Collage Composer

A browser-based collage maker. Upload any number of images, arrange them on one canvas, and export the result as a single image — no server, no uploads, everything runs client-side.

Features

• Bulk upload via drag-and-drop or file picker — JPG, PNG, WebP, GIF, BMP, AVIF, SVG, and more (anything the browser can decode).
• Two layout modes
  • Evenly aligned grid — auto-tiled grid with adjustable columns, gap, and fit mode (cover/contain/stretch).
  • Free-form scatter — drag to move, drag the corner handle to resize, adjust rotation, reorder z-index.
• Canvas sizing — pick a standard aspect ratio, or "Match first image" to size the canvas to the resolution/aspect ratio of the first image you upload so everything else lines up against it.
• Export — PNG (with transparency), JPEG, or WebP, at up to 3× the canvas resolution.

Getting started

npm install
npm run dev

Then open the printed local URL. npm run build produces a static production build in dist/ that can be hosted anywhere (no backend required).