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authorKarl Berry <karl@freefriends.org>2020-05-14 17:47:47 +0000
committerKarl Berry <karl@freefriends.org>2020-05-14 17:47:47 +0000
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parent4aabfd8ab8cb4d327dcbac9b7318ff1718e505d5 (diff)
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-This is poppler, a PDF rendering library.
-
-Poppler is a fork of the xpdf PDF viewer developed by Derek Noonburg
-of Glyph and Cog, LLC. The purpose of forking xpdf is twofold.
-First, we want to provide PDF rendering functionality as a shared
-library, to centralize the maintenance effort. Today a number of
-applications incorporate the xpdf code base, and whenever a security
-issue is discovered, all these applications exchange patches and put
-out new releases. In turn, all distributions must package and release
-new version of these xpdf based viewers. It's safe to say that
-there's a lot of duplicated effort with the current situation. Even if
-poppler in the short term introduces yet another xpdf derived code
-base to the world, we hope that over time these applications will
-adopt poppler. After all, we only need one application to use poppler
-to break even.
-
-Second, we would like to move libpoppler forward in a number of areas
-that don't fit within the goals of xpdf. By design, xpdf depends on
-very few libraries and runs a wide range of X based platforms. This
-is a strong feature and reasonable design goal. However, with poppler
-we would like to replace parts of xpdf that are now available as
-standard components of modern Unix desktop environments. One such
-example is fontconfig, which solves the problem of matching and
-locating fonts on the system, in a standardized and well understood
-way. Another example is cairo, which provides high quality 2D
-rendering. See the file TODO for a list of planned changes.
-
-Please note that xpdf, and thus poppler, is licensed under the GPL,
-not the LGPL. Consequently, any application using poppler must also
-be licensed under the GPL. If you want to incorporate Xpdf based PDF
-rendering in a closed source product, please contact Glyph & Cog
-(www.glyphandcog.com) for commercial licensing options. Note that
-this only allows you to use xpdf in a closed source product,
-not poppler itself.
-
- Kristian Høgsberg, Feb. 27, 2005
-
-
-See the README-XPDF for the original xpdf-3.03 README.