Across my last [N=20] scanned packets and contract revisions, where does our document conversion and version control h…
Open the folder containing your PDF files and verify that the search index file (usually with a .pdx extension) is present.
Best practiceIf the .pdx file is missing, you may need to recreate the index using Acrobat's Catalog feature.
Ensure that the .pdx file and all referenced PDF files are in their original locations and have not been moved or renamed.
NoteMoving or renaming files can break the link between the index and the PDFs.
Open Adobe Acrobat and choose Edit > Advanced Search.
Select Show More Options if available, then choose Use Index and browse to select your .pdx file.
Attempt a search and observe if results are returned from all expected documents.
If the search index is not functioning, open the .pdx file in a text editor and check for broken or outdated file paths.
CautionEditing .pdx files directly is not recommended unless you have a backup.
If the index is still broken, recreate the search index using Acrobat’s Catalog feature by selecting Tools > Index > Full Text Index with Catalog.
Best practiceSome users report better results by rebuilding the index after moving all PDFs and the .pdx file into a single folder.
After rebuilding, repeat steps 3-5 to confirm the new index works as expected.
You can quickly check if Acrobat is using the correct search index by opening Advanced Search and verifying the selected .pdx file.
This runs in the Acrobat app - there is no separate API for this task.
A PDF index is like a special map of all the words in your PDF files. You should use it because it makes searching across many PDFs much faster. Without an index, Acrobat has to open and read each PDF file every time you search, which takes a long time for large collections.
Yes, if you add new PDFs, remove old ones, or change the text inside existing PDFs, you will need to update or rebuild your PDF index. The index only knows about the files and content that were present when it was last created. If you don't update it, new or changed information won't appear in your searches. Acrobat Pro's Catalog feature allows you to update an existing index, which is usually faster than building a completely new one.
A PDF index is much faster because it creates a pre-scanned map of all your documents. When you use regular search for many files, Acrobat has to open and read each file individually every time. The index lets Acrobat quickly look up results without opening every single file, saving a lot of time and computer power, especially for very large collections.