Adjust Stroke Weight by Percentage

Adjust Stroke Weight by Percentage

Script for Adobe Illustrator

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Overview

The Adjust Stroke Weight by Percentage script for Adobe Illustrator allows users to proportionally scale the stroke weight of multiple selected objects. It provides a user-friendly dialog where you can input a percentage or use a slider to increase or decrease stroke widths. Additionally, the script offers an option to apply an average stroke width across all selected objects.

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Key Features

  • Adjust stroke weight by a user-defined percentage.
  • Real-time preview with a responsive slider and input field.
  • Option to apply an average stroke width to all selected objects.
  • Supports individual objects and groups, paths and compound paths, and text frames with stroke.
  • Undo-safe: Cancelling restores the original stroke widths.
  • Keyboard shortcuts for quick interaction.

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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

  • Open a document in Adobe Illustrator.
  • Select one or more objects that have a stroke applied.
  • Launch the script: go to File > Scripts > Adjust Stroke Weight by Percentage.
  • A dialog will appear with stroke adjustment options.

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➊ Adjust Stroke Weight

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Selection Requirements

  • Select at least one object with visible strokes.
  • Supports multiple objects, groups, paths, compound paths and text frames.
  • Non-stroked objects within the selection will be ignored.

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Using Percentage Controls

  • Slider: Drag horizontally for quick adjustments
  • Input Field: Type exact percentage (e.g., "200" %)
  • Arrow Keys: Use ↑/↓ arrows for 1% increments (Hold Shift for 10% increments).

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➋ Average Stroke Feature

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Enable 'Apply average stroke width to selection' checkbox to unify all strokes to the calculated average.

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➌ Confirm or Cancel Changes

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Finalizing Changes

  • OK Button: Apply changes permanently (Enter).
  • Cancel Button: Revert to original strokes (Esc).
  • User Guide: Click the ⏼ icon at the bottom right to access the online user guide.

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Overall, Adjust Stroke Weight by Percentage is a perfect tool for designers needing precise stroke scaling in bulk.

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Adjust Stroke Weight by Percentage

Version: 1.0.0

Updated:

Download Adjust Stroke Weight by Percentage

    • 1.0.0 – Initial release.

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    Tested on MacOS:

    • Adobe Illustrator 2023 (27.0)
    • Adobe Illustrator 2024 (28.1)
    • Adobe Illustrator 2025 (29.0.1)

  • 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

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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 Adjust Stroke Weight by Percentage.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 Adjust Stroke Weight by Percentage.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 Adjust Stroke Weight by Percentage script to run it.
    5. The Adjust Stroke Weight by Percentage 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?

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