---
title: "TexturePacker GUI: Hidden features"
description: "Documentation: Hidden features, not available from the UI"
canonical: "https://www.codeandweb.com/texturepacker/documentation/hidden-features"
product: "texturepacker"
date: "2023-07-31T00:00:00.000Z"
source: "html"
---
# Hidden features
Some features are tucked away to keep the interface clean and easy to use. They don’t fit into the UI without adding clutter and are only needed by a small number of users.
Good news: you can still use them by editing your .tps file (it’s a simple XML file) in any text editor.
> **Warning:** **Important note** TexturePacker does not automatically reload the .tps file. After editing, close the window and re-open the file to apply your changes.
## Ignoring files and directories
By default, TexturePacker adds all image files it finds in a folder. Sometimes you might want to exclude certain files — for example, .psd files.
Locate the following section in your .tps file:
```xml
ignoreFileList
```
This example ignores all files in a folder called **test**, and all files ending with **.psd**:
```xml
ignoreFileList
*.psd
*/test/*
```
Create one `...` for each entry. The expressions support Unix wildcards.
On the command line, use [`--ignore-files`](https://www.codeandweb.com/texturepacker/documentation/commandline/parameters.md#input-output) instead.
## Replacing file names and removing full path
You can replace parts of file names or remove directory prefixes by adjusting the following section in your .tps file.
Locate this section:
```xml
replaceList
```
Replace it with these lines to remove all path segments from the sprite names:
```xml
replaceList
.*/=
```
You can add multiple replacements — make a separate `...` for each.
The format is `REGEXP=STRING`. Replacements use Perl-compatible regular expressions.
On the command line, use [`--replace`](https://www.codeandweb.com/texturepacker/documentation/commandline/parameters.md#input-output) instead.
## Heuristic mask
The heuristic mask replaces a solid background color in a sprite with transparency. It works well in most cases.
To enable it, locate the following section in your .tps file:
```xml
heuristicMask
```
…and replace it with:
```xml
heuristicMask
```
On the command line, use [`--heuristic-mask`](https://www.codeandweb.com/texturepacker/documentation/commandline/parameters.md#sheet-layout) instead.
## In this section
- [Quickstart](https://www.codeandweb.com/texturepacker/documentation.md)
- [Installation & Licensing](https://www.codeandweb.com/texturepacker/documentation/installation-and-licensing.md)
- [Docker & CI](https://www.codeandweb.com/texturepacker/documentation/docker-ci.md)
- [Graphical User Interface](https://www.codeandweb.com/texturepacker/documentation/user-interface-overview.md)
- [Command line client](https://www.codeandweb.com/texturepacker/documentation/commandline.md)
- [Command line parameters](https://www.codeandweb.com/texturepacker/documentation/commandline/parameters.md)
- [Texture Settings](https://www.codeandweb.com/texturepacker/documentation/texture-settings.md)
- [Texture Compression](https://www.codeandweb.com/texturepacker/documentation/texture-compression.md)
- [Sprite Sheet Cutter](https://www.codeandweb.com/texturepacker/documentation/sprite-sheet-cutter.md)
- [Image Conversion](https://www.codeandweb.com/texturepacker/documentation/image-conversion.md)
- [Custom Exporters](https://www.codeandweb.com/texturepacker/documentation/custom-exporter.md)