--- title: "How to OCR a Scanned PDF" description: "Learn how to OCR a scanned PDF to make it searchable and selectable. Step-by-step guide to using optical character recognition on PDFs with PDF Genie." date: 2026-04-15 author: PDF Genie tags: [ocr pdf, scanned pdf, optical character recognition, searchable pdf, pdf tools] --- # How to OCR a Scanned PDF ## How to OCR a Scanned PDF A scanned PDF is essentially a photograph of a document. The text looks readable to your eyes, but your computer treats the whole page as an image — meaning you cannot search it, select text, copy a passage, or have a screen reader interpret it. **OCR (Optical Character Recognition)** fixes this by analyzing the image and converting recognized characters into real, selectable text. This guide explains how to **OCR a scanned PDF** using PDF Genie's free online tool. ## Why OCR Your Scanned PDFs? - **Make text searchable** — find any word in the document with Ctrl+F / Cmd+F. - **Enable copy-paste** — extract quotes, data, or passages without retyping. - **Improve accessibility** — screen readers and assistive technology can only work with real text, not images. - **Enable editing** — once OCR is applied, you can convert the file to Word using [PDF to Word](/pdf-to-word) and edit the content. - **Better archiving** — searchable PDFs are far more useful in document management systems. ## How to OCR a Scanned PDF (Step-by-Step) PDF Genie's [OCR PDF tool](/ocr-pdf) processes your document in the cloud and returns a searchable PDF in seconds. ### Step 1: Open the OCR Tool Go to [PDF Genie's OCR PDF tool](/ocr-pdf). No account or software installation is needed. ### Step 2: Upload Your Scanned PDF Click **Choose File** or drag your scanned PDF into the upload area. Both single-page and multi-page documents are supported. ### Step 3: Select Language Choose the primary language of the document. Selecting the correct language improves recognition accuracy, especially for documents with special characters or accented letters. ### Step 4: Run OCR Click **Run OCR**. Processing time depends on the number of pages. A 10-page document typically takes under 30 seconds. ### Step 5: Download the Searchable PDF Download the processed PDF. You can now search, select, and copy text throughout the document. ## Tips for Better OCR Results - **Start with a clean scan** — OCR accuracy depends on image quality. Use at least 300 DPI when scanning paper documents. - **Straighten crooked pages** — skewed text significantly reduces accuracy. Most scanner apps have an auto-straighten option. - **Remove noise and shadows** — scan in a well-lit environment and avoid shadows across the page. - **Check the output** — OCR is very accurate but not perfect. Review the resulting text for any misread characters, especially in tables or columns. - **Convert after OCR** — once your PDF has been OCR'd, use [PDF to Word](/pdf-to-word) to extract the text into an editable document if needed. - **Split large documents first** — for very large scanned documents, consider [splitting them](/split-pdf) into smaller chunks before running OCR. ## Common Questions **What languages does the OCR tool support?** PDF Genie's OCR tool supports most major world languages, including English, French, Spanish, German, Italian, Portuguese, and many more. Select your language from the dropdown for best results. **Will OCR work on a PDF that is already partially text?** Yes. The tool recognizes which pages contain image content and applies OCR only where needed. **Does OCR alter the visual appearance of the PDF?** No. The PDF looks identical. OCR adds a hidden text layer beneath the visible image, so the document's appearance is unchanged. **What is a good DPI for scanning?** 300 DPI is the minimum recommended for readable OCR. 400–600 DPI is better for small or handwritten text. ## Try It Now Make your scanned documents searchable in seconds with [PDF Genie's free OCR PDF tool](/ocr-pdf) — upload, process, and download with no sign-up required.