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Most web browsers, like both Chrome and Firefox, can open PDFs themselves. It's completely fine to use, but I find it to be a somewhat bloated program with lots of features that you may never need or want to use. Adobe created the PDF standard and its program is certainly the most popular free PDF reader out there. Most people head right to Adobe Acrobat Reader when they need to open a PDF. PDF files always look identical on any device or operating system. The reason PDF is so widely popular is that it can preserve original document formatting. Some OCR systems can even reproduce formatted output that closely resembles the original page, including images, columns, and other non-textual components.The Portable Document Format (PDF) is a universal file format that comprises characteristics of both text documents and graphic images which makes it one of the most commonly used file types today. While early versions of OCR needed to be trained with images of each character and worked on one font at a time, advanced systems are now capable of producing highly accurate recognition for most fonts and support a variety of digital image file formats. OCR is a field of research in pattern recognition, artificial intelligence, and computer vision. Digitized text can be electronically edited, searched, stored more efficiently, and used in machine processes such as cognitive computing, machine translation, and text mining. OCR is commonly used to digitize printed text from paper records such as passports, invoices, bank statements, business cards, and mail. OCR technology can convert scanned documents, photos of documents, scene-photos, or subtitles superimposed on an image into machine-encoded text. Optical character recognition (OCR) is a process that converts images of typed, handwritten, or printed text into machine-readable text.
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