PDF Editing Issues

How to Manually Import XML or FDF Comments in Adobe Acrobat

Steve KSteve K Oct 28, 2026 868 views

Question details

The user needs to manually import shared-review comments stored in XML or FDF format into Adobe Acrobat when they do not load automatically.

Product
Adobe Acrobat
Device & OS
not provided
Scenario
Shared-review comments stored in XML files fail to load automatically during the review process.
Observed behavior
Comments do not sync or appear in the PDF document, requiring manual intervention to change file extensions and import the data.
Before you start

Ensure you make a backup copy of your original XML or FDF comment files before modifying their file extensions or importing data.

Solution 1Recommended

Rename XML to FDF and Import Manually

Use this method if your XML file is actually an Acrobat-compatible comment file (FDF/XFDF) that just needs the correct file extension for manual import.

Sometimes review systems save FDF data with an XML extension. Simply renaming the file extension allows Acrobat's manual import tool to recognize it. However, if the file contains standard XML and not FDF data, renaming won't convert it.

1
Locate and backup the file

Find your XML comment file on your computer and create a backup copy to prevent accidental data loss.

2
Change the file extension

Right-click the comment file, select 'Rename', and change the .xml extension to .fdf. Confirm the prompt warning you about changing file extensions.

3
Open your PDF

Launch Adobe Acrobat and open the target PDF document where you want the comments to appear.

4
Import the data file

Go to the 'Comments' pane on the right, click the 'Options' menu (three dots or gear icon), and select 'Import Data File'.

5
Load the comments

Select your newly renamed FDF file from the file explorer and click 'Open' to load the comments into your PDF.

Rename XML to FDF and Import Manually
Obtaining Valid Files: If renaming does not work, the file is not true FDF data. You must obtain a valid FDF or XFDF export directly from your shared review system.
Easy PDF Commenting

Manage PDF Comments Effortlessly with WPS Office

Avoid complex XML and FDF import issues by using WPS Office. WPS PDF offers built-in, user-friendly annotation tools that save your comments directly into the PDF document, ensuring seamless sharing across all platforms.

  1. 1. Open PDF in WPS Office: Launch WPS Office and open your target PDF document.
  2. 2. Access comment tools: Navigate to the 'Comment' tab located on the top ribbon menu.
  3. 3. Add annotations: Use the 'Highlight', 'Note', or 'Text Box' tools to add your annotations directly to the page.
  4. 4. Save the document: Click 'Save' to embed the comments directly into the standard PDF file for easy sharing.
Add text, highlights, and sticky notes without dealing with external data files.Fully compatible with standard Adobe PDF formats and Microsoft Office documents.Lightweight application that opens large PDFs quickly and reliably.
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Frequently Asked Questions

What is the difference between FDF and XFDF?

FDF (Forms Data Format) is a text file format used for exporting PDF form data and comments. XFDF is the XML-based version of FDF, which serves the exact same purpose but uses standard XML formatting.

Why won't my imported FDF comments appear in the correct location?

Comments may appear misplaced or fail to load entirely if the original PDF has been structurally modified, or if its layout differs from the version that was used during the initial shared review.

Can I export comments from Acrobat to share with others?

Yes. You can open the Comments pane in Acrobat, click the Options menu, and select 'Export All to Data File'. You can then share the resulting FDF or XFDF file with others to import into their copy of the PDF.

Does simply renaming an XML file to FDF always work?

No. Renaming only works if the file already contains Acrobat-compatible FDF data but was mistakenly saved with an XML extension. If the data structure is standard XML, it requires proper conversion or re-exporting from the source.