UNDERSTANDING OCR AND PDF TEXT EXTRACTION A practical introduction to turning scanned documents and images into searchable, usable text. PLAINSCAN | Learn more: plainscan.com OCR & PDF TEXT EXTRACTION 01 / 06 1. What is OCR? OCR stands for Optical Character Recognition. It is technology that detects printed or handwritten characters in an image and converts them into machine-readable text. A scanned page is often stored as an image. OCR helps software recognise the letters and words inside that image so the content can be searched, copied, and reused. Think of OCR as a bridge between a picture of a document and text that a computer can work with. OCR & PDF TEXT EXTRACTION 02 / 06 2. How does OCR work? 01 Upload or capture Start with a clear scan, photo, or image-based PDF. 02 Prepare the image The software may straighten pages, reduce noise, and improve contrast. 03 Recognise characters OCR analyses shapes and identifies likely letters, numbers, and words. 04 Review the result Check the extracted text and correct recognition mistakes. OCR & PDF TEXT EXTRACTION 03 / 06 3. Why can scanned PDFs be difficult to use? A scanned PDF may contain page images rather than an underlying text layer. That can make ordinary text search, selection, and copying unavailable until OCR is applied. Common challenges • Low-resolution or blurry scans can make characters hard to distinguish. • Skewed pages and uneven lighting can affect recognition. • Unusual fonts, handwriting, tables, and multi-column layouts may need extra review. • Similar-looking characters (such as O and 0) can be confused. Tip: A clear, straight, high-quality scan usually gives OCR a better starting point. OCR & PDF TEXT EXTRACTION 04 / 06 4. Getting better text extraction results Before OCR • Use the clearest original document available. • Keep the page straight and fully visible. • Avoid shadows, glare, and motion blur. After OCR • Proofread names, dates, amounts, and technical terms. • Compare important passages with the source page. • Check tables and reading order before reusing the text. OCR output should be reviewed before it is used for important decisions or records. OCR & PDF TEXT EXTRACTION 05 / 06 5. Explore document tools with Plainscan Plainscan is a document-focused online service. Visit its website to explore the available tools and current features for working with PDFs and text extraction. https://plainscan.com/ A useful workflow: start with a clear document, extract the text, review the result, and keep the original file for reference. Educational overview • Prepared for document-literacy and OCR awareness