How to Use Adobe Acrobat OCR and PDF Optimization Workflow
Question details
The user wants to understand the optimal step-by-step workflow for making scanned PDFs searchable via OCR and reducing their overall file size without losing essential document quality.
- Product
- Adobe Acrobat Pro DC
- Device & OS
- not provided
- Scenario
- Enhancing scanned documents, running text recognition, and compressing the final PDF output.
- Observed behavior
- The user needs clarity on the sequence of operations between Enhance Scanned Pages, Text Recognition, and PDF Optimization tools to achieve the best balance of file size and quality.
Always save a backup copy of your original PDF document before running optimization, as aggressive file compression can permanently reduce image quality or discard embedded fonts.
Execute the Complete OCR and Optimization Workflow
Follow this specific sequence of tools in Adobe Acrobat Pro DC to ensure high-quality text recognition before compressing your file.
To achieve the best results, it is crucial to perform image enhancements and Optical Character Recognition (OCR) before applying file compression. Compressing the file first can degrade image quality, leading to inaccurate text recognition.
Open your PDF in Acrobat. Go to 'Tools' > 'Scan & OCR' > 'Enhance' > 'Scanned Document'. This will deskew, sharpen, and improve the contrast of the original scan.
In the same 'Scan & OCR' toolbar, click 'Recognize Text' > 'In This File'. Review the document to ensure the text is now selectable and searchable.
Once OCR is verified, go to 'File' > 'Save As Other' to access the file reduction tools.
Select 'Reduced Size PDF' for an automatic, predefined compression, or choose 'Optimized PDF' to manually control image downsampling, font un-embedding, and object removal.
Perform PDF OCR and File Compression Easily with WPS Office
WPS Office offers a comprehensive PDF toolkit that allows you to instantly extract text from scanned documents using highly accurate OCR, and then seamlessly compress the PDF to save space using an intuitive interface.
- 1. Open your PDF: Launch WPS Office and open your scanned PDF document.
- 2. Run OCR: Navigate to the 'Tools' tab and click on the 'OCR' button to recognize and extract text.
- 3. Compress the PDF: Return to the 'Tools' tab and select 'Compress' to open the file reduction settings.
- 4. Save the Document: Choose your desired compression level and save the optimized PDF to your device.
Frequently Asked Questions
What is the difference between Reduced Size PDF and Optimized PDF in Acrobat?
Reduced Size PDF uses automated, predefined compression settings to shrink files quickly. Optimized PDF provides custom settings, allowing you to selectively compress images, unembed specific fonts, and discard hidden metadata without sacrificing necessary display quality.
Why should I enhance and run OCR before optimizing a PDF?
Enhancing the document straightens skewed pages and sharpens blurry text. Compressing a PDF beforehand lowers image resolution, which can significantly decrease the accuracy of the OCR engine. Always make the text searchable first.
Can PDF optimization permanently ruin my document?
Aggressive optimization can permanently lower image quality and remove embedded fonts, altering how the document displays on other devices. This is why it is highly recommended to save a backup of your original scanned file before applying optimization.
