https://github.com/jaredrummler/sfntly

A Library for Using, Editing, and Creating SFNT-based Fonts
https://github.com/jaredrummler/sfntly

Last synced: 5 months ago
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A Library for Using, Editing, and Creating SFNT-based Fonts

• Host: GitHub
• URL: https://github.com/jaredrummler/sfntly
• Owner: jaredrummler
• License: apache-2.0
• Created: 2016-04-08T00:21:45.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2016-04-09T12:15:59.000Z (over 10 years ago)
• Last Synced: 2025-03-24T11:08:33.090Z (over 1 year ago)
• Language: Java
• Size: 9.02 MB
• Stars: 9
• Watchers: 3
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# sfntly

A slimmed down java version of [sfntly](https://github.com/googlei18n/sfntly) with a much smaller method count (Android friendly).

What is sfntly?

---------------

> sfntly is a Java and C++ library for using, editing, and creating sfnt container based fonts (e.g. OpenType, TrueType). This library was initially created by Google's Font Team and the C++ port was done by the Chrome team. It has been made open source.

> The basic features of sfntly are the reading, editing, and writing of an sfnt container font. Fonts that use an sfnt container include OpenType, TrueType, AAT/GX, and Graphite. sfntly isn't itself a tool that is usable by an end user - it is a library that allows software developers to build tools that manipulate fonts in ways that haven't been easily accessible to most developers. The sfntly library is available in Java with a partial C++ port. However, we have included some font tools that are built on top of sfntly: a font subsetter, font dumper, a font linter, some compression utilities.

> The uses of sfntly are really anything that you can think of that involves reading and/or editing fonts. Right now, the Java version is the core library used to power Google's Web Fonts project. There it is used for all font manipulation - to read font data, to pull apart fonts, and to then reassemble them before they are streamed out to a user. Portions of the font that are not needed - specific glyph ranges or features - are stripped using sfntly to minimize the size of the streamed font. The C++ port is used somewhat similarly within Chrome to subset fonts for insertion into a PDF for viewing or printing. Though the features stripped in the font are different in Chrome than in Web Fonts because the end use is different.

> Using sfntly you can read and extract any of the tables in a font. The tables are the individual data structures within the font for each of the features and functionality: glyph outlines, character maps, kerning, meta data, etc. If you look over the OpenType and TrueType specs, you will see a number of categories of tables. sfntly currently supports all of the required tables, the TrueType outline tables, bitmap glyph tables, and a couple of the other miscellaneous tables. This level of support provides for many of the needs developers have related to the informational reading of font data. It also covers a lot of the editing needs.

> To get started with sfntly: clone the repository and follow the quickstart.txt guide in the Java directory

> have fun

> Stuart Gill - sfntly Architect and Lead Developer