PDF Size Separator

Many pattern companies ship their PDFs with all sizes stacked on top of each other — 8 or more cutting lines per pattern piece, with tiny size numbers as the only way to tell them apart. This tool actually separates the sizes by analysing the vector paths in the PDF.

It finds every size label, determines which cutting lines belong to which size based on spatial proximity, and generates a new PDF containing only your size. The result is a clean pattern with single cutting lines — as if the pattern company had given you a personal copy.

This works with any PDF pattern that uses vector graphics (not scanned images) with size numbers printed along the cutting lines. Tested with:

• Merchant & Mills (Arbor, Landgate, etc.)
• Fibre Mood magazine patterns
• Burda Style A0 patterns
• Other brands with nested sizes and no PDF layers

If your pattern already has separate layers, use the PDF Layer Toggleinstead — it's simpler and works differently.

Use the A0 version if available. A0 files have fewer joins and cleaner paths than tiled versions.

Check the output. The algorithm works by proximity — occasionally a shared element (like a grainline near a label) may be incorrectly classified. Always compare key measurements against the original.

Grading between sizes? If you need size 40 at the bust and 44 at the hip, extract both sizes separately and use them side-by-side to draw your blended cutting line.