> ## Documentation Index
> Fetch the complete documentation index at: https://rendzo.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Clean

> Remove GPS points or waypoints from selected areas

The Clean tool removes GPS points and/or waypoints from specific geographic areas using a rectangular selection.

## How It Works

1. Select a track in the [File Tree](/docs/app/file-tree)
2. Open the Clean tool
3. Drag on the map to create a rectangular selection area
4. Choose what to remove and where
5. Click **Delete** to apply

## Selection Options

### What to Remove

* **GPS Points** - Remove track points within/outside the selection
* **Waypoints** - Remove [waypoints](/docs/tools/waypoints) within/outside the selection
* **Both** - Remove both GPS points and waypoints

### Where to Remove

* **Inside selection** - Remove items within the rectangle
* **Outside selection** - Remove items outside the rectangle (keep only what's inside)

## Use Cases

### Removing GPS Errors

If your track has erroneous points (e.g., GPS drift at the start while waiting for satellite lock), draw a selection around the bad data and delete it.

### Isolating a Section

To keep only a specific portion of your track, draw a selection around the area you want to keep and delete everything **outside** the selection.

### Cleaning Up Waypoints

Remove waypoints from areas that are no longer relevant to your route without affecting the track itself.

<Tip>
  For more precise track trimming based on distance or time, use the [Crop & Split](/docs/tools/crop-split) tool instead.
</Tip>