Trimming PDF Margins
Open your PDF
Drop the file in or click to browse. The tool reads the first page size and shows it, so you know how much room you have to trim before anything is cut.
Set how much to cut
Type one value in All sides to trim evenly, or set the top, right, bottom, and left amounts separately. Choose millimetres, inches, or points to match how you measure.
Crop and download
Press Crop PDF. The visible area of every page shrinks by the amounts you set, and the trimmed file is offered for download. Your original stays as it was.
How Cropping Works Here
This tool changes each page's crop box, the rectangle a viewer shows and a printer uses, rather than deleting anything from the page. That keeps the operation instant and lossless, and it means a crop can be widened again later because the trimmed content still exists behind the new edge.
| Setting | What it does |
|---|---|
| All sides | Fills the four side boxes with one value for an even trim |
| Top, right, bottom, left | Trims each edge by its own amount for an uneven crop |
| Units | Reads your numbers as millimetres, inches, or points |
| Every page | The same margins are applied across the whole document |
| Safety check | A page is skipped if the trim would leave almost nothing, so the file stays valid |
When Trimming Margins Helps
Tidy scanned edges
Scans often carry a grey border or a black scanner edge. Trim a few millimetres off each side to leave a clean page.
Fit an e-reader
Cutting wide print margins makes the text fill more of a tablet or e-reader screen, so it is larger and easier to read.
Remove a header or footer
Trim from the top or bottom to drop a running header, a footer, or a page number that you do not want to keep.
Prepare for print
Bring a document to a tighter margin before printing or placing it into another layout, without redrawing the pages.