Adjust Opacity by Percentage

Script for Adobe Illustrator

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Description

The Adjust Opacity by Percentage script is an Adobe Illustrator extension that allows users to modify the opacity of selected objects by a percentage of their current opacity values. This script provides a user-friendly interface with real-time preview capabilities, making it easy to adjust opacity settings with precision.

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Key Features:

Adjust opacity as a percentage (0-200%) of the original opacity value.
Real-time preview of opacity changes.
Works with multiple selected objects simultaneously.
Handles various object types (paths, compound paths, text frames, and groups).
Interactive slider and manual input options.

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Installation

1. Download the Adjust Opacity by Percentage.jsx script file.

2. Place the script in your Adobe Illustrator Scripts folder:

⮑ Mac: /Applications/Adobe Illustrator <Version>/Presets/<Language>/Scripts

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

3. Restart Adobe Illustrator if it's already running.

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Using the Script:

Open Adobe Illustrator and open your document.
Select the object(s) whose opacity you want to adjust.
Run the script by navigating to File > Scripts > Adjust Opacity by Percentage.
Use the dialog interface that appears.

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Adjusting the dialog window

Slider: Drag left to decrease opacity percentage or right to increase (up to 200).
Input field: Manually enter a percentage value.
Preview: Toggle the checkbox to see changes in real-time.

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Fine-tune with keyboard shortcuts:

Use Up/Down arrow keys to adjust by 1%.
Hold Shift + Up/Down arrow keys to adjust by 10%.
Press Enter to apply changes.
Press Escape to cancel and revert to original opacity.

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Apply or Cancel:

Click "OK" to apply the opacity changes.
Click "Cancel" to revert to the original opacity values.

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Opacity Percentage: 50%

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Opacity Percentage: 200%

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Additional Notes:

The percentage value represents how much of the original opacity to retain (e.g., 50% will make objects half as opaque as they originally were).
Values above 100% will increase opacity proportionally (up to 200%).
The script maintains the relative opacity differences between objects.
For more information, visit the script guide by clicking the ⏼ icon.

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Conclusion

The Adjust Opacity by Percentage script streamlines your workflow by providing intuitive control over object opacity in Adobe Illustrator. Whether you need subtle transparency adjustments or dramatic opacity changes, this tool offers precision and flexibility through its percentage-based approach.

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#Color

Adjust Opacity by Percentage

Version: 1.0.0

Updated: May 6, 2025

Download Adjust Opacity by Percentage

1.0.0 – Initial release.
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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 Adjust Opacity 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 Opacity 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 Opacity by Percentage script to run it.
5. The Adjust Opacity 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.

🅰 Locating the Scripts Folder
To install a Adjust Opacity 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 Opacity 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.
ㅤ
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 Opacity by Percentage script to run it.
5. The Adjust Opacity 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?

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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