Opening files
You can open files that were created in Corel Painter or in other applications. For example, you can open a file from another graphics application and use Corel Painter to add brushstrokes, tints, or paper textures. You can also easily switch between multiple open documents by using keyboard shortcuts.
Corel Painter lets you open the following file formats:
• CMYK TIF (TIF) — Because Corel Painter works with RGB colors, the CMYK TIF files that you open or import in the application are converted to an RGB color profile.
• Adobe Photoshop formats (PSD) — Corel Painter preserves layers, layer masks, alpha channels, and composite methods. Layer effects and adjustment layers are not supported and should be merged or flattened in Adobe Photoshop.
• QuickTime (MOV), Video for Windows (AVI), and numbered files. For more information, see Opening a Corel Painter movie or Importing and exporting numbered files.
Corel Painter does not support LZW compressed TIFF file format. Only uncompressed TIFF files can be opened in Corel Painter.
To open a document
For each image, Corel Painter lists the dimensions (in pixels), file size, and file format. Files saved in Corel Painter include thumbnails for browsing.
The File menu also offers you a shortcut to previously opened documents. You can find your file in the recently opened files list by choosing File 
Recent, and clicking the filename to open the file.
To switch between open documents
To browse for a document (macOS)