How do I make a scanned PDF searchable?

Open your scanned PDF in Acrobat. Go to 'All tools' > 'Scan & OCR' > 'In this file'. Select your page range and language. Click 'Recognize Text'. Acrobat will add a searchable text layer to your document, allowing you to find words easily.

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

Feature Scanned PDF OCR'd PDF. Content Type An image of the document pages. An image with an invisible layer of searchable text. Searchable No, you cannot search for words. Yes, you can search, select, and copy text. Text Editable No, text is part of the image. Text can often be edited or copied after recognition.

Improve Scanning Front‑Line Standards in Adobe Acrobat — How-to & AI prompts

AI prompts

1 way to ask · copy any one

DBecome — “help me grow”Scanned beneficiary forms keep coming back incomplete and I’m spending time fixing them. Review…+

Scanned beneficiary forms keep coming back incomplete and I’m spending time fixing them. Review the last 50 filings and identify the two most common scanning problems juniors miss. Recommend one training step and one acceptance checklist item that would make junior advisors catch these issues before filing forever.

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 your scanned PDF in Adobe Acrobat.
2
Go to All tools and select Scan & OCR.
3
From the left panel, select Enhance Scans.
4
Adjust the image borders if needed by dragging the blue handles to tightly frame the document content.
5
Use the available enhancement options to deskew, adjust contrast, and remove background as needed for clarity.
Best practiceImproving contrast and removing background noise before OCR can significantly increase text recognition accuracy, especially for faded or uneven scans.
6
Click Apply to save the image enhancements.
7
Return to the Scan & OCR pane and select Recognize Text.
8
Choose In This File to run OCR on the current document.
9
Click Recognize Text to start the OCR process.
NoteIf the document was previously OCR'd, Acrobat may prompt to re-recognize text; confirm to proceed if needed.
10
Save the enhanced, OCR-processed PDF.

In the appWith the API

Enhancing the image before running OCR helps Acrobat recognize text more accurately in poor-quality scans.

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.

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.

Renderable TextRenderable text is text that a computer can already read and select, not just a picture of text.ExampleYou can easily copy and paste text from a PDF because it contains renderable text.

The real tasks

the one, listed here

Raise front-line scanning standards

FAQ

about this task

Open your scanned PDF in Acrobat.
Go to 'All tools' > 'Scan & OCR' > 'In this file'.
Select your page range and language.
Click 'Recognize Text'. Acrobat will add a searchable text layer to your document, allowing you to find words easily.

OCR fails if your PDF already contains 'renderable text,' meaning the text is already readable by the computer, not just an image. OCR is designed for image-only pages. If you get an error, it means the text is likely already searchable, and OCR is not needed for that specific page.

For the best accuracy in text recognition (OCR), you should scan your documents at 300 DPI. A higher DPI captures more detail, which helps the OCR software identify characters correctly. While 72 DPI is the minimum, 300 DPI significantly improves results.

Yes, OCR can work with documents in other languages. Before you start the text recognition process, you need to select the correct language for your document. This tells Acrobat which language to use for character recognition, improving the accuracy of the OCR results for non-English texts.

Feature	Scanned PDF	OCR'd PDF
Content Type	An image of the document pages.	An image with an invisible layer of searchable text.
Searchable	No, you cannot search for words.	Yes, you can search, select, and copy text.
Text Editable	No, text is part of the image.	Text can often be edited or copied after recognition.

Improve Scanning Front‑Line Standards

When to use it

AI prompts

How to do it

Glossary

The real tasks

Who does this

FAQ

Sources

Adobe help

When it fails