Quick Panel Background Cropper

Mehchow

About this app

Create seamless Quick Panel backgrounds from one image for Samsung Good Lock QuickStar.

Quick Panel Background Cropper (QPBC) helps you turn a single image into matching PNG backgrounds for your Quick Panel. Instead of positioning each panel image by eye in QuickStar, calibrate your layout once, preview the connected composition, then export the images you need.

What you can do:
• Import a fully expanded Quick Panel screenshot
• Calibrate your layout with an adjustable snapping grid
• Choose one background image from your device
• Pan, zoom, and preview the connected composition
• Fine-tune individual Controls and Buttons
• Export high-quality PNGs ready for QuickStar

Choose the workflow that matches your layout:
• Default — Quickly set up the four supported Controls on a standard layout
• Advanced · Controls only — Adjust rearranged or resized Controls individually
• Advanced · Buttons only — Select, align, customize, and export Quick Panel Buttons
• Advanced · Controls + Buttons — Use one image continuously across selected Controls and Buttons in a single layout

Supported Controls:
• Button box
• Media player
• Brightness
• Volume

Buttons customization:
• Choose from 30 common built-in Button labels
• Add custom labels with your choice of icon
• Select and arrange multiple Buttons using the snapping grid
• Preview one continuous image across selected Buttons, or across Controls and Buttons together
• Adjust Button background image intensity
• Show or hide Button icons and labels
• Customize identifier intensity, position, icon color, and light or dark label style
• Export each Button as a separate 1024 × 1024 PNG

In Controls + Buttons mode, choose at least one supported Control and one Button, then calibrate them together within one shared area and grid. Your image placement stays connected across both panel families, while exports remain separate PNGs for applying in QuickStar.

Default, Advanced Controls, Advanced Buttons, and Advanced Controls + Buttons calibrations are stored separately, so you can return to each layout later.

Image processing is performed locally on your device. Exported images are applied manually through Samsung Good Lock QuickStar.

Important:
QPBC is designed for Samsung Galaxy devices running Android 16 and One UI 8.5 or later, including compatible Galaxy A, S, and Z series devices.

For the most accurate results, follow the built-in calibration guides and carefully match each rectangle to your Quick Panel screenshot.

What’s new

New: Add preset icons for custom Button labels.
Enhancement: Show icon next to the label for better clarity.
Build version: 30000033