Bleed is the strip of extra background, color or photo that runs past the final edge of a design. Printers print on bigger sheets and then cut them down, and the blade never lands in exactly the same spot twice. Art that stops right at the edge can leave a thin white line; art that runs past it does not. In the US the usual bleed is 1/8 inch on every side, and many printers outside the US ask for 3 mm.
Bleed matters any time color or a photo touches the edge of a business card, flyer, postcard or sign. A file without it is one of the most common reasons a print job is sent back or comes out with uneven white slivers.
Say a florist called Fern & Twine sends a 4 x 6 postcard with a full-bleed photo but no extra art past the edge. The printer either stretches the photo or asks for a new file, and the order waits a day.
In aiKit, Printer's Helper adds bleed from the art's own edge and sets the PDF print boxes when you ask in plain words, Pro Designer Automate adds mirrored bleed to a whole folder of files at once, and Magic Canvas print sizes start with bleed and a safe area already marked.
Related terms
See it in practice
How to add bleed to a PDF for printing
Add 1/8 inch bleed to a PDF in plain words: aiKit extends the art past the cut, sets the print boxes, checks the file and gives you a proof to approve.
GuideHow to send a proof customers can approve from their phone
Send a design proof as a private link customers open on a phone, mark up with pins and approve with their typed name. No account needed for them.
Use caseAI tools for bakeries: specials, photos, videos and reviews
AI tools for bakeries: daily special posts, menu flyers, captioned videos and review asks from one account. Free to start with a monthly AI allowance.
Use casePrint-ready files for print shops: fix customer art by asking
Fix customer files by asking: add bleed, resize, check, set PDF boxes. Get a print-ready PDF, a file check and a proof link. Free to start.
Use caseOnline proofing for print shops: a clear, signed yes on every job
Send print proofs with cut and safe lines. Customers pin comments and approve by typed name from a phone, no account. Free to start with aiKit.