Getting started

From an empty board to a laid-out set of reference photos.

1. Start a board

   Click Start a new board on the landing page. It opens straight into the editor — no upload step, no sign-in required.

2. Add photos

   Use File → Add photos… to pick JPEG, PNG, WebP, GIF, AVIF, BMP, or TIFF files, or just drag them straight onto the board from your file manager. You can also paste an image directly onto the canvas (Ctrl/Cmd + V) if you've copied one from elsewhere.

3. Arrange them

   Drag a photo to move it, drag a corner handle to resize it, and drag the rotate handle to turn it. Pan the board by holding Space and dragging; zoom with the scroll wheel, a two-finger trackpad scroll, or a pinch gesture.

4. Select more than one at a time

   Drag a marquee across empty board space to select everything inside it, or hold Shift while clicking to add individual items to the selection. See Selection, groups, and layers for grouping and the layers panel.

5. Keep a backup

   Click File → Download a backup any time to save the whole board — every photo, note, and its layout — as a single .cosref file you can reopen later. See Backup and restore.

Your photos never leave this browser. There's no account and nothing is uploaded, unless you explicitly export a backup yourself.