A simple tool that allows you to quickly grab sprites that are in a Packed Texture format, with (at least) a 1px border. Works well with formats similar to this: https://www.spriters-resource.com/pc_computer/sonicmania/sheet/95304/

How to Use:

1. Drag and Drop a PNG, GIF, or other image file into the window to load it.
2. Use the color box to set the Border Color, or simply SHIFT + CLICK an area on the image to select the color (like an eye-dropper tool).
3. Click on one of the sprites. and information about its x/y position, and  height/width are displayed.
4. From there, you can press CTRL + X to copy this position text info to the clipboard.
5. Or press CTRL + C to copy the sprite image to the clipboard.

There's also a handy tool here that shows your chosen color in RGB, Hexadecimal, and Integer format.

A sample image is provided to quickly understand how this software works. You can also see how it works with the GIF animation on the right here.

Notes:

I originally developed this tool to make working with Sonic Mania's sprite system a bit easier, as the current mod tools are somewhat cumbersome.

Also fixed a minor bug with the Sound FX. If you downloaded this program before 10/3/2020, you should download the new fix.

EDIT:

An update with Windows Defender seems to be classifying this tool as malware now. This is a false-positive, as there is no malicious code in this software. It's a pretty simple app that just loads PNG images, and can send text or PNG data to the clipboard. Only a few Anti-Virus programs are falsely flagging this program - most of them are reporting that it's fine.

For now, you can add the EXE file to your virus software's "exclusion" list.

Thanks to ZachToonz for letting me know about this issue.