MergePNG.org is a free browser-based utility that combines multiple PNG images into a single file in seconds. Drag and drop your images, arrange them in any order, and download the merged result instantly - no signup, no watermark, and no upload limits. Everything runs locally in your browser so your images never leave your device. It supports adjustable canvas size, background color, spacing and alignment options, and works with other formats like JPG and WebP as inputs. Ideal for designers, developers and students who need to stitch screenshots, sprite sheets or long captures into one image for documentation, presentations or sharing.