World Library  
Flag as Inappropriate
Email this Article

Liberation fonts

Article Id: WHEBN0011172360
Reproduction Date:

Title: Liberation fonts  
Author: World Heritage Encyclopedia
Language: English
Subject: Croscore fonts, GPL font exception, OCR-B, Doulos SIL, Google Fonts
Collection: 2007 Introductions, Free Software Unicode Typefaces, Open-Source Typefaces, Unified Serif and Sans-Serif Typeface Families
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Liberation fonts

Liberation Sans
Category Sans-serif
Foundry Ascender Corp.
License

SIL Open Font License (version 2 onwards)

GPL v2 with some exceptions (older versions)[1]
Liberation Serif
Category Serif
Foundry Ascender Corp.
License

SIL Open Font License (version 2 onwards)

GPL v2 with some exceptions (older versions)[1]
Liberation Mono
Category Monospace
Foundry Ascender Corp.
License

SIL Open Font License (version 2 onwards)

GPL v2 with some exceptions (older versions)[1]

Liberation is the collective name of four TrueType font families: Liberation Sans, Liberation Sans Narrow, Liberation Serif and Liberation Mono. These fonts are metrically compatible with Monotype Corporation's Arial, Arial Narrow, Times New Roman, and Courier New (respectively), the most commonly used fonts on Microsoft Windows operating system and Office suite, for which they are intended as free substitutes.[2]

Contents

  • Characteristics 1
  • Unicode coverage 2
  • History 3
  • Distribution 4
  • See also 5
  • References 6
  • External links 7

Characteristics

Liberation Sans, Liberation Sans Narrow and Liberation Serif closely match the metrics of Monotype Corporation fonts Arial, Arial Narrow and Times New Roman, respectively.

Liberation Mono is styled closer to Liberation Sans than Monotype's Courier New, though its metrics match with Courier New.

The Liberation fonts are intended as free, open-source replacements of the aforementioned commercial fonts.

Unicode coverage

All three fonts supported IBM/Microsoft code pages 437, 737, 775, 850, 852, 855, 857, 860, 861, 863, 865, 866, 869, 1250, 1251, 1252, 1253, 1254, 1257, the Macintosh Character Set (US Roman), and the Windows OEM character set, that is only the Latin, Greek, and Cyrillic alphabets, leaving out many writing systems. Extension to other writing systems was prevented by its unique licensing terms.[3] Since the old fonts were replaced by the Croscore equivalents, expanded Unicode coverage has become possible.

History

The fonts were developed by Steve Matteson of Ascender Corporation as Ascender Sans and Ascender Serif. A variant of this font family, with the addition of a monospaced font and open-source license, was licensed by Red Hat, Inc. as the Liberation font family.[4] Liberation Sans and Liberation Serif derive from Ascender Sans and Ascender Serif respectively; Liberation Mono uses base designs from Ascender Sans and Ascender Uni Duo.

The fonts were developed in two stages. The first release of May 2007 was a set of fully usable fonts, but they lacked the full hinting capability. The second release, made available in the beginning of 2008, provides full hinting of the fonts.

In April 2010, Oracle Corporation contributed the Liberation Sans Narrow typefaces to the project.[5] They are metrically compatible to the popular Arial Narrow font family.[6] With Liberation Fonts 1.06 the new typefaces were officially released.[7]

Distribution

Red Hat licensed these fonts from Ascender Corp under the GNU General Public License with a font embedding exception, which states that documents embedding these fonts do not automatically fall under the GNU GPL. As a further exception, any distribution of the object code of the Software in a physical product must provide the right to access and modify the source code for the Software and to reinstall that modified version of the Software in object code form on the same physical product on which it was received.[8] Thus, these fonts permit free and open source software (FOSS) systems to have high-quality fonts that are metric-compatible with Microsoft software.

The Fedora Project, as of version 9 was the first major GNU/Linux distribution to include these fonts by default and features a slightly revised versions of the Liberation fonts contributed by Ascender. These include a dotted zero and various changes made for the benefit of internationalization.[9][10]

Some other GNU/Linux distributions (such as

  • Official website for sources and TTF files
  • Sources for development
  • Liberation Sans font (Red Hat-related), Fontsy .

External links

  1. ^ a b c "License", Liberation Fonts, Fedora .
  2. ^ a b Liberation Fonts, Fedora 
  3. ^ a b Willis, Nathan (2012-06-19). "Liberation fonts and the tricky task of internationalization". LWN. Retrieved 2012-07-16. 
  4. ^ Webbink, Mark (2007-05-09). "Liberation Fonts".  
  5. ^ "Liberation-fonts changelog". Retrieved 2010-11-11. 
  6. ^ "OpenOffice.org 3.3 New Features". Retrieved 2010-11-11. 
  7. ^ Pravin, S (Jul 2010), Liberation Sans release 1.06 (Blogger) ( .
  8. ^ License.txt - LICENSE AGREEMENT AND LIMITED PRODUCT WARRANTY, LIBERATION FONT SOFTWARE, retrieved 2010-01-15 
  9. ^ Bugzilla entries for the revised Liberation fonts included in Fedora 9, Red Hat Bugzilla – Bug List
  10. ^ Bugzilla screenshot of the revised Liberation Mono font with dotted zero, Red Hat Bugzilla - Bug #252149 (Image)
  11. ^ "opensuse-oss-i586/liberation2-fonts-2.00.1-2.1.1.noarch.rpm". /liberation2-fonts-2.00.1-2.1.1.noarch.rpm 
  12. ^ Mandriva Linux 2008 Release Tour, retrieved 2010-04-04, integrated into Mandriva Linux 2008 
  13. ^ Packages included in Mandriva Linux 2010 Free x86-64 linked from http://wiki.mandriva.com/en/Mandriva_Linux_2010#Package_Lists, retrieved 2010-04-04, FREE-2010-x86_64 /main/fonts-ttf-liberation-1.04-2mdv2010.0.noarch 
  14. ^ "OpenOffice.org Wiki - External/Modules". Retrieved 2010-01-31. 
  15. ^ "OpenOffice.org - Issue 77705 - Liberation font and OOo". Retrieved 2010-02-05. 
  16. ^ "OpenOffice.org - Issue 104723 - Update Liberation fonts to v1.05.1.20090721". Retrieved 2010-02-05. 
  17. ^ "OpenOffice.org - Issue 111719 - Update Liberation fonts to v1.06". Retrieved 2010-10-28. 
  18. ^ ooo-build - patches - dev300 (OpenOffice.org 3.xx patches), retrieved 2010-01-31 
  19. ^ "Liberation vs Croscore fonts". 

References

  • Croscore fonts, derived and extended from Liberation fonts.
  • Droid, a font family by the same font designer
  • Open-source Unicode typefaces
  • Linux Libertine, another free software serif typeface with OpenType features support
  • Gentium, an Open Font License font which defines roughly 1,500 glyphs covering almost all the range of Latin characters used worldwide

See also

Due to licensing concerns with fonts released under a GPL license, some projects looked for alternatives to the Liberation fonts.[3] Starting with Apache OpenOffice 3.4 Liberation Fonts were replaced with the Chrome OS Fonts[19] – also known as Croscore fonts: Arimo (sans), Cousine (monospace), and Tinos (serif) – which are newer versions of the same designs but made available by Ascender Corporation under the Apache License 2.0. As of July 18, 2012, Liberation Fonts 2.00.0 and above are a fork of the Chrome OS Fonts released under the SIL Open Font License, and no longer include the Liberation Sans Narrow fonts.[2]

[18][17][16][15][14]

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.