I need to teach Jamie how we scan, name, and index documents so auditors can find anything in a day. I’m nervous I’ll …
Open the scanned PDF file in Adobe Acrobat.
Go to the Tools menu.
Select Scan & OCR from the tools list.
Click Recognize Text and choose In This File.
In the settings panel, ensure PDF Output Style is set to Searchable Image.
Click Recognize to start the OCR process.
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.
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.
| Feature | Image-Only PDF | Searchable PDF |
|---|---|---|
| Content | Just a picture of the document | Picture of the document with a hidden text layer |
| Search | Cannot search for words | Can search for words and copy text |
| OCR | Has not had OCR applied | Has had OCR applied to recognize text |
This message means the page already has real text, not just an image of text. Acrobat's text recognition feature is designed for pages that are only pictures. It tries to add a new text layer, but if one already exists, it stops. You can check if the page already has text by trying to select words on it.
If your scanned document is blurry, the text recognition (OCR) will likely not work well. Blurry images make it hard for Acrobat to identify the letters correctly. Always try to get the clearest scan possible for the best results.
The main purpose of recognizing text in a scanned PDF is to make the document searchable and editable. When you scan a paper document, it becomes an image. Text recognition (OCR) converts that image text into actual text data. This allows you to search for words, copy text, and interact with the document like a regular digital file.