Entwickler-Tools7 Min. Lesezeit21. März 2026

OCR für PDF online kostenlos durchführen

Kurzantwort:
Sie können OCR online kostenlos auf PDFs mit dem OCR-Tool von EasyTools24 anwenden. Laden Sie Ihr gescanntes PDF hoch und das Tool extrahiert den gesamten erkennbaren Text und macht ihn kopierbar und durchsuchbar. Alles wird in Ihrem Browser verarbeitet.

Bereit zum text extrahieren (ocr)? Nutzen Sie unser kostenloses Tool Text extrahieren (OCR) — kein Upload noetig.

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What Is PDF OCR?

PDF OCR applies Optical Character Recognition to PDF documents that contain scanned images rather than selectable text. Many PDFs — especially scanned documents, old records, and faxed papers — are essentially image files packaged as PDFs.

OCR reads the text visible in these scanned pages and converts it to actual text data. After OCR processing, you can copy, search, and edit the text that was previously locked in an image.

Why Use OCR on PDFs?

Scanned PDFs without OCR are limited and frustrating:

1. Extract Text for Editing

Scanned PDFs do not allow text selection. OCR extracts the text so you can copy it into Word documents, spreadsheets, or other editable formats.

2. Make Documents Searchable

Without OCR, you cannot search a scanned PDF for specific words or phrases. OCR converts the image text to searchable content, making it easy to find information.

3. Archive Old Documents

Organizations scan paper archives into PDFs for digital storage. OCR ensures these scanned documents are searchable and their content is accessible for future reference.

4. Process Forms and Records

Scanned forms, invoices, and records need OCR to extract structured data. The extracted text can be entered into databases, accounting systems, or CRM tools.

How to OCR a PDF — Step-by-Step Guide

Extract text from your scanned PDF:

Step 1: Open the OCR Tool

Navigate to the Extract Text (OCR) tool in any browser. No software installation or account required.

Step 2: Load Your Scanned PDF

Drag and drop your scanned PDF into the tool. The PDF is rendered in your browser and never uploaded to any server.

Step 3: Run OCR Processing

The tool analyzes each page of the PDF using tesseract.js OCR. It identifies and extracts all readable text from the scanned document images.

Step 4: Copy or Download the Text

Review the extracted text in the output area. Copy it to your clipboard for pasting into other applications, or download it as a text file.

Tips for Better PDF OCR Results

Scan at High Resolution

When scanning paper documents, use 300 DPI or higher. Higher resolution scans produce dramatically better OCR results compared to 100 or 150 DPI scans.

Ensure Clean Scans

Crooked pages, shadows, and stains reduce OCR accuracy. Straighten the document and ensure even lighting when scanning for the best text recognition results.

Check Results Carefully

OCR is highly accurate but not perfect. Always proofread the extracted text, especially for numbers, proper names, and unusual formatting that OCR may misinterpret.

Common Use Cases

PDF OCR is essential for:

Legal professionals extracting text from scanned contracts and court filings
Accountants processing scanned invoices and financial records
Researchers extracting data from scanned academic papers
HR departments digitizing scanned employee records and applications
Government offices converting paper archives to searchable digital records
Students extracting text from scanned textbook pages for notes

Haeufig gestellte Fragen

Can I OCR a scanned PDF for free?+

Yes. The Extract Text (OCR) tool on EasyTools24 is completely free. No registration, no file limits, no watermarks. Processing happens in your browser.

How accurate is PDF OCR?+

OCR accuracy for well-scanned documents is typically 95-99%. Results depend on scan quality, resolution, and text clarity. High-resolution scans with clear text produce the best results.

Is my scanned PDF kept private?+

Yes. The OCR processing runs entirely in your browser using tesseract.js. Your PDF is never uploaded to any server, stored, or transmitted. 100% private and secure.

What languages does PDF OCR support?+

The tesseract.js OCR engine supports over 100 languages. It can recognize text in English, Spanish, French, German, Chinese, Japanese, Korean, Arabic, and many more.

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