Windows application with user friendly GUI (Graphical User Interface) for creating background images. This tool is a replacement of BitmapCutter.exe which is command line application.
Application is present in newer packages of Graphical Installer (the same version): Graphical Installer for NSIS and Graphical Installer for Inno Setup.

Tip: How to create background image for Inno Setup?
See this technical section how to properly create background images for Inno Setup.

Usage:

• Start the application if it is not running - by clicking it's icon in Start menu or directly by launching it. (The application is located in Graphical Installer installation directory - {Inno Setup 6}\Graphical Installer). Main window opens.
  
  

• Step #1: Select file you want to process by clicking the Browse... button. This parameter represents picture from which the inner image will be created. This picture must be EXACTLY 690 pixels wide and 496 pixels high.
  
  Supported image formats (extensions):
  
  

  Extension	Description
  .bmp	Windows Bitmap up to 24bpp
  .jpg .jpeg	JPEG File Interchange Format
  .gif	Graphics Interchange Format
  .png	Portable Network Graphics
  .tif .tiff	Tagged Image File Format

  Tip: Since version 6.1.2 there is a new option: you can paste the image data (or Base64 data) directly from Clipboard (using the Ctrl+V). Usage is simple:
  - Prepare your picture in any editor (MS Paint, Gimp, Photoshop, etc.)
  - Copy the image data to Clipboard
  - Paste the image data (Ctrl + V) into BitmapCutterGUI (into box for file input).

  The image data in Clipboard must meet the criteria mentioned above! (dimensions and formats). This is how the selected image data looks in MS Paint:
  
  
  
  Base64 data is also supported. Base64 data looks like this: data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEBLAEsAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQ...
  Base64 is as plain text, simply copy it to Clipboard and paste (Ctrl) into the box mentioned above.

• Step #2: Select the output type: either Graphical Installer for NSIS or Graphical Installer for Inno Setup.
  
  

  • - If you wish to create background picture for Graphical Installer for NSIS select option 'Create background picture for Graphical Installer for NSIS'
    This option simulates command "-c" from BitmapCutter.exe
  • 
    
    
  • - For creating RTL (Right to Left) image check the 'Create RTL' checkbox next to this option. RTL images are used in some UNICODE languages like Hebrew.
    This option simulates command "-r" from BitmapCutter.exe
  • 
    
    
  • - If you wish to create background picture for Graphical Installer for Inno Setup select option 'Create background picture for Graphical Installer for Inno Setup'
    This option simulates command "-i" from BitmapCutter.exe
  • 
    
    
  • - For creating RTL (Right to Left) image check the 'Create RTL' checkbox next to this option. RTL images are used in some UNICODE languages like Hebrew.
    This option simulates command "-u" from BitmapCutter.exe
  
  
  You can click the Preview button to show preview of your future installer. Preview is based on the type you choose (NSIS/Inno Setup, RTL or not).
  Preview of installer is shown in a new window - you can close it with the ESC key.
  
  

• Step #3: Generate output image by clicking the Generate button. The resulting images are stored in the same directory as input image.
  
  If some error occurs during processing the image an message box is shown and error log is written to file.
  

  Tip:
  If you use smaller (larger) image than 690x496 pixels the resulting image will be stretched (narrowed). Always use picture 690 pixels wide and 496 pixels high.
  If your desired image does not meet some criteria a warning message is shown in application window.

• Click Close button to exit the application.