Document Setup — Posters and Portfolio Pages
Set up margins at document creation. Build your column and row grid once the page is visible — so you can judge what you're actually building before committing to it.
Why setup matters
InDesign document settings — page size, margins, bleed — are the spatial parameters everything else is built within. Get these right before placing anything. The difference between the poster and the portfolio pages is not just size: they are different spatial arguments at different scales for different viewing contexts, and the setup reflects that.
Columns are not set at document creation. Once the blank page is visible, you can see the actual cell size a proposed grid would produce and judge whether those proportions serve the content you're placing. Setting columns in the dialog box before the page is visible is guessing. Setting them once you can see the page is a spatial decision.
The poster document
| Setting | Value | Notes |
|---|---|---|
| Width × Height | 36" × 24" (landscape) | The required Assignment 05 output size. Enter width and height directly — orientation sets itself. |
| Number of pages | 1 | A poster is a single sheet. |
| Facing pages | Off | Facing pages are for multi-page documents. Single-sheet posters do not need this. |
| Columns | 1 — leave at default | Do not set columns here. Build the grid visually once the page is open. |
| Margins | 0.75"–1" on all sides | The primary content boundary. Full-bleed images extend to or past the page edge and do not need to respect margins. All text and compositional elements should. |
| Bleed | 0.125" | If any image or fill is intended to print to the physical edge of the sheet, extend it 0.125" beyond the page boundary. If nothing bleeds to the edge, bleed can be left at 0. |
| Color mode | RGB or CMYK | Confirm with the output device. Large-format inkjet printers for pin-up typically accept RGB. Confirm before submitting to print. |
The portfolio project pages document
| Setting | Value | Notes |
|---|---|---|
| Page size options | 8" × 10" (landscape) or 8" × 8" (square) | Both are sized for full-bleed printing. The landscape format suits horizontal compositions and wide site images; the square format suits balanced, symmetrical layouts and works well for square diagram content. Choose one and commit — mixing page formats within a portfolio creates production problems. |
| Number of pages | As directed by the LA226 studio professor | Add pages at any time via the Pages panel. |
| Facing pages | On | Portfolio pages are designed as spreads — left and right pages as a reader would see them side by side. Design for the spread, not the individual page. |
| Columns | 1 — leave at default | Same rule as the poster. Build the grid visually after the spread is visible. |
| Margins | Outer: 0.5"–0.75" / Inner: 0.375"–0.5" | The inner margin (binding edge) is slightly narrower than the outer — when viewed as a spread, the inner margins of both pages combine to form the gutter between them. |
| Bleed | 0.125" | Portfolio pages are sized for full-bleed printing. Any image or fill that extends to the physical edge of the page must extend 0.125" into the bleed. |
Building the grid visually — Layout → Create Guides
Once the document is open and the page is visible, go to Layout → Create Guides. This dialog lets you set the number of rows and columns plus the gutter width — and the result is immediately visible on the page before you commit to it.
The key advantage: you can see the actual cell size the proposed grid produces relative to the page dimensions. A 3-column grid on a 36"-wide poster produces different cells than a 3-column grid on an 8"-wide portfolio page. Seeing those cells before committing lets you judge whether the proportions serve the content you're placing — and adjust the column count or gutter width until the grid matches the spatial logic of the layout you're building.
| Setting in Create Guides | What to consider |
|---|---|
| Rows | Horizontal divisions. For a poster, 2–3 row divisions are typical. Rows establish the vertical rhythm of the layout — where content transitions from one horizontal band to another. |
| Columns | Vertical divisions. The primary structural tool. 3 or 4 columns on the poster; 2 or 3 on portfolio pages. Observe the cell width before committing — cells that are very narrow or very wide don't serve most content. |
| Gutter | The space between rows and columns. Should be consistent across both axes. A gutter of 0.25" is typical for a tight professional layout; 0.375"–0.5" gives more breathing room. |
| Fit Guides Within Margins | Check this. Guides are placed within the margin boundary — the content area, not the full sheet. This is almost always the correct behavior. |
| Remove Existing Ruler Guides | Check this if you're replacing a previous guide attempt. Leave unchecked if you have manually placed guides you want to keep alongside the new grid. |
Guides created this way are non-printing — they appear on screen for layout reference and disappear in the exported PDF. They can be deleted, moved, or replaced at any time without affecting placed content. The grid is a tool, not a commitment.
Adjusting after the fact
Page size and margins can be changed after layout work has begun via File → Document Setup and Layout → Margins and Columns. Changing page size does not reposition content — everything must be manually repositioned. Avoid changing document setup after substantial layout work is done.
For a specific page that needs a different structure than the rest of the document — a full-bleed title spread in a portfolio, a cover page with centered content — use Layout → Margins and Columns with only that page active. This overrides the margins and columns for that page without affecting any other.
Try this
Create the poster document with margins only — no columns. Open it and look at the blank page. Now go to Layout → Create Guides and try a 2-column grid. Observe the cell width. Switch to 3 columns. Switch to 4. Notice how the cell proportions change relative to the page. Try changing the gutter from 0.125" to 0.5" and observe how it affects the usable column width. You are making a spatial judgment about what those cells can hold before placing a single piece of content. That judgment is more informed when you can see the page than when you're guessing in a dialog box at document creation.
What breaks
Setting the portfolio page size to a non-bleed-compatible dimension — if the portfolio is intended for full-bleed printing, the page size must match the final trimmed sheet size exactly, with bleed set to 0.125". A page sized to the paper size rather than the trim size means the bleed is calculated incorrectly and full-bleed images will not print to the edge.
Facing pages off on a multi-page document — a portfolio built without facing pages enabled cannot be designed as spreads. The layout logic for a left page and a right page as a compositional unit requires facing pages. If this was set incorrectly at creation, it can be changed in File → Document Setup, but all existing pages will reflow.