Files and formats

3 topics from the in-app manual.

The .wci project: why to keep your master in it

The layer tree: names, visibility, locking, opacity, groups — everything

Vector shapes: nodes, bezier handles, dash styles, end arrows, tapered tails — still editable after reopening

Text font, size and letter spacing; retype any time

Masks (with feather and invert), the current selection, canvas size and DPI / centimetres

Autosave: one snapshot every 3 minutes by default, 10 kept — a crash costs you minutes, not hours

Undo history: Ctrl+Z will not step back after a reopen

Layer blend modes

Everything except undo history and blend modes comes back exactly as you left it.

Autosave snapshots sit right below "recent files" in the File menu — click one to resume

Both PSD and PSB; 8-bit and 16-bit RGB and CMYK

Common compression schemes (RLE, Zip and more) all read

Layer names, visibility, opacity, groups and layer masks come through intact

Text layers convert to native text you can keep editing

16-bit files are handled as 8-bit

Blend modes cannot be kept; they are baked into the pixels

Smart objects keep only their current appearance; adjustment layers become plain layers

Shape layers lose their vector paths — pixels only

Greyscale, Lab and indexed files report "currently supported: 8/16-bit RGB or CMYK" — convert to RGB in Photoshop first.

More than 32767 layers will not open; single layers above 30000 px are skipped

PSD 1.0, 8-bit RGB, uncompressed, plus a composite preview — files run large

Every vector shape (annotations, arrows, text) becomes pixels — nodes and tapered tails are gone

If the project has adjustment or portrait layers, a "PSD export notice" appears and everything flattens into one layer

The recipient uses Photoshop or another app and needs layers

You are done editing and just delivering

You will keep editing → save .wci

It is just for posting → PNG / JPG is far smaller; a PSD adds nothing

Before handing over a PSD, remember: vectors are pixels now, and the recipient cannot edit your arrows either.

If they need to tweak things, export those parts as separate PNGs for them to stack