How to Bulk Remove Embedded Attachments from PDF Files
Question details
The user is looking for a method or built-in command to bulk-process and remove embedded file attachments from multiple PDF documents simultaneously.

- Product
- Adobe Acrobat / PDF
- Device & OS
- not provided
- Scenario
- Cleaning up a large batch of PDF files by stripping out embedded attachments to reduce overall file size and remove unnecessary data.
- Observed behavior
- Adobe Acrobat lacks a native, simple bulk-processing command for removing attachments, requiring users to either manually delete them file-by-file or rely on complex custom scripts.
Before proceeding with the removal of embedded attachments, ensure you have a backup folder containing your original PDF files in case you need to recover the attached data later.
Manually Remove Attachments and Use 'Save As'
Since there is no native bulk removal tool, the most straightforward and reliable method for a moderate number of PDF files is to delete attachments manually and save the document as a new file.
Writing a custom script is an option for bulk processing, but for batches of around 100 files, manually processing them is often faster than spending days developing and testing a script.
Launch Adobe Acrobat or your preferred PDF editor and open the first PDF document containing the attachments.
Click on the paperclip icon located on the left-side navigation pane to reveal the Attachments panel.
Highlight all the listed files in the Attachments panel, right-click, and select 'Delete' (or press the Delete key on your keyboard).
Navigate to 'File' and click 'Save As' rather than standard 'Save'. Saving as a new file forces the application to rebuild the document structure and properly reduce the file size.

Use a Third-Party PDF Utility or Custom Script
For processing hundreds or thousands of files, manual deletion is impractical, and you will need to utilize a specialized bulk PDF tool or write a custom script.
Manage PDF Attachments Effortlessly in WPS Office
WPS Office includes a comprehensive built-in PDF editor that makes it incredibly simple to view, manage, and delete embedded attachments from your documents to keep file sizes fully optimized.
- 1. Open your PDF in WPS: Launch WPS Office and open your PDF document using the built-in WPS PDF editor.
- 2. Open the Attachment Pane: Click on the 'Attachment' paperclip icon located on the left-side navigation panel to display all embedded files.
- 3. Delete Unwanted Attachments: Select the specific attachments you want to remove, right-click them, and choose the 'Delete' option.
- 4. Save the Document: Go to 'Menu', select 'Save As', and save the file to create a new, optimized version of your PDF without the attachment bloat.

Frequently Asked Questions
Why does my PDF file size remain large after deleting attachments?
If you simply click 'Save' after deleting an attachment, the PDF software may just flag the data as deleted without actually removing it from the document structure. Always use 'Save As' to force the software to rewrite the document from scratch, which successfully drops the deleted data and reduces the file size.
Can I use Adobe Action Wizard to bulk delete PDF attachments natively?
Adobe Acrobat's Action Wizard does not feature a simple, built-in checkbox or command specifically for removing attachments. You would need to possess coding knowledge to write and execute a custom JavaScript within the Action Wizard to achieve bulk removal.
Are embedded PDF attachments safe to open?
Embedded files within PDFs can harbor malicious scripts or malware, functioning similarly to unsafe email attachments. You should only open embedded attachments from trusted senders and ensure your PDF reader's security settings are strictly configured.




