The following list and table show specifications and requirements for iOS application screenshots for iPad:
File Type: High-quality JPEG, TIFF, or PNG
Quality: 72dpi, RGB, flattened
Transparency: Not allowed
Required: At least one screenshot is required if your app will run on an iPad and up to four additional screenshots are permitted
Type
Dimensions (px)
Notes
Portrait
768 x 1004
Do not include status bar
Portrait
768 x 1024
Fullscreen
Portrait
1536 x 2008
Hi-res, do not include status bar
Portrait
1536 x 2048
Hi-res, fullscreen
Landscape
1024 x 748
Do not include status bar
Landscape
1024 x 768
Fullscreen
Landscape
2048 x 1496
Hi-res, do not include status bar
Landscape
2048 x 1536
Hi-res, fullscreen