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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
BeeLine Reader is a software system which adds color gradients to digital text to improve reading ability and focus. The text at the end of each line is colored the same as the beginning of the next, so the color of the text acts as a flag post that directs the reader's eyes through the text more easily.
Sumatra PDF is a free and open-source document viewer that supports many document formats including: Portable Document Format (PDF), Microsoft Compiled HTML Help (CHM), DjVu, EPUB, FictionBook (FB2), MOBI, PRC, Open XML Paper Specification (OpenXPS, OXPS, XPS), and Comic Book Archive file (CB7, CBR, CBT, CBZ). [3]
Skim is an open-source PDF reader. It is notably the first free software PDF reader for macOS. [2] It is written in Objective-C, and uses Cocoa APIs. It is released under a BSD license. It is also cited as being able to help annotate and read scientific papers. [3]
This is a category of articles relating to free software for making or viewing Portable Document Format (PDF) documents. That is, software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy.
Javelin PDF Reader is a full functionality secure PDF reader for Windows, macOS, iOS/iPadOS (iPad and iPhone) and Android, with support for Digital Rights Management (DRM) using encoded and encrypted PDF files in Drumlin's DRMX and DRMZ formats. PDF files that have been converted to the DRMX and DRMZ formats (using the free DrumlinPublisher ...
Soda View/3D is a free PDF application users can use to open, view, and create PDF files. The flipping animation tool of its patent-pending 3D feature enables users to go through pages of PDF files. [6]
The first mark sense scanner was the IBM 805 Test Scoring Machine; this read marks by sensing the electrical conductivity of graphite pencil lead using pairs of wire brushes that scanned the page. In the 1930s, Richard Warren at IBM experimented with optical mark sense systems for test scoring, as documented in US Patents 2,150,256 (filed in ...