brief
OCRmyPDF is an open source tool designed to add an OCR (Optical Character Recognition) text layer to scanned PDF files to make them searchable or copy-pasteable. It supports multiple languages , can optimize PDF file size and maintain the resolution of the original image . The project has received over 26.8k stars on GitHub and is widely popular among developers.
Key Features
- OCR Text Layer: Convert scanned PDFs into searchable PDF/A format for easy text searching or copying.
- Multi-language support: Supporting more than 100 languages, users can
-lparameter to specify the language (e.g.-l eng+fra(English and French are supported). - Image Optimization: Optimize PDF images during the OCR process, which usually produces PDF files that are smaller than the original files.
- Page correction: Support for automatic rotation of skewed pages (
--rotate-pages) and correcting bent pages (--deskew). - multicore processing: Utilizes multi-core CPUs to accelerate OCR processing and improve efficiency.
- Privacy: Ensure that users' private data is not compromised.
- batch file: Ability to efficiently process large PDF files containing thousands of pages.
Fits the crowd
- office worker: Need to convert scanned paper documents into editable electronic documents.
- Library or archive: The need to digitize a large number of historical documents.
- developers: Want to integrate OCR functionality into your own applications.
- regular user: Individual users who occasionally need to deal with scanned PDF documents.
Installation
OCRmyPDF supports a variety of operating systems, including Linux, Windows, macOS and FreeBSD. the following are common installation methods:
- Debian/Ubuntu::
apt install ocrmypdf - macOS (Homebrew)::
brew install ocrmypdf - Windows Subsystem for Linux::
apt install ocrmypdf - Docker: Mirrors for x64 and ARM architectures are available.
More installation options can be found in官方文档The
summarize
OCRmyPDF is a powerful and easy-to-use tool to convert scanned PDF files into searchable electronic documents. Both individual users and businesses can use it to improve the efficiency of document processing. If you often need to deal with scanned PDF files, OCRmyPDF is definitely worth a try.
Official website link
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