Cropdragon v1.0.1
Download Cropdragon v1.0.1, a powerful Premiere Pro extension that automatically applies the Crop effect along alpha channels. This intelligent tool reads the alpha channel of selected clips and applies optimal top, bottom, left, and right cropping—perfect for Essential Graphics, Photoshop files, PNGs, TIFFs, and any footage containing alpha channel information.
Extension for Premiere Pro that Automatically apply Crop effect along alpha channel.
Key Features of Cropdragon v1.0.1:
- Auto Crop: Each click crops alpha channel gaps in forward order; Shift+Click reverses direction
- Alpha-Aligned Cropping: Opt(Alt)+Click crops precisely along the alpha channel boundaries
- Reset Function: ⌘(Ctrl)+Click instantly sets crop effect values to zero
- Numeric Input: Click any value to enter custom numbers with support for four arithmetic operations
- Precise Adjustments: Use up/down keys for ±1 adjustments; Shift+up/down for ±10
- Mouse Drag Control: Drag values up/down or left/right for intuitive adjustments
- Link System: Click link lines to link left/right, top/bottom, or all four sides with unified values
- Flexible Units: Switch between pixels (px) or percentage (%) display units
- Add Crop Effect: Quickly add crop effect to selected clips with keyboard shortcuts
- Flip Controls: Horizontal Flip swaps left/right values; Vertical Flip swaps top/bottom
- Reset Alpha Data: Dedicated button resets temporarily stored alpha channel information
- Delete Function: One-click removal of applied crop effects
- Customizable Interface: Settings panel with multiple layout options (All/Horizontal/Vertical)
- Color Customization: Choose from five interface colors with optional persistent color icons
Perfect For:
- Video editors trimming transparent elements in the timeline
- Motion graphics artists working with layered Photoshop files
- Editors preparing graphics with precise alpha channel boundaries
- Anyone needing quick, automated cropping of alpha-enabled footage
- Post-production workflows requiring efficient layer cleanup
System Requirements:
- Adobe Premiere Pro 2022, 2023, or 2024
- Windows 10/11 (64-bit) or macOS
- 4GB RAM minimum (8GB+ recommended)
- 50MB available disk space
- Works with clips containing alpha channels (Essential Graphics, PSD, PNG, TIFF, etc.)
Version 1.0.1 Updates (July 25, 2024):
- First release on aescripts platform
- Initial public version with complete feature set
Cropdragon is an extension that uses PremierePro’s standard effect “Crop”. Get the alpha channel of the clip and apply the best top/bottom/left/right crop. Essential Graphics, Photoshop, PNG, TIFF, etc., can be used if the clip has an alpha channel.
Features

1. Motion Crop / Crop Effect
Clicking this area will switch the operation target to Motion Crop/Crop Effect.
2. Convert Crop
Swaps the values of the Motion Crop and Crop effect.
3. Auto Crop
Each click will crop the alpha channel gap in forward order. Shift + click to crop in reverse order. Opt (alt) + click to crop along the alpha channel.⌘(Ctrl) + click to set the value of the crop effect to 0.
4. Numeric Values
Clicking on a number allows you to enter any value. Four arithmetic operations are also supported. Use the up/down keys to adjust ±1, and with Shift key to adjust ±10. It can also be adjusted by mouse dragging (up/down or left/right) of the values.
5. Link
Clicking the link line several times will set the link to left/right, top/bottom, or top/bottom/left/right and adjust the crop by the same value.
6. Unit
You can choose the display unit from px (pixels) or % (percent).
7. Add Crop Effect
Adds a Crop effect to a selected clip. Opt(alt) + click to crop top/bottom/left/right along the alpha channel.
8. Reset to Default
Set the value of the applied crop effect to 0.
The “Reset to Default” button allows you to reset the alpha channel information temporarily stored in Cropdragon. If Auto Crop no longer works, try deleting the effect once or clicking this button.
9. Delete
Deletes the applied crop effect.
10. Horizontal Flip
Swaps the left and right values of the applied crop effect.
11. Vertical Flip
Swaps the top and bottom values of the applied crop effect.
12. Settings
Click to open the settings window.
Layout Settings

Select a layout from All, Horizontal, and Vertical.
Click the icon to select the functions that will be displayed when Horizontal or Vertical layout is selected.
You can choose from five different colors.
If you check the Color Icon checkbox, the icon will always be displayed in the selected color.

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