or base64 body is over the limit. |
| Spring Boot multipart | 10 MB per request by default (max-request-size) | Exceeded once form overhead is added. |
| PHP | 8 MB POST body by default (post_max_size) | Rejected before the script runs. |
| Amazon S3 multipart upload | 5 MiB minimum part size | This file splits into exactly two minimum-sized parts. |
| Email attachments | Commonly 20 to 25 MB per message | 10 MB fits, at about 13.3 MB once encoded. |
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.
Technical details
| File name | sample-kml-10mb.kml |
|---|---|
| Format | KML (Keyhole Markup Language) |
| Extension | .kml |
| MIME type | application/vnd.google-earth.kml+xml |
| Size | 10,485,760 bytes (10 MB) |
| Kind | Text |
| SHA-256 | 11e5f1204bef71c35013dfb476d5c610e041f6de0693180694a4d585d40f7f37 |
| 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 | GIS |
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-10mb.kml # Linux
shasum -a 256 sample-kml-10mb.kml # macOSOn Windows, run Get-FileHash sample-kml-10mb.kml -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 10 MB?
- Yes. It is 10,485,760 bytes, which is 10 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 10 MB KML file?
- A KML 2.2 document with a shared style and 44,591 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.