Show HN: MergeImage – Merge and stitch images locally in the browser

MergeImage is a browser-based tool that allows users to merge and stitch multiple image files (PNG, JPEG, WebP) locally without uploading them to a server, keeping all data private on the device. The tool supports up to 30 images with customizable layouts (horizontal, vertical, grid, or smart stitch), sizing options, spacing, and alignment controls, allowing users to download the merged result in their preferred format. It's designed for practical tasks like combining before-and-after views, screenshots, scans, or mood boards without requiring an account.