Squircle Generator

Squircle Generator

Script for Adobe Illustrator

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Functionality

This script creates a squircle shapes in Adobe Illustrator—a smooth blend between a square and a circle. Unlike a standard rounded rectangle, a squircle maintains a consistent curvature that transitions seamlessly between the straight edges and rounded corners, resulting in a more natural and aesthetically pleasing shape. 

This tool offers precise control over size, roundness, fill color, and stroke properties, allowing designers to create custom squircles with visual perfection.

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Squircle Shape (left) vs Rounded Rectangle (right)

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Features

  • Customizable Corner Roundness: Adjust the roundness factor to control how close the shape is to a square or a circle.
  • Dynamic Sizing: Define width and height to generate squircles of any size.
  • Flexible Color Control: Set the squircle’s fill color using Hue, Saturation, and Lightness (HSL) sliders.
  • Precision with Bezier Curves: Uses mathematically optimized Bezier curves to ensure smooth and accurate shaping.

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Installation

  • Place the script in your Illustrator Scripts folder:

    ⮑ MacOS:     /Applications/Adobe Illustrator <Version>/Presets/<Language>/Scripts
    ⮑ Windows: C:\Program Files\Adobe\Adobe Illustrator <Version>\Presets\<Language>\Scripts

  • Restart Adobe Illustrator to load the script into the File > Scripts menu.

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Using the Script

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Launch the Script

  • Open Adobe Illustrator and create or open a document.
  • Ensure the active layer is unlocked and visible.
  • Go to File > Scripts > Squircle Generator.
  • Upon running, a dialog window will appearю

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Size Adjustment

  • Use the slider to adjust from 50 to 1000 pixels.
  • Or enter a specific value in the input field.
  • Changes appear in real-time preview.

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Roundness Control

  • Adjust using slider between 0 and 100.
  • Lower values create more star-like shapes.
  • Middle values create more square-like shapes.
  • Higher values create more circular shapes.
  • Enter precise values in the input field.

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Stroke Settings

  • Set the stroke weight (thickness) using the scrollbar (0-200 points).
  • Click on the "Stroke Color" swatch to open the color picker and select your desired stroke color.

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Fill Color

  • Click on the "Fill Color" swatch to open the color picker.
  • Select any color from Adobe's standard color picker.

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Apply the Shape

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  • Click OK button to create the final squircle.
  • Click Cancel button to abort and remove the preview.
  • The final shape will be centered on the active artboard.

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Roundness 33, 50, and 66

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Additional Features

  • Real-time preview updates as you adjust settings.
  • Automatic zoom to fit the shape in the window.
  • Help tooltips for each control.
  • Access user guide by clicking the ⏼ icon at the bottom right of the dialog.

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Use Arrow Keys for Precision

  • Press Up / Down to adjust by 1 unit.
  • Hold Shift + Up / Down to adjust by 10 units.

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This powerful tool streamlines the creation of perfectly balanced squircles, saving time and ensuring mathematical precision in your designs.

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Squircle Generator

Version: 1.0.6

Updated:

Download Squircle Generator

  • 1.0.0 – Initial release.
    1.0.1 – Resolved layer permission handling to prevent errors on locked/hidden layers.
    1.0.2 – Stroke Options: Added stroke weight control with customizable thickness.
    1.0.3 – Color Controls: Replaced HSL sliders with direct color picker buttons for both fill and stroke colors.
    1.0.4 – UI Improvements: Replaced sliders with scrollbars for more precise control.
    1.0.5 – Visual Feedback: Color preview swatches for both fill and stroke colors.
    1.0.6 – Better Zoom: Adjusted zoom level to better fit created shapes in the viewport.

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    Tested on MacOS:

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    • Adobe Illustrator 2023 (27.0)
    • Adobe Illustrator 2024 (28.1)
    • Adobe Illustrator 2025 (29.0)

  • Supported Versions:

    • Compatible with Adobe Illustrator CS6 and later, including Adobe Illustrator CC versions.

    Operating Systems:

    • Works on both macOS and Windows platforms.

  • End User License Agreement (EULA)

    Last Updated: 21.12.2024

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    This End User License Agreement (“Agreement”) is a legal agreement between you (“User” or “Licensee”) and Samolevsky.com (“Licensor”) regarding the use of the Adobe Illustrator scripts (“Software”). By downloading, installing, or using the Software, you agree to be bound by the terms of this Agreement.

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    1. Grant of License

    Licensor grants the User a non-exclusive, non-transferable, and revocable license to use the Software in accordance with this Agreement.

