What is OCR?
Optical Character Recognition, usually abbreviated to OCR, is the mechanical or electronic translation of scanned images of handwritten, typewritten or printed text into machine-encoded text.
Why Perform OCR?
OCR is widely used to convert books and documents such as scanned paper documents, PDF files or images captured by a digital camera into electronic files, to computerize a record-keeping system in an office, or to publish the text on a website. OCR makes it possible to edit the text, search for a word or phrase, store it more compactly, display or print a copy free of scanning artifacts, and apply techniques such as machine translation, text-to-speech and text mining to it. OCR is a field of research in pattern recognition, artificial intelligence and computer vision.
OCR systems require calibration to read a specific font; early versions needed to be programmed with images of each character, and worked on one font at a time. “Intelligent” systems with a high degree of recognition accuracy for most fonts are now common. Some systems are capable of reproducing formatted output that closely approximates the original scanned page including images, columns and other non-textual components.
Before performing OCR, the entire area on the page is selected and highlighted and no text can be searched and edited.
After performing OCR, text on the page can be selected with selecting tool, you can search and edit character, word, and paragraphs easily.
PDF OCR Tool
PDF Editor (for Windows users) and PDF Editor Pro for Mac (for Mac users) can perform OCR on your scanned PDF document to make the text editable and searchable. It allows you to export scanned PDF to formatted text based Word, Excel, PowerPoint, EPUB, HTML, and Text for editing and reuse. After performing OCR with PDF Editor Pro for Mac, you can also convert scanned PDF to the editable formats you need.
How to perform OCR to scanned PDF files?
Step 1. Download and Install the Software
Firstly, download the trial version of Wondershare PDFelements from the above download link. Choose Windows or Mac version as you need.
Double click the executive installation file and follow the on-screen instructions to finish the installation.
*Note: The trial version has the same function with the registered version of PDFelement. But the output PDF file will be with watermark for the trial version. You can easily remove the watermark when you get the program registered with a valid PDFelement Registration Code.
Step 2. Enable PDF OCR Plug-in
OCR Plug-in is available for PDFelement registered users. If you have already get this program registered, please follow the steps to perform OCR to scanned PDF.
For Windows users, you should buy OCR Plug-in at first.
- The moment you complete the purchase process, you’ll receive an email that includes the OCR Plug-in download link and registration code.
- Check your email and download the OCR Plug-in installation package by clicking the OCR Plug-in download link. Then double click to install the OCR plug-in.
- Enter the licensed email and registration code to active the OCR Plug-in.
Step 3. Performing OCR to Scanned PDF
Now it’s time to open a scanned PDF with the PDF editing tool. There will be a message reminding you of performing OCR. A click of the Perform OCR option will turn the scanned documents into editable files. What’s more, you can select the language of the current PDF file for better recognition.
For Mac users, OCR plugin is integrated into the PDFelement for Mac and it can be used to turn your scanned PDF files into editable and searchable documents directly. Once you open a scanned PDF, a notice will show you in the Information Bar to remind you of performing OCR. You can easily click the Perform OCR button to starting perform OCR for the whole PDF file. After some minutes, the scanned PDF pages can be edited as you need. Click Edit menu on the right Tools Pane, and you can modify them as you want.
After performing OCR, the scanned the scanned PDF pages pages can be editead as you need. Click Edit menu and you can modify them as you want.