Beautiful garments start with
precise lines.

A professional Illustrator extension tailored for patternmaking.
Automated seam allowances, precise Bezier curve measurement, and tech pack data extraction—all integrated into one powerful panel.

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Philosophy

ELiminating manual ambiguity,
bringing digital precision to patternmaking.

01

Mathematical Approach

Seam allowance generation and measurement use a unique algorithm that splits and analyzes Bezier curves in 100 steps. Even complex armholes are processed with absolute precision.

02

Reflecting the Patternmaker's Mind

Mirroring sharp corners, "V-shaped" hem processing, and more. We automate specific garment construction "rules" that generic offset tools simply can't handle.

03

Tech Pack Support

Efficiency doesn't end with drawing. Batch-analyze perimeter and area for multiple parts, instantly generating data tables for technical specifications on your document.

Features

Four Modules for Unmatched Efficiency

Module 01

Advanced "Seam Allowance" Automation

Simply enter values and click. From basic offsets to essential patternmaking features, we have it covered.

  • Sharp Corner Mirroring: Automatically handles sharp corners to ensure seam allowances don't "poke out."
  • Special "Hem" Mode: Select two points on a hem with the direct selection tool to create tapered seam allowances for folding instantly.
  • Automatic Corner Notches: Automatically draws 5mm notch lines at the corners of seam allowances.
SeamPro Allowance
All (Paths)
Hem Only
Base Allowance (mm):
Direction:
SeamPro Measurement & Ease
Measure
Notch
Analysis
[Ease Amount] 2.35 mm
L1: 152.00 / L2: 149.65
Module 02

Bezier Curve
"Smart Measurement & Ease Calculation"

Derived curve path length with high precision (100-step calculation), optimized for patternmaking workflows.

  • Ease Calculation: Select two paths to instantly calculate the difference (ease amount).
  • Segment Measurement: Select two anchor points to measure the exact length between them.
  • Direct Labels: Place measurement results as text directly on the artboard with one click. No more copy-pasting.
Module 03

Versatile "Registration Notches" & "Tech Pack Analysis"

Automating perpendicular calculations for curves, with data output features for industrial tech packs.

  • Multi-distance & Equal Division: Specify multiple positions (e.g., "50mm and 100mm") or "divide into 3 parts." Supports reverse direction.
  • 3 Notch Styles: Beyond standard lines, draw "V-style" or "U-style" notches for easier fabric cutting.
  • Component Analysis Output: Automatically generate a tab-separated table of "Name, Perimeter, Width, Height, and Area (m²)" for selected parts.
Add Notch
Dist:
Dir:
Type:
Divide:
Part Analysis Table

List dimensions for multiple parts

Demonstration

Intuitive Operation, Instant Calculation.

Play Demo Video

FAQ

Frequently Asked Questions

Q.

Which Illustrator versions are supported?

A. Support is confirmed for Adobe Illustrator CC 2019 and later (Mac / Windows). We unfortunately cannot guarantee operation on older versions like CS6.

Q.

Is installation difficult?

A. No, simply place the downloaded script files (.jsx) into your Illustrator's "Scripts" folder. A detailed manual (PDF) is included with your purchase.

Q.

Can I use it on multiple PCs?

A. A single license allows installation on up to 2 PCs used by the purchaser (e.g., an atelier desktop and a mobile laptop).

License

Permanent License / No Subscription

SeamPro Professional

Illustrator CC 2019+ / Mac & Windows

One-time payment
$59 $29

Special Launch Price (50% OFF!)

Currently available for $29 for early adopters (Regular price $59).
We would appreciate your feedback!

SeamPro Extension Modules (.jsx) Included
Commercial Use License Included
Free Minor Updates Included
Installation & Operation Manual (PDF) Included
Coming Soon!

*Currently unavailable before release.

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