How to make a PDF searchable

Key Takeaways

• A searchable PDF is one where the text can be selected, copied and found with Ctrl+F.
• Scanned documents are images until OCR adds a text layer underneath them.
• OCR PDF makes a scan searchable while leaving the original page appearance untouched.
• Clear scans at 300 DPI or higher give the most accurate results.
• Once the text layer exists you can also summarize or translate the document.

While most PDFs have text that is easy to copy and paste, you may come across some files that do not have selectable text. This is common for scanned PDFs, making it difficult to find keywords and navigate the file.

Use this free OCR PDF text recognition tool to convert PDFs into searchable documents. This guide will show you how to easily search and copy text from a PDF even if the text is not selectable.

Tip: Download the iLovePDF Desktop App for access to the tool offline, and the iLovePDF Mobile App to take advantage of the tool on the go. 

What is OCR?

OCR stands for “Optical Character Recognition”. OCR recognizes the text contained inside of digital images by scanning them to create searchable and copy-ready text.

Have you ever wanted to copy or search text from inside a scanned PDF, image file, or read-only PDF? That’s where OCR comes in.

iLovePDF OCR software

At iLovePDF, we've integrated OCR technology into various PDF tools to make it easier and more accurate for you to convert, scan, and manage PDF files. This integration has recently been enhanced with improved AI models for better text recognition, especially on low-quality scans and complex layouts.

Use OCR technology with our OCR PDF tool to scan PDF to text, creating searchable text from PDF that you can also copy.

The PDF to Word converter creates an editable Word document from PDF files. Create an iLovePDF account to enable the OCR feature and get the highest accuracy on scanned or image-based PDFs. With Premium you get higher conversion limits and access to even more tools, features, and work offline.

Need a mobile OCR scanner? Download the iLovePDF Mobile App and use the OCR Text Recognition tool to use this technology on your mobile devices. You can also use our Scan to PDF tool to digitize paper documents directly from your mobile device, then apply OCR to make them searchable.

Once your PDF is searchable, you can also summarize it to pull out the key points, or translate it into another language. Both tools rely on the text layer that OCR just added.

How do I make a scanned PDF searchable?

To make a scanned PDF searchable, upload it to OCR PDF and select the document language. The tool reads the text in the page images and adds an invisible text layer underneath, so the document looks identical but becomes fully searchable.

Need to know how to search for a word in a PDF? Quickly scanning a large number of PDF pages is an efficient way to work or study by saving yourself from reading the whole document.

This guide shows you how to make PDF text searchable by using the online OCR PDF scanner to convert PDFs with non-selectable text into searchable PDF files.

How to copy text from a PDF 

Do you want to copy and paste text from a text-restricted or scanned PDF? You might have found the perfect content, but if a PDF is read-only or an image scan then your copy options are limited. 

Use the OCR PDF tool to copy and extract text from a PDF after creating selectable text from your original file. 

How to convert PDF to Word with OCR

Did you know that you can convert PDF into an editable Word document?  Enable the OCR scanner in PDF to Word to convert scanned PDFs with professional results, and upgrade to Premium for higher limits when you process large volumes. 

The OCR scanner for the PDF to Word converter is optional, but selecting OCR ensures that the document is converted with even more accuracy. 

To make a PDF searchable using Word, go to the PDF to Word tool, upload your file, select the OCR option, and click Convert to Word. 

Frequently asked questions

How do I know if my PDF is already searchable?

Open it and press Ctrl+F, then search for a word you can see on the page. If nothing is found, the document has no text layer and needs OCR.

Does OCR change how my document looks?

No. The text layer sits invisibly behind the page image, so the document looks exactly as it did before.

Which languages are supported?

OCR PDF covers 14 languages including English, French, German, Italian, Portuguese, Spanish, Russian, Polish, Dutch, Danish, Finnish, Norwegian, Swedish and Turkish. Select the document language before converting for the best accuracy.

Can OCR read handwriting?

OCR is built for printed text. Handwriting gives unreliable results.

What resolution should I scan at?

300 DPI is the sweet spot. Lower resolutions lose character detail, higher ones make the file larger with little accuracy gained.

Go to the free online OCR PDF to text tool

Convert PDF to text with OCR