A leaflet that is too small can disappear in a busy display. One that is too large can feel awkward to carry, costly to post or simply more than your message needs. Knowing how to choose leaflet sizes starts with a practical question: what does the recipient need to do with it once they have picked it up?

For a restaurant promotion, a compact menu or offer card may be exactly right. For an event programme, price list or service guide, people need more room to read. The best format is not automatically the biggest or cheapest one. It is the size that gives your message space to work, suits how it will be handed out and makes a good impression of your business.

Start with the job your leaflet needs to do

Before choosing dimensions, think about the leaflet’s purpose. Is it a quick introduction to a new service, a voucher designed to be kept, a takeaway menu, an estate agent’s property sheet or information for visitors at an event? Each job asks different things of the page.

A simple offer with a strong image, short headline and clear call to action can work brilliantly on a small format. A leaflet explaining several services, prices, opening hours and contact details needs more breathing room. Trying to force too much information onto a small sheet produces tiny type, crowded images and a piece of print that is easy to ignore.

Distribution matters just as much. If your team will hand leaflets to people on the high street, a compact format is easy to hold and carry. If they are being placed in local cafés, reception areas or display stands, an A5 leaflet is a familiar, versatile choice. For direct mail, consider the envelope, postage category and whether the piece needs to arrive folded or flat.

The most useful leaflet sizes at a glance

Most business leaflets are based on standard paper sizes. This keeps production straightforward, makes matching envelopes easier and usually offers the best value. The four formats below cover the majority of promotional print.

A6: small, useful and budget-conscious

A6 measures 105 x 148mm, roughly postcard size. It is an effective choice for vouchers, appointment reminders, event invitations, seasonal offers and simple promotional messages. It is affordable to print in volume and easy for recipients to slip into a pocket or handbag.

The trade-off is space. A6 works best when there is one clear message. Use a strong visual, a short headline, essential details and one next step, such as visiting a shop, booking a table or scanning a QR code. It is not the place for a lengthy company history or a full list of services.

DL: made for counters, letterboxes and menus

DL measures 99 x 210mm. Its tall, slim shape feels natural in a standard business envelope and is a popular option for menus, price lists, service promotions and mailshots. It is also a practical format for counter displays because it takes up little room while still giving a design enough height to make an impact.

A DL leaflet encourages a clear vertical reading order: headline, image or offer, supporting detail, then contact information. It can feel more premium than a small card, but be careful with wide landscape photographs or complicated tables. Those elements may be better suited to A5 or A4.

A5: the dependable all-rounder

At 148 x 210mm, A5 is the format many businesses choose first, and for good reason. It has enough room for useful copy, product images, maps, price points and a clear call to action without becoming difficult to distribute. It suits retail promotions, hospitality menus, local campaigns, training courses, charity appeals and event information.

If you are unsure where to start, A5 is often the safe choice. It gives a designer room to create hierarchy, so the reader can quickly see the main offer before deciding whether to read further. It also works well on both sides, allowing one side to grab attention and the reverse to provide detail.

A4: when detail needs room

A4 measures 210 x 297mm and is best when the leaflet has a real job to do beyond promotion. Think product sheets, detailed service information, event schedules, property particulars or documents that customers may file away for reference.

An unfolded A4 sheet is less convenient for casual handouts, but it becomes far more versatile when folded. An A4 sheet folded in half creates an A5 four-page leaflet. Folded into thirds, it creates a six-panel DL brochure. This is a cost-effective way to give structured information a more polished, brochure-like feel.

How to choose leaflet sizes around your content

A useful rule is to write your content outline before settling on a format. List the information that genuinely needs to appear, then separate it into essential and optional detail. The essential points should fit comfortably on the front or first panel: who you are, what you are offering and why the reader should care.

If you need to include testimonials, multiple packages, a map, terms and conditions or several product images, move up a size or use a folded leaflet. Do not rely on reducing the font size to make everything fit. Small text may be technically readable, but it does not make for easy reading in a café, shop queue or exhibition hall.

Photography also affects the decision. A dramatic landscape image often benefits from A5 or A4, while a single product shot can be very effective on DL or A6. If your brand uses bold type, generous white space and minimal copy, a smaller format can look confident and premium. If the design needs diagrams, menus or comparison tables, give it room.

Folding creates more pages, but adds decisions

Folding is one of the best ways to add space without handing out an oversized sheet. However, it needs to be planned from the beginning. A folded leaflet has panels, not simply pages, and the outside panels have different roles from the inside ones.

A half fold is simple and ideal for an A4 sheet becoming an A5 leaflet. A roll fold creates three panels that fold in on each other, while a Z-fold opens out like an accordion and works well for sequential information such as directions, steps or a timeline. Gate folds can look striking for premium invitations or launches, though they are not always necessary for everyday marketing.

Keep key text away from fold lines. The panel that folds inward may need to be slightly narrower to close neatly, so do not design each panel as identical without checking the fold plan. A print professional can confirm the finished panel sizes and supply a suitable template before the artwork is started.

Think about cost beyond the print price

Larger leaflets use more paper and may cost more to print, but unit cost is only part of the picture. The right size can reduce waste by making the message clearer and more useful. A well-designed A5 leaflet that brings people through the door is better value than a cheaper A6 card that does not communicate enough.

Also consider the cost of distribution. A piece that needs to be posted may require a larger envelope, a different postal rate or folding. For door drops, size and weight can affect handling. At events, a small stack of compact leaflets is easier for staff to carry and for visitors to take away. If the leaflet will sit in a display stand, check the stand dimensions first.

Paper stock changes the feel as well. A lighter stock is practical for large-volume campaigns and inserts, while a thicker stock adds substance to an invitation, menu or premium promotion. Gloss can make images and colours stand out; silk offers a smooth, professional finish with less glare; uncoated stock feels more natural and is easier to write on. These choices should support the purpose, not distract from it.

Give the design enough safe space

Whichever format you select, the artwork needs a little technical care. Print is trimmed after production, so background colours and images should extend beyond the final edge. This extra area is called bleed. Keep text, logos and important details safely inside the edge too, particularly on small formats where every millimetre matters.

Do not place a mobile phone number, QR code or key line of copy too close to a fold or trim edge. A QR code needs clear space around it and should be tested at its printed size before going to press. These small checks prevent a leaflet that looks good on screen from becoming frustrating in the real world.

If you have an existing logo, photographs and brand colours but no finished artwork, getting design support early can save time. It is much easier to choose the right leaflet size when the content, layout and print finish are considered together rather than as separate decisions.

Choose a size that people will keep

The strongest leaflets earn a second look. A useful discount, a well-laid-out menu, a clear service guide or an attractive event programme is more likely to be kept than a crowded sheet trying to say everything at once.

For businesses across Sheffield and beyond, Print by Volta can help turn an initial idea into a size, stock and finish that suits the campaign, the budget and the deadline. Bring the message you need to share, and let the format do its fair share of the work.