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Free Online PDF Margin Adder, Add White Space for Binding or Notes

Add white space around the pages of a PDF. Set top, right, bottom and left separately, then either grow the page and keep the content its own size or keep the page size and pull the content inwards, with mirrored margins for anything that will be bound.

Free Forever Nothing Uploaded Each Side Separately Mirrored for Binding
Free Online PDF Margin Adder, Add White Space for Binding or Notes
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Add margins Drag and drop a PDF. White space is added on any side you choose, either by growing the page or by pulling the content inwards, inside your browser. Select a PDF File Up to 200 MB • 3,000 pages • nothing is uploaded
document.pdf
The margins
mm
mm
mm
mm
For a document that will be printed double sided and bound, so the binding edge always gets the wider margin.
Output
.pdf

Margins added
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How to Add Margins to a PDF

Four steps, and the file never leaves your computer.

1
Step 1

Drop the PDF in. Nothing is uploaded; it is read where it already is.

2
Step 2

Type how much space you want on each side, in millimetres.

3
Step 3

Choose whether the page grows or the content shrinks, and turn on mirroring if it will be bound.

4
Step 4

Press Add the margins and download the new file.

What It Does, and What It Cannot Do

Growing the page against shrinking the content.

Growing the page changes the paper size. Ten millimetres all round turns A4 into something slightly larger than A4, which most printers will then shrink back to fit. If the document must stay a standard size, shrink the content instead, or grow it and then run it through our Page Size Converter.
Shrinking the content makes the type smaller. Twenty millimetres of margin on an A4 page reduces everything to about ninety percent, so ten point text becomes nine. Fine for reading, worth checking if the document has small print.
Mirrored margins are for double sided printing only. They put the wider margin on the binding edge, which swaps sides on every other page. Printed single sided the result looks lopsided, because it is.
Margins here are added around what is on the page, not around the text. A PDF does not know where your text block ends, so a page with a full width photograph gets the same treatment as a page of prose.

Key Features & Capabilities

Designed for speed, privacy, and precision.

Never uploaded

Everything happens in your browser, so a thesis or a manuscript can be prepared for binding without going anywhere.

Every side separately

Top, right, bottom and left each take their own measurement, which is what binding and note taking actually need.

Grow or shrink

Make the page bigger and keep the content its size, or keep the page and pull the content in. Both are explained, including the cost.

Mirrored for binding

The wider margin follows the binding edge from page to page, the way a printed book is set.

Text stays text

Pages are placed rather than redrawn, so words stay selectable and line art stays sharp.

Only some pages

Apply margins to the whole document or a selection, written as 1, 4, 7-9, odd or even.

About the PDF Margin Adder

This tool adds white space around the pages of a PDF. Room on the left for a ring binder, room at the bottom for a signature, room all round for a document that will be trimmed, or space in the margin for somebody to write notes in a meeting.

There are only two honest ways to make that room, and the page offers both. Growing the page keeps everything on it at its original size and makes the paper larger, which is what binding wants and what changes the paper size. Shrinking the content keeps the paper exactly as it was and pulls everything inwards, which keeps A4 as A4 and makes the type slightly smaller. Neither is better; they answer different questions, and the page says which is which.

Mirrored margins are there for anything that will be bound. The wider margin has to sit on the binding edge, and that edge swaps side on every other page once a document is printed double sided. Setting that by hand is tedious and easy to get backwards.

Everything runs in your browser, with no upload and no account. Pages are placed rather than redrawn, so the text stays real text and the document stays a document.

Frequently Asked Questions

Binding room, note taking space and printer edges.

Drop the file here, put the extra width on the binding side, leave the mode set to grow the page and turn on mirroring if it is printed double sided. The pages get wider and nothing on them is reduced, which is what a binder needs.

Because growing the page adds the margin to the paper. That is the point of that mode. If the size has to stay A4, choose to shrink the content instead, which keeps the sheet and moves everything inwards.

Yes. Set the sides you do not want to zero and give the one you do want a measurement. A common example is thirty millimetres on the left for a ring binder and nothing anywhere else.

It swaps the left and right margins on every second page, so the wider one always lands on the binding edge once the document is printed double sided. On a single sided print it looks uneven, which is why it is off by default.

No. A PDF holds marks at coordinates, not paragraphs, so nothing can reflow it. The whole page is moved or scaled as one piece. Reflowing means exporting again from the program that made the document.

No. The new file is built entirely inside your browser, which you can prove by disconnecting from the internet and using the page anyway.

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