How to remove metadata from a PDF with Adobe Acrobat?
Jul 21, 2025 am 12:42 AM!!!
After opening Adobe Acrobat, click Protect PDF in the Tools menu and select Delete Hide Data. Then upload your PDF file, and the system will automatically scan and list the clearable metadata types. Check the content you need to remove (such as author, creation time, etc.), and finally click "Clean Document" to complete the operation.

Cleaning metadata with Adobe Acrobat Pro
Adobe Acrobat provides a tool called "Delete Hidden Data", which is specially used to clean up various hidden information in PDFs, including metadata. This feature is found in Acrobat Pro's Tools menu.

The operation steps are as follows:
- Open a PDF file
- Click "Tools" in the top menu bar
- Find and open the Protect PDF or Delete Hide Data tool on the right
- Acrobat analyzes files and lists all data types that can be cleaned up
- Check the part you want to delete, such as the author, title, modification record, etc.
- Click "Clean Document" to save the processed file
This method is suitable for most standard PDF documents, but if your file is password protected, you need to unlimit your password before you can operate it.

Other situations where metadata may remain
Some PDFs may contain embedded objects, such as images, attachments, or other layer content, and these places may also contain additional metadata. At this time, the Delete Hidden Data tool may not automatically detect all content.
You can manually check the following points:
- Image properties: Right-click to see if the picture contains information such as shooting equipment, GPS, etc.
- Comments and tags: Delete unnecessary annotations, highlighting and other interactive elements
- Attachment: If other files are included, the original information may also be retained.
For this kind of situation, it is recommended to check the content item by item before running the cleaning process again to ensure that sensitive information is completely removed.
Alternative methods and precautions
If you don't have Adobe Acrobat Pro, you can also use some free tools to remove metadata, such as PDF-XChange Editor or online services (be careful about security). However, online tools are at risk of privacy breaches and are not recommended for handling important or sensitive documents.
Also note:
- Deleting metadata is an irreversible operation, and it is recommended to keep the original copy
- Some PDFs have complex structures, which may cause malformation after cleaning.
- If the document requires signature or authentication, it may destroy the signature validity after cleaning
Therefore, it is best to test one or two files before formal use to confirm that the effect is in line with expectations.
Basically that's it. Just remember to use the "Delete Hidden Data" function and pay attention to the file structure and alternatives, and you can remove metadata from PDF more safely.
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