OCR a PDF
Optical character recognition turns a picture of text into actual text. Accuracy varies enormously with scan quality, language and layout - and the results are rarely perfect.
62 tools here do less than the name of this job suggests, and each one's profile says what it actually does. That sentence is on the profile rather than repeated on every row.
62 options · Sources read 16 October 2026 · No OCR accuracy measurements have been made for this index. Language support and output format are as each vendor documents them.
- What it takes, and what it produces
- In: images, or a PDF of scans. Out: text, or a PDF carrying a searchable text layer.
- What limits it
- Language data and page counts are per tool, and accuracy follows the scan more than the engine. Where a vendor publishes a page cap the record carries it.
OCR tools: controls, file handling and cost
These are different ways to do the same job. The order does not indicate quality, and where we have not checked something the row says so rather than guessing.
- 62
- tools handle this job
- 20
- keep the file on your device
- Observed by us, or no server anywhere in the path. Of the other 42: 12 upload your file; 23 process some versions on your device and run others on a server; 4 are documented as staying local but have not been tested; 2 run on a server you provide; 1 has no established answer.
62 tools for OCR
Ordered by relevance to this job, not by payment. Our overall ranking is in the full index.
- Price Free tierLicence Not verifiedYour files Uploads - claimed
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Our pick 1: Run it yourself and nothing leaves your network. Redaction deletes the matching text without flattening the page - we tested that on our own instance.
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Our pick 3: Desktop splitting and merging with no upload, and a policy that states plainly that no PDF content is sent to their servers.
- Price FreeLicence Proprietary Microsoft…Your files Uploads - claimed
Choosing between them
- Tesseract OCR vs OCRmyPDF The OCR engine, and the tool built on top of it.
- What to use instead of ABBYY FineReader PDF
Every listing here is a real product with a real website, checked for whether it is still working. Nothing on this page is paid for and no placement can be bought. Where we have not verified something, the row says so rather than guessing.
Choosing between a searchable PDF and a text file
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A searchable PDF or a text file
A searchable PDF keeps the pages as they look and adds an invisible text layer behind them. A text export throws the layout away and gives you the words. They solve different problems.
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Language and alphabet
Most engines take a language parameter, and a page run through the wrong one returns confident nonsense rather than an error. Mixed-language documents are harder still.
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Accuracy on your scan, not in general
Accuracy depends on resolution, skew, contrast and typeface. A tool that is excellent on a clean 300 dpi office scan can be poor on a photograph of a receipt, and no general figure predicts which.
Check the result
- - Search the finished file for a word you know is on the page, including a number and a proper noun.
- - Look at a name and a date specifically. Digits and unusual names are where recognition fails first, and a wrong character is invisible unless you look.
- - Check the reading order by selecting a paragraph, not just a line.
- - Check that the original page image is still there, because a searchable PDF should look unchanged.
Sources and scope
Every fact on this page comes from a vendor's own page. Each profile records the URL we read, the date, and the SHA-256 of the text, so a reader can check the bytes.
- ABBYY FineReader PDF 2 sourced claims, read 21 September 2026
- Tesseract OCR 1 sourced claim, read 16 October 2026
- Adobe Acrobat 4 sourced claims, read 21 September 2026
- Scanbot SDK 2 sourced claims, read 22 September 2026
- CamScanner 2 sourced claims, read 22 September 2026
- Foxit PDF Editor 2 sourced claims, read 22 September 2026
- Genius Scan 2 sourced claims, read 22 September 2026
- gImageReader 1 sourced claim, read 22 September 2026
- Google Cloud Vision API and Document AI 2 sourced claims, read 22 September 2026
- Tesseract.js 2 sourced claims, read 22 September 2026
- Adobe Scan 2 sourced claims, read 21 September 2026
- Azure AI Document Intelligence 2 sourced claims, read 22 September 2026
- Scanner Pro 2 sourced claims, read 22 September 2026
- Amazon Textract 2 sourced claims, read 22 September 2026
- Apryse 2 sourced claims, read 22 September 2026
- PDF-XChange Editor 2 sourced claims, read 22 September 2026
- Power PDF 2 sourced claims, read 22 September 2026
- SwiftScan 2 sourced claims, read 22 September 2026
- Marker 2 sourced claims, read 22 September 2026
- Mindee 1 sourced claim, read 16 October 2026
- OpenDocScan 2 sourced claims, read 14 October 2026
- PyMuPDF 3 sourced claims, read 22 September 2026
- Wondershare PDFelement 1 sourced claim, read 22 September 2026
- Adobe PDF Library 2 sourced claims, read 1 October 2026
- Foxit PDF SDK 2 sourced claims, read 1 October 2026
- LlamaParse 2 sourced claims, read 1 October 2026
- PDF Studio 2 sourced claims, read 22 September 2026
- Surya 2 sourced claims, read 16 October 2026
- Adobe PDF Extract API 2 sourced claims, read 22 September 2026
- AvePDF 1 sourced claim, read 22 September 2026
- LEADTOOLS PDF SDK 3 sourced claims, read 16 October 2026
- PDF2Go 1 sourced claim, read 22 September 2026
- iLovePDF 1 sourced claim, read 22 September 2026
- Master PDF Editor 2 sourced claims, read 22 September 2026
- Microsoft Lens 2 sourced claims, read 22 September 2026
- Nitro PDF Pro 1 sourced claim, read 21 September 2026
- Nougat 2 sourced claims, read 1 October 2026
- Nutrient 2 sourced claims, read 22 September 2026
- PDF Architect 2 sourced claims, read 21 September 2026
- PDF Candy 3 sourced claims, read 22 September 2026
- PDF Expert 2 sourced claims, read 22 September 2026
- PDFgear 2 sourced claims, read 22 September 2026
- pdfRest 2 sourced claims, read 1 October 2026
- Reducto 2 sourced claims, read 16 October 2026
- Smallpdf 3 sourced claims, read 22 September 2026
- Soda PDF 1 sourced claim, read 22 September 2026
- Stirling PDF 1 sourced claim, read 22 September 2026
- Syncfusion PDF 2 sourced claims, read 22 September 2026
- PrizmDoc 3 sourced claims, read 22 September 2026
- Docling 2 sourced claims, read 22 September 2026
- Google Chrome built-in PDF viewer 2 sourced claims, read 22 September 2026
- Apache Tika 2 sourced claims, read 1 October 2026
- Ghostscript 2 sourced claims, read 22 September 2026
- PDFsam 2 sourced claims, read 22 September 2026
- SnackPDF 3 sourced claims, read 22 September 2026
- iText 2 sourced claims, read 22 September 2026
- Microsoft OneDrive document scanning 2 sourced claims, read 22 September 2026
- PREP 3 sourced claims, read 16 October 2026
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