How to Resample and Simplify Your GPX File

By Roy Lachica on July 04, 2026. Last updated July 4, 2026.

GPX files can sometimes be unnecessarily large and complex, containing thousands of track points. This can make them slow to load and process, and some older devices may struggle with very large files. The Resample/Simplify GPX feature in GpxFix allows you to reduce the number of points in your file while preserving the overall shape of your route.

What is Resampling?

Resampling (or simplifying) is the process of reducing the number of data points in a track. GpxFix does this intelligently by removing points that are redundant or don't contribute much to the overall shape of the route. For example, on a long straight road, you don't need a point every second; a few points spread out over a longer distance will suffice.

Why Resample Your GPX File?

Simplifying your GPX file has several benefits:

Smaller File Size: Fewer points mean a smaller file, which is easier to store and share.
Faster Processing: Tools and devices can load and process smaller files more quickly.
Improved Compatibility: Some older GPS devices and software have limits on the number of points a track can contain. Resampling can make your file compatible with these devices.
Smoother Tracks: By removing small, erratic movements (GPS jitter), resampling can result in a smoother, more visually appealing track.

How to Use the Resample/Simplify Feature

In the GpxFix toolbox, you'll find the 'Resample' option. This tool allows you to control the level of simplification:

Select a tolerance level: You can choose how much you want to simplify the track. A small tolerance will remove only the most redundant points, while a larger tolerance will result in a more simplified track and a smaller file size.

GpxFix provides a preview of the simplified track, so you can see the effect of your changes before you apply them. This allows you to find the right balance between file size and track accuracy for your needs.

What's the Difference Between Resample and Strip/Minify?

It's helpful to understand the distinction between resampling and another common optimization technique: stripping or minifying.

Resample/Simplify: This process reduces the number of track points in your file. It intelligently removes points to simplify the path's geometry, making the track data itself less complex. The main goal is to reduce the point count while preserving the overall shape of the route.
Strip/Minify: This process removes unnecessary data fields from the GPX file, such as timestamps, elevation, heart rate, or other sensor data. The number of track points stays the same, but the file becomes smaller because there is less information stored for each point. GpxFix offers this under the 'Strip/Minify' tool.

You can use both techniques together for maximum optimization. For example, you could first resample the track to reduce the number of points, and then strip out the timestamps to make the file even smaller.

Ready to Optimize Your GPX Files?

Upload your GPX file and use the 'Resample' or 'Strip/Minify' features to make your tracks smaller, faster, and more compatible.