Add Bleed
Extend page edges for professional printing.
How to use Add Bleed
- 01
Upload your PDF
Add the print-ready file that needs bleed margins — a poster, brochure, business card, or any edge-to-edge design.
- 02
Set the bleed amount
Choose the bleed distance — 3mm is standard for most print shops — or enter a custom value. Edge content is mirrored to fill the bleed zone.
- 03
Download the bleeded PDF
Save a new PDF with extended page dimensions that include the bleed area, ready for professional printing.
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About Add Bleed
Add bleed margins to your PDF pages — extend the page size by 3mm or custom amounts, mirroring edge content. Essential for professional print jobs where ink runs to the edge of the paper.
Getting edge-to-edge printing right
When a commercial printer cuts a stack of sheets to their final size, the blade can shift by a fraction of a millimetre from one sheet to the next. If the design stops exactly at the intended edge, that tiny shift leaves a visible sliver of white paper on one or more sides — a white hairline that makes the print look amateur. Bleed prevents this by extending the design a few millimetres past the trim line, so no matter where the cut lands within the tolerance, ink is all the way to the edge.
This tool adds bleed margins to your PDF by extending each page's dimensions outward and filling the new area with mirrored edge content. The result is a PDF that meets the print shop's bleed requirements without requiring you to go back to the original design file and rebuild the layout.
How bleed is applied
The tool increases each page's dimensions by the bleed amount on every side. A 210 × 297mm A4 page with 3mm bleed becomes 216 × 303mm. The original content stays centred, and the extra space at each edge is filled by mirroring the outermost strip of the page content. This produces a natural-looking extension that a print shop can trim into.
Mirroring is a practical solution when you do not have access to the original design file. For the cleanest results, design the document with bleed in mind from the start — extend backgrounds and images past the trim line in your design software. But when that is not possible, this tool's mirror-fill approach produces results that are acceptable for most commercial printing.
Who needs bleed and when to use this tool
Graphic designers preparing files for commercial print runs — business cards, posters, brochures, flyers, packaging — need bleed on every job where ink touches the paper's edge. Self-publishing authors add bleed to book covers. Event planners add bleed to printed invitations and programmes. Small businesses preparing marketing materials for a print shop use this when their design software did not include bleed in the original export.
Check your print shop's requirements before adding bleed: most ask for 3mm, but large-format and speciality printers may specify more. If the printer's template already includes crop marks and bleed guides, your design should extend to those guides rather than stopping at the trim line. And remember that bleed only matters for edge-to-edge designs — documents with white margins do not need it because the margin itself acts as a buffer for cutting inaccuracy.
Questions
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What is bleed and why do I need it?
Bleed is extra space beyond the final trim line where the design extends so that when the page is cut, ink reaches the very edge — no white border appears. Without bleed, even tiny cutting inaccuracies leave a visible sliver of unprinted paper.
How much bleed should I add?
3mm (about 0.125 inches) on each side is the industry standard for most commercial printing. Some large-format printers require 5mm. Check with your print shop if unsure.
How does the tool fill the bleed area?
The tool mirrors the edge content outward to fill the bleed zone. This gives the print shop material to cut into, ensuring the design reaches the final edge.
Is the processing done locally?
Yes. Bleed margins are added entirely in your browser. Your design file is never uploaded to any server.