A tri-fold brochure squeezes six panels of content onto a single sheet folded twice. It is the workhorse format for service overviews, event programmes, and product summaries — small enough to slip into a pocket, large enough to carry a full pitch. Designing one well is mostly a question of getting the panel structure right before any content goes in.
Panel structure
A tri-fold uses one A4 or US Letter sheet in landscape, divided into three vertical panels per side, giving six panels in total. The fold sequence matters: when folded, the right-hand panel of the front side folds in first, then the left-hand panel folds over the top.
That fold order determines what goes where. The outside (front side after folding) shows three panels: the cover panel on the right, the back panel in the middle, and the inside-fold panel on the left — the first thing the reader sees when they begin to open the brochure. The inside (back side) shows three panels in normal reading order, left to right.
If the panels look misaligned in your software, mock up a paper version before designing further.
Content flow
The cover panel carries the title, a short subtitle, and a single hero image or strong visual block. Keep it uncluttered — its job is to make someone open the brochure.
The inside-fold panel works as a primer. For a services brochure, this is where the elevator pitch goes. For an event programme, it carries the date, venue, and headline. The reader has begun to engage but has not yet committed.
The three inside panels carry the bulk of the content, read left to right. For services, that is typically problem, solution, proof. For events, agenda, speakers, registration. For products, features, specifications, pricing. Each panel holds one idea, not three.
The back panel is for contact details, a map, opening hours, or a clear call to action.
Layout grid
Use a margin of at least 8mm on every panel edge — printers cut at the fold lines, and content too close to a fold disappears into the crease. Add a 3mm safe zone inside each fold so that text and key graphics stay clear of the seams.
Align headings and body text to the same baseline grid across panels. When the brochure is unfolded flat, the eye should track horizontally without breaks. A consistent column width and consistent leading make this work.
Typography
Body text sits at 9-11pt for A4 panels, occasionally smaller for dense information panels but rarely below 8pt. Set headings two to three sizes above body, and use weight rather than size for sub-headings — a 12pt bold reads as a heading next to 10pt regular without looking inflated.
Pair a single sans-serif body face with a display face for headings if the brand allows it. A single typeface throughout is fine and often better. Keep line lengths to 35-50 characters per panel; longer lines fight the narrow column.
Print setup
Set the page to A4 or US Letter, landscape, with margins of 5mm. Add a 3mm bleed on all four sides if you intend to send the file to a commercial printer. For home printing, skip the bleed and keep all colour blocks 5mm inside the trim.
Print double-sided. On a duplex printer, select “flip on long edge” — flipping on the short edge inverts the back panels. Test once on plain paper before committing to card stock.
For a full breakdown of paper weights, bleed, and CMYK setup, see print-ready brochure templates. For other fold layouts, including bi-fold and gate-fold options, see brochure folding styles explained.