What size bleed does an A2 poster need?

A standard A2 poster is printed with a 420 × 594 mm trim size and needs a 3 mm bleed on every edge, which makes the artwork board 426 × 600 mm and keeps important text and logos inside a 414 × 588 mm safe area.

The numbers

Trim
420 × 594 mm
Bleed box
426 × 600 mm
Safe area
414 × 588 mm
Page
432 × 606 mm
  • The bleed box adds the 3 mm bleed to every edge of the trim, so 420 + 3 + 3 = 426 mm wide and 594 + 3 + 3 = 600 mm tall, giving a 426 × 600 mm bleed box.
  • The safe area pulls the same 3 mm in from every edge of the trim, so 420 − 3 − 3 = 414 mm wide and 594 − 3 − 3 = 588 mm tall, giving a 414 × 588 mm safe area.
  • The page adds room for crop marks on top of the bleed, so 420 + 6 + 6 = 432 mm wide and 594 + 6 + 6 = 606 mm tall, giving a 432 × 606 mm page.
  • Bleed is only added once per edge, so the 3 mm bleed setting adds 6 mm to the total width and 6 mm to the total height, not 3 mm.

The most common mistake is building the artwork at exactly 420 × 594 mm with no bleed at all, so any background colour or image stops right at the trim line and a sliver of white paper shows up along one or two edges after the poster is cut.

Large format is where a missing bleed is most visible, because a white sliver along the edge of a 420 × 594 mm sheet is seen from across a room rather than held in the hand.

Crop marks sit outside the bleed box, so the full page comes out at 432 × 606 mm even though the finished sheet is only 420 × 594 mm.

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Guides are placed in a PDF optional-content layer flagged not to print, so they stay visible on screen but are omitted when the file is printed.

  • Bleed426 × 600 mm
  • Trim420 × 594 mm
  • Safe area414 × 588 mm
Boxmmpt
Bleed box (make artwork this big)426 × 600 mm1207.56 × 1700.79 pt
Trim (final cut size)420 × 594 mm1190.55 × 1683.78 pt
Safe area (keep text inside)414 × 588 mm1173.54 × 1666.77 pt
PDF page (MediaBox)432 × 606 mm1224.57 × 1717.8 pt
Trim
420 × 594 mm
Bleed box
420 + 2 × 3 = 426 mm wide, 594 + 2 × 3 = 600 mm tall

Bleed is added here, and only here. Setting your document page size to the bleed box (426 × 600 mm) and then adding bleed again in your design software double-counts it, leaving a white gap at the crop marks.

Safe area
420 - 2 × 3 = 414 mm wide, 594 - 2 × 3 = 588 mm tall
Marks
3 mm long, offset 3 mm from the trim edge
Page
420 + 2 × 6 = 432 mm wide, 594 + 2 × 6 = 606 mm tall

The page (432 × 606 mm) is larger than the bleed box (426 × 600 mm) so it has room for the crop and registration marks; the artwork itself does not need to fill the page.

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    The generated PDF is a correctly sized blank canvas: a page with MediaBox, TrimBox, and BleedBox set to the dimensions you specify, plus crop marks showing where to cut. It does not contain any artwork.

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    Confirm the bleed value with your printer before sending final artwork.