Add 3mm / 5mm Bleed Margin - Free Online Browser Tool

Expands the PDF art/media box canvas with professional bleed space for edge-to-edge printing.

Bleed is the small extension of your artwork beyond the trim line that guarantees colour runs all the way to the edge. Without it, a guillotine cutting even a millimetre off-square leaves a visible white sliver. This tool adds that margin.

This add 3mm / 5mm bleed margin utility runs completely inside your web browser. Your document is opened locally and processed on your own device using JavaScript and WebAssembly, so your file is never uploaded to any server. There is no signup, no watermark and no limit on how many documents you can handle.

  • 100% client-side - files never leave your device
  • Instant processing, no upload wait
  • Works on desktop, tablet and mobile
  • Free forever, no account required

Common next steps: Add Printer Crop & Trim Marks, Add Extra Margins, Create a Printer Handover Sheet, Inspect PDF Page Boxes.

How to Use the Add 3mm / 5mm Bleed Margin Tool

Four steps, and the whole thing runs locally on your own device.

  1. Load your artwork PDF

    Drop in the design at its final printed size.

  2. Choose the bleed amount

    3mm suits digital and most offset work; 5mm suits larger formats and heavier stock. Larger formats may require more.

  3. Apply the bleed

    The art or media box expands by the bleed amount on every edge.

  4. Download for the printer

    Save the file. Extend any background colour or image to the new edge so there is something there to bleed into.

Frequently Asked Questions

What is bleed and why does it matter?

Bleed extends the design past the cut line so cutting imprecision does not reveal white paper. Without it, any edge alignment error shows as a white line.

How much bleed do I need?

3mm is the common commercial standard. 5mm suits larger sheets and thicker stock, where cutting tolerance is greater.

Does this automatically extend my background?

No, and that is important. The box expands, but any artwork that stops at the old edge needs extending to the new one — otherwise you have paid for bleed you have not used.

Is bleed needed for a text-only document?

No. Bleed matters where colour or imagery runs to the edge. A white page with margins inside trim needs no bleed at all.

Does adding bleed change my design?

No. It enlarges the page box around your existing content; nothing is scaled or repositioned.