Add Crop Marks to PDF

Crop marks (also called trim marks or cut marks) are short lines printed in the corners of a sheet outside the final trim area. They show the press operator and finishing equipment exactly where to cut the printed sheet to reach the final document size. Without crop marks, trimming must be estimated by eye - leading to inconsistent results across the print run.

Bleedis the extra artwork that extends beyond the trim edge. When a printed piece has artwork reaching the very edge of the page (a "full-bleed" design), a small amount of additional image - typically 3 mm (⅛ inch) - must extend past the trim line. This ensures that slight variations in sheet placement and cutting do not leave a white border at the edge of the trimmed piece. Our add crop marks to PDF tool handles both crop marks and bleed in a single operation.

1. 1Upload your PDF: Drop or select the PDF file you want to prepare for print. The file is loaded in your browser using pdf-lib - no server upload required. The tool reads the existing page dimensions to position all marks correctly on every page.
2. 2Configure print specifications: Set the bleed amount (in mm, inches, or points), crop mark length, the offset gap between the trim edge and the start of the mark, and line weight. Optionally enable the dashed bleed box rectangle - a helpful visual guide for your printer.
3. 3Download the press-ready PDF:Click Add Crop Marks. The tool expands each page's MediaBox to accommodate the marks, draws four corner pairs of crop mark lines, and optionally draws the bleed box. The output PDF downloads immediately - named with a -crop-marks suffix.

• Bleed Amount: The industry standard is 3 mm (0.125 in / 8.5 pt) for most commercial offset and digital printing. Wide-format and packaging may require 5-6 mm. Enter 0 to add crop marks without a bleed allowance.
• Mark Length: Typically 8-12 mm. Shorter marks (6 mm) are used on small-format items like business cards; longer marks (15 mm) appear on large format and book production files.
• Offset from Trim: The gap between the trim edge and the inner end of the crop mark - typically 2-3 mm. This prevents the mark from interfering with the bleed artwork when the sheet is slightly misregistered on press.
• Line Weight: Commercial printing uses 0.25-0.5 pt crop mark lines. Heavier lines (1 pt) are appropriate for wide-format output where the marks must be visible at a distance from the cutting table.

All processing runs entirely in your browser - your PDF never leaves your device. The output is a standard PDF file with an expanded MediaBox, fully compatible with Adobe Acrobat, InDesign, professional RIP software, and all industry-standard PDF preflighting tools. The tool adds marks to all pages simultaneously. Encrypted or password-protected PDFs cannot be processed and will return an error - decrypt them first using our PDF Password Remover tool. For CMYK registration color output (required for some offset presses), use a desktop prepress application; this tool produces black (0,0,0 RGB) crop marks suitable for digital and wide-format printing.