Add professional crop marks to your PDF for print production.
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This tool adds professional crop marks (also called trim marks) to your PDF at the correct positions based on your page geometry. It lets you configure mark length, offset, and colour before generating a print-ready file with trim guides included.
Crop marks tell the printer exactly where to trim the final piece. Without them, the printer must guess the trim position, which can lead to inconsistent cuts across a print run. Including crop marks ensures every piece is trimmed to the correct size.
Crop marks are short lines placed at the corners of a page outside the trim area. They indicate where the printed sheet should be cut to produce the final trimmed piece.
You need crop marks when printing on a sheet larger than the final page size and trimming to size afterward. This is standard for most commercial print jobs, especially on offset presses.
A mark length of 3 mm to 6 mm (0.125 to 0.25 inches) is typical. Shorter marks are less visible but still functional, while longer marks are easier for operators to see on press sheets.
No. Crop marks are added in the bleed area outside the page boundary. Your content remains exactly where it was. The page size itself does not change either.
Adding duplicate marks on top of existing ones can cause confusion on press. Check your file first and only add marks if none are present or if the existing marks are in the wrong position.
Verify whether your PDF includes the correct bleed area for professional printing.
Check whether content in your PDF maintains safe margins from the page and trim edges.
Check page dimensions, detect standard sizes like A4 and Letter, and identify mixed page sizes in your PDF.
Run a comprehensive preflight check on your PDF to see if it's ready for professional printing.
Learn before you print
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Default: 18 pt (6.35 mm)
Default: 9 pt (3.175 mm)
Default: 0.5 pt (hairline)
