Merge PNG Files Online Free

MergePNG is a free browser-based tool that merges multiple PNG images into a single file in seconds. It runs entirely client-side, so your images never leave your device: no uploads, no waiting queues, and no watermarking. The drag-and-drop interface accepts PNG, JPG, and WebP files, lets you reorder layers before merging, and outputs a clean combined PNG at full original quality. MergePNG handles transparency correctly, preserves alpha channels between layers, and supports batch jobs for teams that need to combine dozens of screenshots, product shots, or design crops at once. Common use cases include stitching long screenshots for documentation, assembling pixel-art sprite sheets, and combining mockups for design reviews. Completely free with no sign-up required, works on any modern browser including mobile.