Custom PDF Margin
Add or adjust custom page margins to PDF documents. Control top, bottom, left, and right margins with scale or canvas expand modes.
Upload PDF to Adjust Margins
關於此工具
Custom PDF Margin allows you to precisely adjust and add margins around your PDF pages. Whether you need extra space for binding, annotations, hole-punching, or standard document borders, this tool gives you complete control over Top, Bottom, Left, and Right margins.
Choose between two powerful processing modes: Scale Content to keep your standard page dimensions (A4, Letter) while shrinking content inward, or Expand Canvas to enlarge page dimensions without altering the original content size.
Supports quick presets (Normal, Narrow, Wide, Book Binding Gutter), millimetre, inch, and point units, custom margin colors, and live interactive canvas preview.
使用方法
Upload PDF
Drag and drop your PDF file into the upload zone.
Set Margins & Mode
Select a preset or enter custom Top, Bottom, Left, and Right margins. Choose Scale Content or Expand Canvas mode.
Preview & Process
Inspect the live preview with margin overlay guidelines, then click Apply Custom Margins.
Rename & Download
Download your updated PDF with default or custom file name.
使用場景
Book Binding & Printing
Add extra gutter margin on the left/inner edge for binding and hole-punching.
Handwritten Notes & Annotations
Enlarge page margins to leave plenty of whitespace for reviewer comments and notes.
Standardize Page Padding
Normalize inconsistent or zero-margin scanned documents with neat uniform borders.
常見問題
What is the difference between Scale Content and Expand Canvas?
Scale Content keeps original page dimensions (like A4) and scales down content to fit inside margins. Expand Canvas enlarges the total page dimensions by adding border padding around original 100% size content.
Can I apply margins to odd or even pages only?
Yes, you can apply margins to all pages, odd pages only, even pages only, or custom page ranges.
What units are supported?
You can define margins in millimetres (mm), inches (in), or standard typographic points (pt).