DTP

Bleeds, margins, printer's marks - how not to ruin the project

Your first project for print? You sent the file, and the printer replied: "No bleed. Please correct it." You open Google, read a few articles, and still don't know exactly what to do. I'll show you. all printing conceptsthat you really need, in one specific example of business cards + flyers - with exact values in mm.

In short

  • Bleed = excess graphics 3 mm beyond the net edge to avoid white stripes after cutting.
  • Safe margin = 3-5 mm from the cutting edge for text and logo.
  • Crop marks = arrows where the printer should cut the paper.
  • Registration marks = color calibration marks (the printer sets them, you don't have to).
  • Net format = dimension of the finished product. Gross format = with bleeds.

Why do bleeds exist?

Cutting problem in the printing house

The paper cutting machine has accuracy ±0.5-1 mmThis means that a finished 90 × 50 mm business card can actually be:

  • 89.5 × 49.5 mm (less)
  • 90.5 × 50.5 mm (more)
  • Slightly crooked

No bleeds

If the background color ends exactly on the edge of the net (90 × 50 mm) and the machine cuts 0.5 mm further = appear white strips of paper.

+-----------------+
|░░░░░░░░░░░░░░░░░|  <- nasz projekt 90 x 50 mm
|░░░░░░░░░░░░░░░░░|
+-----------------+
       ↓ cięcie 0,5 mm dalej
+-----------------+
|░░░░░░░░░░░░░░░░░|
|░░░░░░░░░░░░░░░░░|
|░░░░░░░░░░░░░░░░░|
|     B I A Ł Y    | <- biały pasek papieru
+-----------------+

With drops

You are expanding the background by 3 mm in each direction (96 × 56 mm). When the machine doesn't hit perfectly, there is still a background in the visible area.

Anatomy of a Project - 3 Areas

+============================+ <- LINIA SPADU (96 × 56 mm)
║                            ║   tło sięga aż tutaj
║  +----------------------+  ║
║  |                      |  ║ <- LINIA CIĘCIA (90 × 50 mm) 
║  |  +----------------+  |  ║   wymiar gotowej wizytówki
║  |  |                |  |  ║
║  |  | bezpieczny     |  |  ║ <- BEZPIECZNY OBSZAR (84 × 44 mm)
║  |  | obszar tekstu  |  |  ║   tekst, logo TYLKO tutaj
║  |  |                |  |  ║
║  |  +----------------+  |  ║
║  |                      |  ║
║  +----------------------+  ║
║                            ║
+============================+

═════ = linia spadu (gdzie kończy się tło)
----- = linia cięcia (gdzie drukarnia tnie)
spacja = bezpieczny margines (gdzie tekst/logo)

3 areas in a nutshell

AreaSize (business card example)What could be here?
Bleed96 × 56 mmJust background or graphic elements
Cutting line90 × 50 mmReady dimension
Safe margin84 × 44 mmText, logo, important elements

Bleed values for different formats

Small formats (business cards, leaflets)

  • Bleed: 3 mm
  • Safe margin: 3 mm

Medium (A3-A2 posters, A4 leaflets)

  • Bleed: 3 mm (sometimes 5 mm)
  • Safe margin: 5 mm

Large (A1 posters, banners)

  • Bleed: 5 mm (banners up to 10 mm)
  • Safe margin: 10-20 mm

Large format (billboards, large-size banners)

  • Bleed: 50-100 mm (note: very large!)
  • Safe margin: 100-150 mm

In large format the mounting system eats up the edgesThe larger the print, the greater the bleed.

Books, brochures

  • Bleed: 3 mm
  • Safe margin: 5 mm
  • Inner margin (spine side): 12-20 mm to maintain readability after stitching/gluing

Configuration in popular programs

Adobe InDesign

File → New → Document
- Page Size: 90 × 50 mm (netto)
- Bleed: Top/Bottom/Inside/Outside: 3 mm
- Margins: 3 mm

InDesign will automatically show 3 areas colored lines:
Red line = bleed
Black = cutting
Purple = safe margin

Adobe Illustrator

File → New
- Width: 90 mm, Height: 50 mm (netto)
- Bleed: 3 mm

Illustrator shows red frame = bleed line.

Affinity Publisher / Designer

File → New
- Document size: 90 × 50 mm
- Include bleed: ✓ 3 mm
- Margins: 3 mm

Canva (Pro)

Canva doesn't have "traditional" bleed settings, but when exporting to PDF Print you can check "Add bleed marks" - Canva automatically adds 3mm.

