Poster and flyer design rules that make people actually read it

One message, a clear reading order, text you can read from where people stand, and a print file the press won’t send back. The rules, with sizes.

S. Anand KumarUpdated 6 min read
At a glance

How do I set up an A4 flyer for printing?

216 × 303 mmpage size with 3 mm bleed on every side (A4 is 210 × 297 mm)

A4 trim size (ISO 216)
210 × 297 mm
A5 trim size (ISO 216)
148 × 210 mm
A4 at 300 dpi
2480 × 3508 px
Print file
PDF Print, 300 dpi
Short answer

To design a flyer people read, say one thing, make it the biggest words on the page, and put details in a clear order: what, when, where, how to reach you. Keep text big enough for the distance it is read from, keep strong contrast, and for print set up A4 (210 × 297 mm) or A5 (148 × 210 mm) with 3 mm bleed on each side at 300 dpi.

Key points
  1. One message per poster. If you can’t say it in one line, make two posters.
  2. Readers follow size and order: headline, picture, details, then how to contact you.
  3. Letters on a wall poster read from about 3 m should be about 29 mm tall (US sign standard: 5/8 inch + 1/8 inch for each foot past 6 feet).
  4. A4 is 210 × 297 mm, A5 148 × 210 mm (ISO 216); add 3 mm bleed each side and export at 300 dpi.

You printed 500 flyers for your new batch or your Pongal offer, put them up and handed them out, and the phone hardly rang. People saw the flyer. They just didn’t read it.

Most flyers fail for the same few reasons: too much on them, no clear order, text too small for where people stand, and a print file that came back with white edges. This guide gives the design rules that fix those, with the print sizes from the paper standard (ISO 216) and how to set up bleed.

What makes a good flyer or poster?

A good flyer does one job: it makes the right person stop, understand one thing, and know what to do next. That takes three things:

  • One message. “Spoken English classes from 1 November” is one message. Add computer classes, tuition, a phone repair shop and a festival greeting, and nobody remembers any of it.
  • A clear order. The eye goes to the biggest, boldest thing first. Make that the message, not your logo.
  • An easy next step. A phone or WhatsApp number in big type, a QR code, or the address with a landmark.

If someone walking past can tell you what your poster is about after three seconds, the design works.

Poster design rules: the order people read in

Put the parts in this order, from biggest to smallest:

  1. Headline: the one message, in the biggest type on the page. Five to eight words is plenty.
  2. Picture: one clear photo or drawing that shows it (your classroom, your product, a happy customer), not a collage.
  3. Key details: what, when, where, price or “free”. Use short lines, not paragraphs.
  4. Next step: call, WhatsApp, visit, or scan the QR code.
  5. Logo and name: smaller than you think, usually at the bottom or a top corner.

A few more rules that help every time:

  • Leave empty space. White space around the headline makes it louder, not weaker.
  • Use one or two fonts. One bold font for the headline, one plain font for details.
  • Keep strong contrast. Dark text on a light background or the other way round. Text should reach at least 4.5:1 contrast with its background; our brand colours guide shows how to check it.
  • Line things up. Pick a left edge or a centre line and keep everything on it.

Don’t fill every corner. A crowded flyer is harder to read, even when it carries more information.

How big should the text be?

It depends on how far away people stand. A handout is read from about arm’s length; a poster on a wall or a gate is read from across a corridor or a road.

A useful guide comes from the US sign standard (ADA, 2010): letters should be at least 5/8 inch (about 16 mm) tall up to 6 feet away, plus 1/8 inch (about 3 mm) for each foot after that. It is a building rule, not a poster rule, but it shows the scale:

Reading distanceMinimum letter height (capital letters)
Up to about 2 m (6 feet)about 16 mm
About 3 m (10 feet)about 29 mm
About 6 m (20 feet)about 60 mm

So the headline on a gate poster read from the road needs letters several centimetres tall, while the details can be smaller because people step closer once they’re interested. The simplest test: print one copy at full size, stick it where it will go, walk to where people will stand and read it.

Flyer and poster sizes: A4, A5 and A3

India uses the international A sizes from ISO 216. Each size is exactly half of the one above, so folding A4 in half gives A5.

210 × 297 mm A4, the standard flyer and notice size

148 × 210 mm A5, a handout half the size of A4

297 × 420 mm A3, a small poster for walls and counters

A5 is cheaper to print and easy to hand out; A4 has room for a picture and details; A3 and larger suit walls, notice boards and shop windows. Choose the size for where the flyer will be seen, then design for that size from the start (shrinking an A3 design to A5 makes the details unreadable).

Bleed, resolution and the print file

Printing presses print on bigger sheets and trim them. If your colour or photo runs to the edge, they need a little extra beyond the trim line, called bleed, so no white edge shows after cutting.

