Author Archives: coherent

New: Coherent PDF Python API v2.4

A Python interface to our popular PDF command line tools has been released for sale. It provides a single static or shared library containing our whole PDF library and CPDF interface. Pre-built binaries are available for Windows, Linux and MacOS. … Continue reading

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New: Coherent PDF C API v2.4

A C interface to our popular PDF command line tools has been released for sale. It provides a single static or shared library containing our whole PDF library and CPDF interface. Pre-built binaries are available for Windows, Linux and MacOS. … Continue reading

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Coherent PDF Command Line Tools 2.4

CPDF Command Line Tools 2.4 is now available. New features and improvements: o New operation -extract-imageso New operation -output-json et al. to export PDF files in JSON formato New operations to manipulate Optional Content Groupso New operation -stamp-as-xobject to add … Continue reading

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New book: Python from the Very Beginning

A new introductory book on Python has been published, patterned after the successful books OCaml from the Very Beginning and Haskell from the Very Beginning. It can be obtained on the book’s own website, in electronic form, or from Amazon … Continue reading

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New book: Haskell from the Very Beginning

The book Haskell from the Very Beginning, has now been published. A printed copy may be obtained from Amazon for $29.99: https://www.amazon.com/dp/095767113X/ In Haskell from the Very Beginning John Whitington takes a no-prerequisites approach to teaching the basics of a … Continue reading

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CPDF 2.3 Released

Coherent PDF Tools Version 2.3 have been released. This version adds some new features, and some improvements to existing ones: Improvements to malformed file reading Directly set and remove Trim, Art, and Bleed boxes Dump attachments to file Extended bookmark … Continue reading

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Coherent PDF Command Line Tools 2.2

CPDF 2.2 is now out, with many new features, and increased speed and reliability, especially for large or encrypted files. The formerly separate product smpdf for lossless compression of PDF files is now included in cpdf at no extra cost. Perform arithmetic … Continue reading

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A Machine Made this Book: Ten Sketches of Computer Science

Coherent Press launches a new Popular Science book about Computer Science. How do we decide where to put ink on a page to draw letters and pictures? How can computers represent all the world’s languages and writing systems? What exactly … Continue reading

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Coherent PDF Command Line Tools 2.1

CPDF 2.1 is now out, with some new features and work under the hood to improve encryption and speed on large files Encryption now much, much faster Faster parsing of delayed object streams on large files -decompress now leaves object … Continue reading

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Community Release of PDF Command Line Tools

The cpdf tool has been available commercially since 2007, and is widely used in industry and government. The same technology is used in the Proview PDF Editor for the mac. Now we’re releasing it for free, under a special not-for-commercial-use license. Binaries for Windows, Mac … Continue reading

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