    • Free Software: If the Software is provided for free, you may use it for personal or commercial purposes without payment, subject to the restrictions outlined in this Agreement.
    • Paid Software: If the Software is provided for a fee, you may use it only after payment has been made in full.

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    2. Usage Rights

    You are permitted to:

    • Install and use the Software on devices you own or control.
    • Use the Software in your personal or commercial projects, subject to compliance with this Agreement.

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    3. Restrictions

    You may NOT:

    • Reverse engineer, decompile, or otherwise attempt to discover the source code, underlying ideas, or algorithms of the Software.
    • Reuse, incorporate, or integrate any portion of the Software into any other software, product, or project, except as expressly permitted by the Licensor in writing.
    • Resell, redistribute, or share the Software, whether in its original or modified form, without prior written consent from the Licensor.
    • Claim ownership of the Software or its underlying code.
    • Use the Software in any way that violates applicable laws or regulations.

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    4. Ownership

    The Software and all intellectual property rights therein remain the exclusive property of the Licensor. This Agreement does not transfer ownership of the Software or any intellectual property rights to the User.

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    5. Disclaimer of Warranties

    THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE LICENSOR BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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    6. Limitation of Liability

    To the maximum extent permitted by law, Licensor shall not be liable for any damages, including but not limited to direct, indirect, incidental, special, or consequential damages, arising out of or related to the use or inability to use the Software.

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    7. Termination

    This Agreement is effective until terminated. Licensor may terminate this Agreement immediately if you breach any term of this Agreement. Upon termination, you must cease all use of the Software and destroy any copies in your possession.

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    8. Updates and Support

    Licensor is not obligated to provide updates, support, or maintenance for the Software. However, updates may be provided at the sole discretion of the Licensor.

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    9. Governing Law

    This Agreement shall be governed by and construed in accordance with the laws of the State of New York, without regard to its conflict of law principles.

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    10. Entire Agreement

    This Agreement constitutes the entire agreement between you and the Licensor concerning the Software and supersedes all prior or contemporaneous understandings regarding such subject matter.

    By using the Software, you acknowledge that you have read this Agreement, understand it, and agree to be bound by its terms.

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    For any questions or concerns regarding this Agreement, please contact us at hello@samolevsky.com

Required Software

Adobe Illustrator

Learn more

Adobe Illustrator is a professional vector graphics software developed by Adobe Inc. It is widely used by designers, illustrators, and artists for creating a variety of digital artwork, including logos, icons, illustrations, typography, and complex design layouts. Illustrator is known for its precision and scalability, allowing users to create high-quality graphics that can be resized without losing clarity. Its features include powerful drawing tools, customizable brushes, advanced typography options, and seamless integration with other Adobe Creative Cloud applications. Illustrator is a go-to tool for creative professionals working on projects for print, web, and multimedia platforms.

  • 🅰 Locating the Scripts Folder

    To install a Squircle Generator.jsx script in Adobe Illustrator, you need to place it in the correct directory where Illustrator
can recognize it. Follow these steps to locate the Scripts folder:

    1. MacOS:
      Open Finder and navigate to:
      Applications/Adobe Illustrator <Version>/Presets/<Language>/Scripts
    2. Windows:
      Open File Explorer and navigate to:
      C:\Program Files\Adobe\Adobe Illustrator <Version>\Presets\<Language>\Scripts
    3. Replace <Version> with your Adobe Illustrator version (e.g., 2025).
    4. Replace <Language> with your language folder (e.g., "de_DE" for German, "en_US" for English).

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    🅱 Installing the Script

    1. Copy the Script File: Copy the Squircle Generator.jsx file to the Scripts folder located in the path above.
    2. On some systems, you may need administrator permissions to modify the Scripts folder.
    3. Restart Adobe Illustrator: To refresh the scripts menu, close and reopen Adobe Illustrator.

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    Explore our complete guide to mastering Adobe Illustrator scripts.

    1. Open Adobe Illustrator and ensure a document is active.
    2. Go to the top menu bar and select File > Scripts.
    3. If the script is installed in the Scripts folder, it will appear in the dropdown list.
    4. Click the Squircle Generator script to run it.
    5. The Squircle Generator script will execute, and any dialog boxes or results will appear based on the script’s functionality.

    ☻ Before running any scripts, it’s strongly advised to save your work — especially when working with complex or large documents.

Got questions?

Need help or have an idea to share? We’d love to hear from you! Whether you have questions, found a bug, have a feature request, or just want to share your feedback, reach out to us—we’re here for you! 

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