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As with Adobe Acrobat, Nitro PDF Pro's reader is free; but unlike Adobe's free reader, Nitro's free reader allows PDF creation (via a virtual printer driver, or by specifying a filename in the reader's interface, or by drag-'n-drop of a file to Nitro PDF Reader's Windows desktop icon); Ghostscript not needed. PagePlus: Proprietary: No
Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...
Website. pdf .abbyy .com. ABBYY FineReader PDF is an optical character recognition (OCR) application developed by ABBYY. [2] [3] First released in 1993, the program runs on Microsoft Windows ( Windows 7 or later) and Apple macOS (10.12 Sierra or later). Since v15, the Windows version can also edit PDF files.
Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Website. google .com /glass. Google Glass, or simply Glass, is a brand of smart glasses developed and sold by Google. It was developed by X (previously Google X), [ 9 ] with the mission of producing a ubiquitous computer. [ 1 ] Google Glass displays information to the wearer using a head-up display. [ 10 ]
Foxit PDF Reader. Foxit PDF Reader (formerly Foxit Reader) is a multilingual freemium PDF ( Portable Document Format) tool that can create, view, edit, digitally sign, and print PDF files. [3] Foxit Reader is developed by Fuzhou, China-based Foxit Software. Early versions of Foxit Reader were notable for startup performance and small file size. [4]
Proprietary ( freeware or trialware) Website. acrobat.com. Adobe Acrobat is a family of application software and Web services developed by Adobe Inc. to view, create, manipulate, print and manage Portable Document Format (PDF) files. [16] The family comprises Acrobat Reader (formerly Reader), Acrobat (formerly Exchange) and Acrobat.com.
Products. Nitro Software offers a PDF editor, a browser-based application for electronic signatures, and various PDF productivity tools. Subscription services feature cloud-based user management, deployment, and analytics tools. The company also manages several document conversion websites. Nitro Software's desktop products are compatible with ...