Backgrounds¶

A background is the quickest way to change what a diagram feels like. The same boxes and arrows read very differently on a chalkboard than on graph paper.

Choosing one¶

Page ▸ Background… (Cmd+Alt+B), or the Page Background button near the bottom of the tool palette.

The sheet has two tabs, stacked the way they're drawn: Grid sits on top of Image & Color. It opens on Grid, which is covered in Grid. Click Image & Color for everything on this page.

Click a tile to select it, then Done. Or double-click a tile to apply it straight away. Cancel leaves things alone. The sheet opens showing one row of backgrounds: scroll for the rest, or drag the sheet's edge taller to see more at once. The sheet remembers the size you leave it at.

The Preview on the right shows the page as it will look, with your grid drawn over the background. It's there on both tabs.

Backgrounds and the grid¶

Choosing a background never touches your grid. If you pick Notebook and the grid's still on, you'll see both in the preview, and it'll probably look like a mistake. Go to the Grid tab and choose No Grid, or keep both if that's what you're after.

Done changes the background and the grid together, and one Undo puts both back.

What ships with the app¶

Two solids — Blank White and Blank Black — and ten images:

Paper with Coffee Stain · Chalkboard · Whiteboard · Napkin · Notebook · Legal Notebook · Vanilla Paper · Handmade Paper · Fiber Paper · Watercolor Paper

There's also None — the box with a slash through it — if you want nothing at all behind your work.

Handmade Paper, Fiber Paper and Watercolor Paper are plain white on purpose. Tick Tint with a color and they become paper of whatever colour you like: cream, kraft brown, pale blue, anything.

There are no graph paper or dotted backgrounds, because the grid does that job now, and you can change its spacing and style.

Adjusting an image background¶

Pick an image background and its options appear under Background options.

• Layout — Actual Size, Tile, or Stretch to Size. Most of the paper textures tile; the ones that are a single sheet (coffee-stained paper, napkin, both notebooks) sit at actual size.
• Tint — tick Tint with a color and choose a colour to wash over the background.
• Tint opacity — how strong that wash is. It starts at 25%, which shifts the colour without hiding the texture. It does nothing until Tint with a color is ticked.
• Placement — normally the image starts at the page origin. Tick Set position and size to say where it starts (X, Y) and, for Stretch to Size, how big it is (W, H).
• Set to — two shortcuts that fill those four numbers in and tick the box for you. Fit to Artwork uses the area your shapes cover. Whole Page uses the page.

Placement matters most when you're stretching a background: it's the size the image is stretched to.

Solid colours¶

Pick Blank White or Blank Black and you get a Color control — which accepts any colour, not just white or black. A pale cream or a soft grey often reads better on screen than pure white.

Your own background image¶

Import Image… in the chooser takes a PNG, JPEG, TIFF, GIF, HEIC, WebP or BMP image (the same formats and limits as Import Image) and embeds it in the document, so the file travels with your diagram. Once imported, it gets the same Layout, Tint, Opacity and Reference Frame controls as the built-ins.

The previously imported image stays available in the chooser as Current / Imported Background, so you can switch away and come back.

Backgrounds and export¶

When you export or copy as an image you get to decide whether the background comes along — there's an Include Page Background checkbox in the Export panel, and a separate Copy as Image without Page Background command in the Edit menu.

Handy when a chalkboard looks great in a presentation but you need a transparent PNG to drop into a document.