1. Measure the Space You Can Actually Use
Measure the card panel, sign area or usable face of the pumpkin. Leave a border for tape and handling. Record the target in millimetres or centimetres: 100 mm is 10 cm. A surface's outside width is not necessarily the space available for the design.
Decide what you are measuring. A library PDF places the complete pattern in a 150 mm square, while the drawing can occupy less of that square. Use the square for a quick placement proof; measure the visible drawing separately if its exact width matters.
2. Scale an Unchanged PDF by a Percentage
For a PDF that needs only uniform scaling, use this calculation: print percentage = target width ÷ current width × 100. Apply the same definition of width on both sides. Scaling the 150 mm library square to 100 mm gives about 66.7%; leaving it at 150 mm uses 100%; a 180 mm square uses 120%.
After scaling, the 25 mm test line changes too. At 80% it should measure 20 mm, not 25 mm. Check the page preview for clipped artwork or marks. Adobe documents Custom Scale for PDF printing; use an equivalent explicit percentage in your viewer. Enlarging an entire page can exceed the printer's usable area.
3. Use the Editor for a New Artwork Width
Choose Customize on the pattern page to open its exact source artwork. The Leafy Sprig width example opens that source in the editor. Choose Bold from the style previews, then review the generated cut mask in the print workflow before exporting; importing a template still goes through image processing and may change fine connections.
In the export panel, enter Width (cm) and choose A4 or Letter. A 12 cm width is 120 mm. The editor calculates the artwork height from its aspect ratio and shows the sheet count per layer. Registration marks are outside the artwork width. A free account downloads a single-page PDF per layer; Pro supports larger tiled output. See the current plans for export access.
4. Recheck Bridges After Reducing the Design
A 2 mm connection becomes 1 mm when you print at half size. The same change affects petal gaps, letter counters and narrow stems. A digitally connected shape can still tear in the material. Cut the smallest feature on scrap before reducing a detailed pattern further.
When the overall size fits but a connection is weak, change the bridge or simplify that detail rather than enlarging the entire design again. Read how to repair bridges. For an oversized print, use the page-alignment guide, and keep every layer at the same scale.