How do I make a scanned PDF searchable?

Open your scanned PDF in Acrobat. Go to 'All tools' > 'Scan & OCR' > 'In this file'. Select the pages and language, then click 'Recognize Text'. Acrobat will add a searchable layer.

What is the difference between a regular PDF and an OCR'd PDF?

Feature Regular PDF (image-only) OCR'd PDF (searchable). Text Search Cannot search for words Can search for words and phrases Text Selection Cannot select or copy text Can select and copy text Content Type Images of pages (like photos) Images with an invisible text layer File Size Often smaller if simple images Slightly larger due to text layer

Make Clauses Searchable in Adobe Acrobat — How-to & AI prompts

AI prompts

1 way to ask · copy any one

DBecome — “help me grow”We waste days when key clauses are trapped in image-only scans. Across the last ten disputes,…+

We waste days when key clauses are trapped in image-only scans. Across the last ten disputes, where did OCR fail us most (image quality, layout, handwriting), and recommend one scanning and ingestion habit the team must adopt so future signed docs are searchable and trustworthy.

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 scanned PDF file in Adobe Acrobat.
2
Go to the Tools menu.
3
Select Scan & OCR from the tools list.
4
Click Recognize Text and choose In This File.
5
In the settings panel, ensure PDF Output Style is set to Searchable Image.
6
Click Recognize to start the OCR process.
7
Save the PDF after OCR is complete.
Best practiceFor best OCR accuracy, scan your documents at 300 dpi and ensure the images are clear before running OCR.

In the appWith the API

After OCR completes, you can search, copy, and highlight text in your previously scanned PDF.

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

Glossary

words on this page

OCROCR stands for Optical Character Recognition. It is technology that turns images of text into real text you can search and copy.ExampleAfter scanning a paper invoice, OCR allows you to copy the vendor's name from the image.

Searchable Text LayerThis is an invisible layer of text added to an image-based PDF, allowing you to search for words.ExampleThe searchable text layer made it possible to find keywords within the scanned meeting minutes.

DPIDPI means dots per inch, and it tells you how clear an image is when it is scanned.ExampleA scanned photo saved at 300 DPI will usually contain more detail than the same photo at 72 DPI.

Who does this

3 roles

ArchivistResearch LibrarianRecords Manager

FAQ

about this task

Open your scanned PDF in Acrobat.
Go to 'All tools' > 'Scan & OCR' > 'In this file'.
Select the pages and language, then click 'Recognize Text'. Acrobat will add a searchable layer.

Renderable text means the page already has real text that a computer can read and search. OCR is designed to turn images of text into readable text, not to process text that is already there. If a page has renderable text, Acrobat will not run OCR because it's not needed and could cause problems. OCR only works on pages that are images, like photos of documents.

If your scanned document is blurry, the OCR might not work as well. It needs clear images of text to recognize characters correctly. For the best accuracy, it's recommended to scan documents at 300 dpi. A blurry scan means the text is harder for the software to 'read', leading to more errors in the searchable text.

Choosing the correct OCR language is very important because it helps the software recognize words and characters specific to that language. Different languages have different alphabets, special characters, and word structures. If you select the wrong language, the OCR might misinterpret words, leading to many errors and making the text less searchable or accurate.

Feature	Regular PDF (image-only)	OCR'd PDF (searchable)
Text Search	Cannot search for words	Can search for words and phrases
Text Selection	Cannot select or copy text	Can select and copy text
Content Type	Images of pages (like photos)	Images with an invisible text layer
File Size	Often smaller if simple images	Slightly larger due to text layer

Make Clauses Searchable

When to use it

AI prompts

How to do it

Glossary

The real tasks

Who does this

FAQ

Sources

Adobe help

When it fails