Add Extra Margins - Free Online Browser Tool

Add extra padding around existing page content for annotations or notes.

Need room in the margin for a stamp, a reviewer’s initials or a binding edge? This tool grows the page canvas and pushes the existing content inwards, keeping everything at its original scale so the layout of your document is unchanged.

This add extra margins 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: Crop PDF Margins, Alternate Merge (Duplex), Add 3mm / 5mm Bleed Margin.

How to Use the Add Extra Margins Tool

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

  1. Load the PDF

    Drop in the document that needs breathing room.

  2. Enter the margin to add

    Specify how much extra space to add — in points, millimetres or inches depending on the unit shown.

  3. Choose which edges get the space

    Add to all four sides uniformly, or bias it to one edge, such as a wider left margin for binding.

  4. Apply and download

    Press Add Margins. The page becomes larger and the content shifts inwards at the same size.

Frequently Asked Questions

Does adding margins shrink my content to fit?

No. Content keeps its original size and position; the page simply grows around it. That is the difference between adding margins and resizing the canvas.

What happens if the extra margin is large?

The page size grows to accommodate it. Very large margins produce unusually large pages, so check the resulting dimensions before printing.

Can I add a wider left margin for spiral binding?

Yes, and that is the standard use. Alternatively, Add Binding Margins builds a proper gutter with the content repositioned to suit binding.

Does this affect page count?

No. Margins are added around existing pages; no pages are added or removed.

Why would I not just use Crop Pages in reverse?

Cropping removes whitespace. This adds it. You want adding when a document needs room for a stamp or binding, and cropping when a document has too much empty space.