Other PDF Issues

How to Move an Acrobat PDX Index Without Corrupting It

Amos GikundaAmos Gikunda Nov 3, 2026 869 views

Question details

The user needs to know how to properly move an Adobe Acrobat Catalog PDX index without breaking the file links or corrupting the index structure.

How to Move an Acrobat PDX Index Without Corrupting It
Product
Adobe Acrobat
Device & OS
not provided
Scenario
Transferring a collection of indexed PDFs and their corresponding search index (PDX) to a new location, such as a thumb drive or an external hard drive.
Observed behavior
If the files are moved incorrectly, the index fails, becomes unavailable, or corrupts, requiring a complete rebuild of the catalog.
Before you start

Ensure you have enough storage space on your target destination to accommodate both the source PDF files and the entire index directory structure.

Solution 1Recommended

Move the Indexed PDFs and the Complete Index Structure Together

To prevent corruption, you must maintain the exact relative folder structure between the indexed PDF documents and the generated index files when copying them to a new location.

Acrobat Catalog relies on relative paths to link the PDX index file to the indexed PDF documents. Moving only the PDX file, leaving out the IDX folder, or changing the folder hierarchy will break these paths, rendering the index useless.

1
Locate the source directory

Open your file explorer and navigate to the original parent folder containing your indexed PDF documents.

2
Identify all index components

Within or alongside the PDF folder, locate the index files generated by Acrobat Catalog. This includes the .pdx file, the .log file, and the entire folder containing the .idx files.

3
Copy the entire parent folder

Select the parent directory that houses both the PDF collection and all associated index files to ensure the relative locations remain identical. Right-click and select Copy.

4
Paste to the new destination

Navigate to your destination drive (e.g., thumb drive or network shared drive), right-click, and select Paste. Do not rename any internal subfolders separating the PDX file from the PDFs.

Move the Indexed PDFs and the Complete Index Structure Together
Folder Hierarchy Warning: If you only copy the PDX file without the accompanying IDX folder and source PDFs, the search index will not function and will prompt you to rebuild it from scratch.
Efficient PDF Management

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Avoid the hassle of complex PDX index files and fragile folder structures. WPS Office provides a robust PDF reader and editor with powerful built-in search capabilities, allowing you to manage large PDF documents effortlessly.

  1. 1. Open your PDF in WPS Office: Launch WPS Office and open your PDF document directly without needing to load external index files.
  2. 2. Use the built-in search function: Press Ctrl + F to bring up the search bar and quickly locate keywords, phrases, or specific data points across the entire document.
  3. 3. Manage your PDF pages easily: Navigate to the Page tab to split, merge, or reorganize your PDF documents easily without worrying about corrupting relative file paths.
Fast and accurate text search across large PDF filesNo complex catalog or index (PDX/IDX) file dependencies to manageHigh compatibility with standard PDF formatsLightweight application that operates smoothly without slowing down your system
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Frequently Asked Questions

Can I move just the PDX file to share the search index?

No, the PDX file alone is insufficient. You must include the accompanying LOG file, the entire IDX folder, and the actual PDF documents in their original relative structure to maintain a functional search index.

Why does Acrobat prompt me to rebuild the index after moving it?

This usually happens because the relative path between the PDX file and the source PDFs has changed, or the accompanying IDX folder is missing from the new location. Rebuilding is required to re-establish these file links.

What happens if I rename the folder containing the indexed PDFs?

Renaming the top-level parent folder usually preserves relative paths and keeps the index intact. However, renaming the internal subfolders that separate the PDX file from the PDF documents will break the index.

What are the IDX files in the Acrobat Catalog folder?

The IDX files contain the actual searchable database data generated by Acrobat Catalog. The PDX file simply acts as a master pointer to these IDX files and the original source PDFs.