Adding a margin to a PDF extends the page canvas and pushes the original content toward the centre. The new space is white (or transparent in print terms). The tool works by embedding the original page inside a larger page frame — none of the existing content is re-rendered or resized, so image quality is unaffected.
Free Add Margin — runs in your browser
No uploads. No account. Your file never leaves your device.
Add margins to PDFWhy add margins to a PDF?
PDFs created from scanned documents, exported reports, or design software often have content that extends to or very near the page edge. This causes several practical problems:
- Printer clipping — most desktop printers cannot print to the full edge of a page. A default non-printable margin of 5–10mm means anything closer to the edge than that will be clipped. Adding a margin to the PDF ensures all content is within the printer’s safe zone.
- Binding and hole-punching — documents that will be bound, stapled, or hole-punched need a wider margin on the binding side (typically 25–30mm on the left) so text is not obscured after binding.
- Annotation space — reviewers who prefer handwritten notes need physical space on the page. Adding a 20mm margin on the right or at the bottom gives them room to write without covering content.
- Framing and presentation — PDFs used as visual presentations sometimes look better with some white space breathing room around the content.
How to add margins step by step
Open the Add Margin tool
Upload your PDF
Drag your file onto the drop zone or click to browse. Nothing leaves your device.
Set your margin values
Enter values in millimetres for top, right, bottom, and left. You can also apply a single value to all four sides at once.
Click Add Margin
The tool creates a new, larger page for each page in the document and places the original content inside it, with white space on the specified sides.
Download the result
Click Download to save the expanded PDF.
Recommended margin sizes
| Use case | Recommended margin |
|---|---|
| Fix printer edge clipping | 10mm all sides |
| Ring binding or hole punch (left bind) | Left: 30mm, others: 10mm |
| Right-side annotation space | Right: 25mm, others: 10mm |
| Top header stamp space | Top: 20mm, others: 10mm |
| General document framing | 20mm all sides |
How the tool works
The Add Margin tool uses pdf-lib, a JavaScript PDF manipulation library, to read each page in the document and place it inside a newly created page with larger dimensions. The original page content is embedded as a form XObject (essentially a sub-page), which means:
- No re-rendering: images, fonts, and vectors are preserved at their original quality
- No content re-encoding: no quality loss from JPEG re-compression
- Page dimensions increase by exactly the margin values you specify
This differs from a raster approach (which would render each page to an image and then pad it) — the pdf-lib approach keeps the document structure intact.
Add margins to your PDF now
Set top, right, bottom, left independently. Runs in your browser.
Open Add MarginAdd Margin vs Resize PDF
These tools are related but do different things:
| Tool | What it does |
|---|---|
| Add Margin | Expands the page by adding white space on specified sides. Content stays the same size; page becomes larger. |
| Resize PDF | Changes the page to a standard size (A4, Letter, Legal, etc.), scaling the content to fit. Use this when you need a specific paper size. |
A common workflow: use Add Margin to add binding space, then Resize PDF to normalise everything to A4 if the resulting page sizes are non-standard.
Frequently asked questions
Does adding a margin change the page size or scale the content?
Can I add a margin to only one side of the page?
Why would I need to add margins to a PDF?
Will text and images stay sharp after adding a margin?
What units does the margin tool use?
Is it safe to process confidential PDFs in an online tool?
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