How to Batch-Insert Document JavaScript into PDFs in Acrobat Pro
Question details
The user needs a method to automate the insertion or replacement of document-level JavaScript in hundreds of PDF files.
- Product
- Adobe Acrobat Pro XI
- Device & OS
- not provided
- Scenario
- Using automation scripts to batch process multiple PDF files and inject custom JavaScript.
- Observed behavior
- When adding scripts using the addScript method, the script tends to execute immediately upon insertion, requiring a workaround to prevent unwanted execution during batch processing.
Before running any batch processing scripts, test your automation logic on a small folder of duplicate PDFs to ensure the script acts exactly as intended without modifying original documents.
Use Action Wizard and the addScript Method
Create a custom Action in Acrobat Pro that loops through a folder of PDFs and utilizes the addScript method to safely inject JavaScript.
You can accomplish this by using Adobe Acrobat Pro's Action Wizard in combination with the JavaScript API. The Document object features an addScript method specifically designed for embedding document-level scripts.
Because Acrobat evaluates scripts as soon as they are attached to the document structure, you must implement a conditional check within your script. This ensures the injected code remains dormant during the batch insertion process and only triggers during normal user operation.
Launch Adobe Acrobat Pro XI, navigate to the 'Tools' pane on the right side, and select 'Action Wizard' followed by 'Create New Action'.
From the 'Choose tools to add' panel, expand 'More Tools', select 'Execute JavaScript', and click the plus (+) button to add it to your action steps.
Click 'Specify Settings' on the added JavaScript step and input your injection code. Example: this.addScript('MyScript', 'if(!global.isBatching) { app.alert("File Opened"); }');
Under 'Files to be Processed', select 'Add Folder' to target the directory containing your hundreds of PDFs, save the Action, and then run it from the Action Wizard menu.
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- 1. Download WPS Office: Visit the official WPS website and download the free installation package for your Windows, Mac, or Linux device.
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Frequently Asked Questions
Why does my JavaScript execute right after I insert it using addScript?
Adobe Acrobat's JavaScript engine evaluates document-level scripts the moment they are appended to the document structure. You can prevent this by wrapping your script logic in an 'if' statement that verifies whether a global batch variable is active.
Can I replace an existing document-level script using Acrobat automation?
Yes, if you use the addScript method and provide a script name that already exists in the target PDF, Acrobat will seamlessly overwrite the existing script with your newly provided code.
Is it possible to remove JavaScript entirely from multiple PDFs?
Yes, you can use the Action Wizard combined with the removeScript('ScriptName') method in your batch process to safely target and delete specific scripts by name across multiple documents.