Canva's disadvantage: Limited control, sometimes bleeds are imprecise. For professional printing, we recommend InDesign / Affinity Publisher.

Printer's marks

Crop marks

Small arrows in the corners indicating the cutting line to the printer.

┌─                   ─┐
│                     │

│                     │
└─                   ─┘

Configuration in InDesign on export:
– File → Export → PDF
– Marks and Bleeds → ☑ Crop Marks
– Offset: 3 mm (offset = distance from the cutting line so that the marks do not overlap the image)

Bleed marks

Second markers - show where the drop endsLarger printers use both crop and bleed marks.

Registration marks

Crosses (usually 4 - 1 in each corner of the page) used by the printer to CMYK color overlay calibration.

You do NOT have to add them — the printing house generates them automatically. If you see "Registration Marks" during export, leave it not checked.

Color bars

Color strips (CMYK + Pantone) used by the printer to paint density control.

You do NOT add — the printing house generates. When exporting DO NOT check "Color Bars".

Page Information

A line of text showing the file name, date, version, ICC profile.

Optional — some printers want it, some don't. Check the requirements of a specific printing house.

Most common formats + bleeds - cheat sheet

ProductNet dimensionWith bleed (+3 mm)Safe area
Business card90 × 50 mm96 × 56 mm84 × 44 mm
A6 leaflet105 × 148 mm111 × 154 mm99 × 142 mm
A5 leaflet148 × 210 mm154 × 216 mm142 × 204 mm
A4 leaflet210 × 297 mm216 × 303 mm204 × 291 mm
A3 poster297 × 420 mm303 × 426 mm291 × 414 mm
A2 poster420 × 594 mm426 × 600 mm414 × 588 mm
A1 poster594 × 841 mm600 × 847 mm588 × 835 mm
Roll-up banner 85×200850 × 2000 mm870 × 2050 mm800 × 1950 mm
A5 book148 × 210 mm154 × 216 mminternal: +15 mm

Pitfalls that stop a project

❌ Trap 1: The background "almost reaches" the edge

Background on 88 × 48 mm in a 90 × 50 mm business card = 2 mm white frame after cutting. It looks like it was cut badly.

Solution: background expand for the entire bleed area (96 × 56 mm).

❌ Trap 2: Text on the cut line

Telephone "+48 123 456 789" starts 0.5 mm from the net edge. After offsetting the cut by 1 mm - you lose the first digit.

Solution: minimum text 3-5 mm from the edge (safe margin).

❌ Trap 3: Logo touches the edge

The client "wants it"—the logo on the edge of the business card. Risk: after cutting, the logo is "cut off."

Solution: the client accepts the risk and leaves a warning in the project + maintains a minimum of 1 mm of space.

❌ Pitfall 4: No bleed in PDF exported from Canva/Word

Word does not support bleeds. Every Word file for printing = problem.

Solution: print design do in InDesign/Illustrator/Affinity (or Canva Pro). Word = NO.

❌ Trap 5: Bleed without crop marks

The file is 96 × 56 mm (with bleed), but no crop marksThe printer doesn't know where to cut - they might cut it wrong.

Solution: always turn on Crop Marks when exporting PDF.

Special situations

Double-sided printing (front/back)

2-sided business card = 2 pages PDFEach with a 3 mm bleed.

Attention: the printing house needs to know if the pages are mirror image (when rotating on the "shorter side" - flip horizontal) or not.

Books, brochures

Inner margin (on the back side) must be greater than the external one - because the stitching/gluing "hides" the text close to the spine.

Standard:
– Outer margin: 12-15 mm
– Inner margin: 18-25 mm
– Top margin: 12-15 mm
– Bottom margin: 15-20 mm

Stickers, labels

Bleeds depending on the type of cutting:
Contour cutting: bleed 1-2 mm
Cutting on sheets: bleed 3 mm

Ask the printer — each has its own requirements.

Folded brochures (folded booklets)

Each fold = separate safe zone. Text cannot be on the fold line.

Typical A4 leaflet folded in three:
– 99 × 210 mm (each side folded)
– Safe area: 5 mm from the fold line

What's next

This week:

  1. Open a graphics program and create a template for a business card with a 3 mm bleed and 3 mm margins
  2. Save as template — use as a base for any new project
  3. Check if you have it enabled by default in PDF export Crop Marks
  4. Before sending each file - open in Adobe Acrobat and check if you see the crop marks

We create graphic designs with correct bleeds right away — business cards, leaflets, folders, posters. Contact us for a quote.

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