  • Bleed: add 3 mm on every side. An A4 page becomes 216 × 303 mm. Canva’s own A4 example with bleed is the same size. Ask your press; a few want a different bleed.
  • Safe area: keep text and logos well inside the trim line, never right at the edge.
  • Resolution: print needs 300 dpi. An A4 page at 300 dpi is 2480 × 3508 pixels; A5 is 1748 × 2480. Photos taken from the internet are often too small and print blurry.
  • File: in Canva, download PDF Print (300 dpi, with crop marks and bleed). PDF Standard is 96 dpi, made for screens.
Try it
Class 10 maths

Print file 154 × 216 mmThe finished A5 page.

Figure 1Tap a layer. The A5 print file is 154 × 216 mm: colour runs out to the bleed, which is cut off; words stay inside the safe area.

A worked example: a tuition centre flyer in Kallakurichi

Priya runs a tuition centre in Kallakurichi and needed flyers for her new Class 10 maths batch. Her first draft had five subjects, three phone numbers, a big logo on top, and a photo collage. Nobody could say what it was about.

Her second draft, on A5, followed the order: a headline “Class 10 maths batch, from 3 November” in big bold letters; one photo of her classroom; three short lines (timings, fees, “first class free”); her WhatsApp number in large type with a QR code; her logo small at the bottom. For the A3 copy on the school gate road, she checked the headline from 3 m away: the letters were about 3 cm tall, and it read easily. She set up the print file at 154 × 216 mm (A5 with 3 mm bleed) and downloaded a PDF Print.

She also posted the same design on Instagram, resized to 1080 × 1440 pixels; see our Instagram post size guide. And her logo works small because she followed these logo steps.

Try it
Priya Tuition Centre!!!Maths · Science · English · Tamil · Social · ComputerADMISSION OPENCall 98XXX XXXXX · 97XXX XXXXX · 96XXX XXXXXToppers! Results! Photos! Limited seats!!
Everything shouts
123Priya Tuition · KallakurichiClass 10 maths batch, from 3 NovemberFirst class freeTimings and fees on WhatsAppNear the bus standWhatsApp to join
One message
Figure 2Priya’s first and second drafts (our made-up example). Same facts, one message; switch on the reading order to see how people read it.

Questions

How do I design a good flyer?

Say one thing, make it the biggest words on the page, add one clear picture, then the key details and how to contact you. Leave empty space, use one or two fonts and keep strong contrast.

What is the size of a flyer in India?

The common sizes are A4 (210 × 297 mm) and A5 (148 × 210 mm), from the ISO 216 standard. A5 is cheaper and easy to hand out; A4 has room for more. Posters often use A3 (297 × 420 mm) or larger.

What is bleed in flyer design?

Bleed is extra artwork beyond the trim line, so no white edge shows after the sheet is cut. Add 3 mm on every side; an A4 page becomes 216 × 303 mm. Check with your printer, since a few ask for more.

What resolution should a flyer be for printing?

300 dpi. An A4 page at 300 dpi is 2480 × 3508 pixels. In Canva, download PDF Print, which saves at 300 dpi with bleed and crop marks.

How big should text be on a poster?

Big enough for the distance it’s read from. A US sign standard suggests letters of about 16 mm at 2 m and about 29 mm at 3 m, growing about 3 mm for every 30 cm further. Test by printing one copy and reading it from where people will stand.

Can I design a flyer on my phone?

Yes. Canva and similar apps have A4 and A5 templates and work on a phone. Set the size before you start, keep to one message, and download PDF Print for the press.

How many words should a flyer have?

As few as do the job: a short headline, three or four short lines of detail and a contact. Put the full syllabus, menu or terms on your website or in a WhatsApp message, and point to it with a QR code.

Sources

Checked 18 Oct 2026
  1. ISOISO 216:2007 Writing paper and certain classes of printed matter: trimmed sizes, A and B series · International Organization for Standardization2007

    The A series of paper sizes: A3 297 × 420 mm, A4 210 × 297 mm, A5 148 × 210 mm; each size is half the one above. Sep 2007

  2. CNVUse margins, bleed, rulers and crop marks · Canva Help Center2026

    How to show print bleed and add crop marks when downloading a PDF Print; its A4 example with bleed is 216 × 303 mm (3 mm each side). Check bleed with your own printer. checked 18 Oct 2026

  3. CNVChoose the right download file type for your Canva design · Canva Help Center2026

    PDF Print is the file for printing, at 300 dpi with bleed and crop marks; PDF Standard is 96 dpi, for screens. checked 18 Oct 2026

  4. DOJ2010 ADA Standards for Accessible Design, 703.5.5 Visual character height · U.S. Department of Justice2010

    Minimum letter height for signs: 5/8 inch up to 6 feet away, plus 1/8 inch for each extra foot. A US building rule, used here only as a guide to readable sizes. 15 Sep 2010

  5. W3CWeb Content Accessibility Guidelines (WCAG) 2.2 · W3C2024

    Text should have at least 4.5:1 contrast against its background (3:1 for large text). 12 Dec 2024

S. Anand Kumar
Written byS. Anand Kumar

Founder of Elathi, Kallakurichi. Writes our guides and builds the free tools that go with them.

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