What Is Full Bleed Printing and How Much Bleed Your File Needs

Full bleed is the printing term for a piece where the ink reaches the physical edge of the paper with no white border. A postcard with a photograph covering the whole front is full bleed. A business card with a solid color background running off all four sides is full bleed. A flyer with a white margin around the outside is not.

It sounds like it should be the simplest thing in the world, and on screen it is: you drag a rectangle to the corners of the page and you are done. On paper it is not, for two mechanical reasons. First, a press needs to grip the sheet, and it cannot lay ink perfectly onto the extreme edge of the paper it is holding. Second, no cutting process is perfect to the thousandth of an inch, especially through a stack of hundreds of sheets at once.

So full bleed is produced the only way it can be: the piece is printed larger than its finished size, and then it is cut down through the artwork. The blade passes through the middle of your ink rather than at the boundary of it. That is what gives you a clean colored edge on the finished piece.

Everything else in this guide follows from that single fact. If the cut goes through the artwork, the artwork has to be bigger than the finished piece. The amount by which it is bigger is the bleed. And because the cut can land a fraction of an inch to either side of where it was aimed, anything important has to be kept away from that line too. Those two rules, applied properly, are the difference between a flyer that looks intentional and one with a hairline white stripe down one side.

The working number for small format printing is 0.125 inches, one eighth of an inch, on every side. Here is what that looks like on the pieces people order most, expressed as trim size and then as the total document size once bleed is added.

• Business cards. Trim 3.5 by 2 inches. Document with bleed 3.75 by 2.25 inches. Keep live text 0.125 to 0.25 inches inside the trim, which is tighter than it sounds on a card this small.
• Postcards. Trim 4 by 6 inches. Document with bleed 4.25 by 6.25 inches. If the card is going in the mail, the address side has its own clear area requirements on top of the safety margin.
• Flyers. Trim 8.5 by 11 inches. Document with bleed 8.75 by 11.25 inches. The same eighth of an inch applies regardless of how much larger the page is.
• Brochures and folded pieces. Bleed applies to the flat size, not the folded size. An 11 by 17 sheet folded in half is built at 11.25 by 17.25 with bleed, and the fold positions are marked separately.
• Booklets. Bleed on all outside edges of every page, plus extra care on inner margins because creep pulls artwork toward the trim as the book gets thicker.

Large format work is the exception worth checking rather than assuming. Posters, banners and anything with hems, grommets or pole pockets need more material at the edges, because part of the printed area is folded over or wrapped rather than simply cut. Always start from the product template for those, since the required allowance depends on the finishing you have selected rather than on a single universal number.

Rounded corners deserve a specific warning. Because the corner is die cut on a radius rather than cut square, the effective safe zone at each corner is further in than it is along the straight edges. Keep logos and text away from the corners on any card with a rounded finish.

Illustrator works almost identically to InDesign. In the New Document dialog, set the artboard to the trim size and enter 0.125 inches in the bleed fields, or open File, then Document Setup, on an existing file. A red guide appears outside the artboard. Run background art to that guide. When you save, use Save As and choose Adobe PDF, then in the Marks and Bleeds panel tick Use Document Bleed Settings and add crop marks with an offset.

The Illustrator specific trap is live type and effects. Text that has not been outlined depends on the font being available, and effects such as drop shadows and transparency can behave unexpectedly when flattened. Either outline your type before exporting, or export a PDF that embeds the fonts, and preview the result rather than assuming.

Photoshop has no bleed setting at all, because it is a pixel editor rather than a page layout tool. You create bleed by making the canvas bigger. If the finished piece is 4 by 6 inches, build the file at 4.25 by 6.25 inches and remember that the outer eighth of an inch on every side will be cut away. Pull guides at 0.125 inches from each edge to mark the trim, and another set at 0.25 inches to mark safety, so you can see all three boundaries while you work.

Two Photoshop settings matter more than bleed does. Work at 300 pixels per inch at the final printed size, because an image that looks sharp on screen at 72 pixels per inch will be visibly soft on paper. And work in CMYK if you can, because bright screen colors, especially vivid blues and oranges, shift when converted for press, and it is better to see that shift in your file than on the printed piece. If the design is mostly type, build it in InDesign or Illustrator and use Photoshop only for the images.

A PDF is the format to send, and a PDF that merely has bleed configured in the source document is not the same as a PDF that contains bleed. The export settings decide which one you get.

• Preset. Choose a press or high quality print preset rather than the smallest file size option. Compression aimed at email will soften images that looked fine in the layout.
• Bleed. Tick Use Document Bleed Settings, or enter 0.125 inches in all four fields by hand. This is the step people skip.
• Crop marks. Turn them on and set the offset to at least 0.125 inches so the marks sit clear of the bleed instead of printing on top of your artwork.
• Images. Effective resolution should be 300 pixels per inch at final size. A logo pulled from a website at 72 pixels per inch will look soft no matter how good the press is.
• Color. Supply CMYK for offset and digital work. Colors defined in RGB have to be converted somewhere, and it is better to see the conversion in your file than to be surprised by it.
• Fonts. Embed them, or outline the type. A missing font substitution is the one error that changes your layout without changing anything visible on your own machine.

Then open the PDF, ideally in Acrobat rather than a browser preview, and look at it as though it were the printed piece. The artwork should run past the crop marks on all four sides. No text should sit within an eighth of an inch of the trim. Page count and page order should be exactly what you intend. That inspection takes two minutes and it is the single highest value habit in print file preparation.