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Your product screenshot will stand out in this mockup of an iPad sitting in a glossy, white bookshelf. To the left of the stage is an old fashioned, red lantern. To the right are a book and a blue, gold and white pamphlet. Below are more bookshelf sections. The stage is landscape oriented and 1024 x 768 px. It is at full frontal view.
Drag & drop not supported, but you can still upload via this input field: