25 KB GPX sample
A GPX file of exactly 25,600 bytes. It is a valid GPS Exchange Format file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 25 KB sample, test or dummy GPX file.
Download
sample-gpx-25kb.gpx
25 KB25,600 bytes
Download 25 KB GPXCreated 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/gpx+xml
- SHA-256
e015c0081a6eb2d6f9b7fc3c6b3a429771093c632ea40fae4c84120770e3b218- Delivery
- Created in your browser from static generator assets (how it works).
What is in this file
A GPX 1.1 file with metadata, one waypoint and a track of 250 points five seconds apart, each with elevation and a UTC timestamp. An XML comment before the closing tags brings the file to the exact size.
| Track points | 250 |
|---|---|
| Waypoints | 1 |
| GPX version | 1.1 |
| Interval | 5 seconds |
| Encoding | UTF-8 (ASCII characters only) |
How the file begins
The opening lines of sample-gpx-25kb.gpx, 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 67 70 78 20 76 65 72 73 |F-8"?>.<gpx vers|
00000030 69 6f 6e 3d 22 31 2e 31 22 20 63 72 65 61 74 6f |ion="1.1" creato|Preview
Shows the file contents.
Where 25 KB matters
A 25,600-byte file: the size of a small web image or a short document. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| TCP initial congestion window | About 14.6 KB (10 segments) | 25 KB needs at least two flights of packets on a new connection. |
| Base64 encoding | Adds 33 percent | A 25 KB file becomes about 34 KB inside JSON or an email. |
Use this file for
- Checking thumbnail and icon handling
- Verifying conversion to GeoJSON or KML
- Load-testing track rendering with many points
Testing notes for GPX
- Devices add heart rate, cadence and temperature in extension elements from other namespaces. A parser must skip what it does not recognise.
- GPX writes latitude before longitude, the opposite of GeoJSON and KML. Converters that copy the numbers across without swapping them put tracks in the wrong place.
Technical details
| File name | sample-gpx-25kb.gpx |
|---|---|
| Format | GPX (GPS Exchange Format) |
| Extension | .gpx |
| MIME type | application/gpx+xml |
| Size | 25,600 bytes (25 KB) |
| Kind | Text |
| SHA-256 | e015c0081a6eb2d6f9b7fc3c6b3a429771093c632ea40fae4c84120770e3b218 |
| 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-gpx-25kb.gpx # Linux
shasum -a 256 sample-gpx-25kb.gpx # macOSOn Windows, run Get-FileHash sample-gpx-25kb.gpx -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 25 KB?
- Yes. It is 25,600 bytes, which is 25 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 25 KB GPX file?
- A GPX 1.1 file with metadata, one waypoint and a track of 250 points five seconds apart, each with elevation and a UTC timestamp. An XML comment before the closing tags brings the file to the exact size.
- What do the GPX samples contain?
- One waypoint and one track with a single segment: a fictional walk that starts in Lisbon, with a point every five seconds, each carrying an elevation and a UTC time.