Opacity Randomizer
Script for Adobe Illustrator
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Overview
Opacity Randomizer is a powerful Adobe Illustrator script designed to help you randomly adjust the opacity of selected objects with ease, all while providing a real-time preview. Whether you’re working with individual items or entire groups, this script offers the flexibility to apply random opacity values dynamically across your selection.
Customize the opacity range with intuitive sliders and input fields, ensuring precise control over the effect. Perfect for adding depth and randomness to complex compositions, Opacity Randomizer ensures a smooth and non-destructive workflow.
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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.
- Open your document and go to File > Scripts > Opacity Randomizer to launch the script.
- When the script runs, a dialog box appears with the following components:

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➊ Opacity Range
The Opacity Range menu is a core component of the Opacity Randomizer script’s user interface. It allows you to define the range of opacity values that will be applied to the selected objects or groups. This menu ensures precise control over the randomization process by letting you set both the minimum and maximum opacity values.
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1.1 Minimum Opacity
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Functionality:
Sets the lowest possible opacity value (0%–100%) that can be randomly applied to the selection. -
Usage:
Adjust the slider to define the minimum opacity visually or enter a numeric value in the input field for exact control.
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1.2 Maximum Opacity
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Functionality:
Sets the highest possible opacity value (0%–100%) that can be randomly applied to the selection. -
Usage:
Adjust the slider to define the maximum opacity visually or enter a numeric value in the input field for precise adjustments.
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ⓘ Tip: Use the Up and Down arrow keys to increment or decrement the value by 1%. Hold Shift while using the arrow keys to adjust by 10%.
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➋ Randomization Target
The Opacity Randomizer script allow you to choose how the random opacity values are applied to the selection. These two options give you control over whether the opacity is applied to individual objects or to entire groups, enabling flexibility for various design needs.
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2.1 Randomize opacity for each individual item
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Functionality:
• Applies random opacity values individually to all objects within the selection.
• If the selection includes groups, it traverses into the groups and randomizes the opacity of each item inside.
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Best For:
• Creating unique, varied opacity effects across all objects.
• Adding randomness to complex compositions with multiple elements.
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2.2. Randomize opacity for groups as a whole
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Functionality:
• Applies a single random opacity value to each group in the selection.
• The internal opacity of the objects within the group remains unchanged.
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Best For:
• Adjusting the overall transparency of grouped elements while preserving their internal opacity relationships.
• Ensuring groups maintain a cohesive visual appearance.
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ⓘ Note: Switching between the radio buttons automatically restores the original opacity of the selection and reapplies the randomization based on the chosen mode.
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➌ Buttons Functionality
OK and Cancel buttons in the Opacity Randomizer script provide essential actions to finalize or cancel the randomization process. These buttons ensure a seamless and user-friendly workflow by allowing you to confirm changes or revert to the original state without hassle.
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Finalize with OK Button
Purpose:
- Finalizes the opacity randomization process and applies the changes permanently to the selection.
Functionality:
- When clicked, it confirms the current random opacity settings (as defined by the sliders and radio buttons) and exits the script.
- The applied randomization becomes part of the document, replacing the original opacity values.
Best For:
- Completing the randomization process when you are satisfied with the changes.
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Revert with Cancel Button
Purpose:
- Discards all changes made during the session and restores the original opacity values.
Functionality:
- When clicked, it reverts all objects to their original opacity values and exits the script.
- No changes will be applied to the document.
Best For:
- Undoing any changes and maintaining the original state of the design.
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➍ Additional Features
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Real-Time Update: As you adjust the sliders or input fields, the script immediately applies the changes to the selection, allowing you to preview the randomized opacity effect.
Open User Guide Button: Provides quick access to detailed instructions or helpful resources related to the script.
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Whether you’re adding subtle transparency effects or creating dynamic opacity variations, this script simplifies the process with precision and flexibility.
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