How do I search for words in a single PDF document?

Open your PDF in Adobe Acrobat. Find the 'Search' toolbar or window. Type the word you want to find and press Enter. Acrobat will show you where the word is in that document.

If I have hundreds of PDF manuals, what is the best way to search them all quickly for a part number?

Use Adobe Acrobat Pro and open the 'Catalog' feature. Create a new PDF index for your entire collection of manuals. This will build '.pdx' and '.idx' files. Once the index is built, use the search function. Acrobat will now use this index to find the part number very quickly across all your manuals, saving you a lot of time compared to searching each file separately.

How is searching a single PDF different from searching with a PDF index?

Feature Searching Single PDF Searching with PDF Index (Catalog). Speed Good for one file, slow for many. Very fast for many files. Setup No special setup needed. Needs 'Catalog' in Pro version to build index once. Coverage Main text, layers, forms, signatures. Main text, comments, bookmarks, tags, metadata, attachments. Use Case Quick check in one document. Finding words across a large collection of documents.

Urgent Keyword Search in Adobe Acrobat — How-to & AI prompts

AI prompts

1 way to ask · copy any one

CDecide — “help me choose”I have a pile of scanned student essays and no searchable text. Tell me the quickest reliable…+

I have a pile of scanned student essays and no searchable text. Tell me the quickest reliable way to turn these scans into searchable files so I can pull relevant examples, and warn me about any OCR mistakes I should watch for in student handwriting. Give the exact steps I should run this afternoon.

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

How to do it

the tool · the steps · what to avoid

1
Open the PDF file that has an associated search index in Acrobat Reader.
Best practiceIndexed PDFs usually have a companion .pdx or .idx file in the same folder; make sure both are present for best performance.
2
Press Ctrl+Shift+F (Windows) or Command+Shift+F (Mac) to open the advanced search window.
3
In the search window, select All PDF Documents in and choose the folder containing the indexed PDFs.
NoteSelecting the folder ensures Acrobat uses the index for faster searching across multiple PDFs.
4
Enter your search term in the search box.
5
Click Search to begin searching the indexed PDFs.
CautionIf the index file is missing or not recognized, Acrobat will perform a slower full-text search instead.
6
Review the search results and click any result to jump to that location in the PDF.

In the appWith the API

When searching indexed PDFs, results appear much faster than with standard searches, especially across large document sets.

This runs in the Acrobat app - there is no separate API for this task.

Glossary

words on this page

PDF IndexA special file that helps you search many PDF documents very quickly.ExampleSearching for a keyword across a thousand legal documents is instant thanks to the PDF Index.

CatalogThe Acrobat tool that builds an index for searching many PDFs quickly.ExampleThe Catalog tool quickly indexed all project PDFs, allowing instant keyword searches across them.

Full-Text SearchLooking for words in all parts of a document, including the main text, comments, and other information.

Who does this

3 roles

Research AnalystLegal AssistantLibrarian

FAQ

about this task

Open your PDF in Adobe Acrobat.
Find the 'Search' toolbar or window.
Type the word you want to find and press Enter. Acrobat will show you where the word is in that document.

A PDF index is like a special map for your documents. It lists all the words and where they are found across many PDFs. When you search, Acrobat uses this map instead of reading every single page of every file. This makes finding your words much, much faster, especially when you have a large collection of documents.

Use Adobe Acrobat Pro and open the 'Catalog' feature.
Create a new PDF index for your entire collection of manuals. This will build '.pdx' and '.idx' files.
Once the index is built, use the search function. Acrobat will now use this index to find the part number very quickly across all your manuals, saving you a lot of time compared to searching each file separately.

Feature	Searching Single PDF	Searching with PDF Index (Catalog)
Speed	Good for one file, slow for many.	Very fast for many files.
Setup	No special setup needed.	Needs 'Catalog' in Pro version to build index once.
Coverage	Main text, layers, forms, signatures.	Main text, comments, bookmarks, tags, metadata, attachments.
Use Case	Quick check in one document.	Finding words across a large collection of documents.

You should use 'Catalog' to create a PDF index because it saves a lot of time when you have many documents. Searching each file separately is very slow. An index lets Acrobat find words across all your PDFs almost instantly. Also, the index covers more than just the main text; it includes comments, bookmarks, and other hidden information, so you find everything relevant.

Urgent Keyword Search

When to use it

AI prompts

How to do it

Glossary

The real tasks

Who does this

FAQ

Sources

Adobe help