Aspose.Total for JavaScript via C++ includes the following document format APIs:

• Aspose.PDF for JavaScript via C++ - Easily work with PDF files directly in the browser. It is a scalable and feature-rich toolkit for processing PDFs using JavaScript. Developers can create their own JavaScript products and distribute them all over the web.
• Aspose.OCR for JavaScript via C++ - Allows you to extend your applications with optical character recognition capabilities. It supports several languages based on Latin and Cyrillic scrips as well as Chinese. The OCR API can recognize scanned images, smartphone photos, screenshots, areas of images and scanned PDFs and return results in popular document and data exchange formats. It is completely offline and does not require an internet connection to work. The API requires minimal effort to get started and a shallow learning curve to master. All pre-processing, skew correction, noise removal, language detection, multi-threading and other complex tasks are performed automatically, but can be tuned up to deal with hard cases.