kc3-lang/harfbuzz/README.md

Branch - branch -main

• Show log

  Commit

• Hash : b86f22c1
  Author :
  Date : 2025-08-20T15:13:37
  

  [README] Remove Canva
  
  Unclear if they use HB, not rust libraries.
  

Download

---

Source

• README.md

• [![Linux CI Status](https://github.com/harfbuzz/harfbuzz/actions/workflows/linux.yml/badge.svg)](https://github.com/harfbuzz/harfbuzz/actions/workflows/linux.yml)
  [![macoOS CI Status](https://github.com/harfbuzz/harfbuzz/actions/workflows/macos.yml/badge.svg)](https://github.com/harfbuzz/harfbuzz/actions/workflows/macos.yml)
  [![Windows CI Status](https://github.com/harfbuzz/harfbuzz/actions/workflows/msvc.yml/badge.svg)](https://github.com/harfbuzz/harfbuzz/actions/workflows/msvc.yml)
  [![OSS-Fuzz Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/harfbuzz.svg)](https://oss-fuzz-build-logs.storage.googleapis.com/index.html#harfbuzz)
  [![Coverity Scan Build Status](https://scan.coverity.com/projects/15166/badge.svg)](https://scan.coverity.com/projects/harfbuzz)
  [![Packaging status](https://repology.org/badge/tiny-repos/harfbuzz.svg)](https://repology.org/project/harfbuzz/versions)
  [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/harfbuzz/harfbuzz/badge)](https://securityscorecards.dev/viewer/?uri=github.com/harfbuzz/harfbuzz)
  
  
  # HarfBuzz
  
  HarfBuzz is a text shaping engine. It primarily supports [OpenType][1], but also
  [Apple Advanced Typography][2]. HarfBuzz is used in Android, Chrome,
  ChromeOS, Firefox, GNOME, GTK+, KDE, Qt, LibreOffice, OpenJDK, XeTeX,
  PlayStation, Microsoft Edge, Adobe Photoshop, Illustrator, InDesign,
  Godot Engine, Unreal Engine, QuarkXPress, Figma, and other places.
  
  [![xkcd-derived image](xkcd.png)](https://xkcd.com/2347/)
  
  For bug reports, mailing list, and other information please visit:
  
    http://harfbuzz.org/
  
  For license information, see [COPYING](COPYING).
  
  ## Documentation
  
  For user manual as well as API documentation, check: https://harfbuzz.github.io
  
  ## Download
  
  For tarball releases of HarfBuzz, look [here][3]. At the same place you
  will also find Win32/Win64 binary bundles that include `libharfbuzz` DLL,
  `hb-view.exe`, `hb-shape.exe`, and all dependencies.
  
  The canonical source tree is available on [github][4].
  Both development and user support discussion around HarfBuzz happens on
  [github][4] as well.
  
  The API that comes with `hb.h` will not change incompatibly. Other, peripheral,
  headers are more likely to go through minor modifications, but again, we do our
  best to never change API in an incompatible way. We will never break the ABI.
  
  The API and ABI are stable even across major version number jumps. In fact,
  current HarfBuzz is API/ABI compatible all the way back to the 0.9.x series.
  If one day we need to break the API/ABI, that would be called a new a library.
  
  As such, we bump the major version number only when we add major new features,
  the minor version when there is new API, and the micro version when there
  are bug fixes.
  
  ## Development
  
  For build information, see [BUILD.md](BUILD.md).
  
  For custom configurations, see [CONFIG.md](CONFIG.md).
  
  For testing and profiling, see [TESTING.md](TESTING.md).
  
  For using with Python, see [README.python.md](README.python.md). There is also [uharfbuzz](https://github.com/harfbuzz/uharfbuzz).
  
  For cross-compiling to Windows from Linux or macOS, see [README.mingw.md](README.mingw.md).
  
  To report bugs or submit patches please use [github][4] issues and pull-requests.
  
  ### Developer documents
  
  To get a better idea of where HarfBuzz stands in the text rendering stack you
  may want to read [State of Text Rendering 2024][6].
  Here are a few presentation slides about HarfBuzz at the
  Internationalization and Unicode Conference over the years:
  
  - 2014 – [Unicode, OpenType, and HarfBuzz: Closing the Circle][7]
  - 2012 – [HarfBuzz, The Free and Open Text Shaping Engine][8]
  - 2016 – [Ten Years of HarfBuzz][20]
  - 2009 – [HarfBuzz: the Free and Open Shaping Engine][9]
  
  More presentations and papers are available on [behdad][11]'s website.
  In particular, the following _studies_ are relevant to HarfBuzz development:
  
  - 2025 – [AAT layout caches][24]
  - 2025 – [OpenType Layout lookup caches][23]
  - 2025 – [Introducing HarfRust][22]
  - 2025 – [Subsetting][21]
  - 2025 – [Caching][12]
  - 2025 – [`hb-decycler`][13]
  - 2022 – [`hb-iter`][14]
  - 2022 – [A C library written in C++][15]
  - 2022 – [The case of the slow `hb-ft` `>h_advance` function][18]
  - 2022 – [PackTab: A static integer table packer][16]
  - 2020 – [HarfBuzz OT+AAT "Unishaper"][19]
  - 2014 – [Building the Indic Shaper][17]
  - 2012 – [Memory Consumption][10]
  
  
  ## Name
  
  HarfBuzz (حرف‌باز) is the literal Persian translation of “[OpenType][1]”,
  transliterated using the Latin script. It also means "talkative" or
  "glib" (also a nod to the GNOME project where HarfBuzz originates from).
  
  > Background: Originally there was this font format called TrueType. People and
  > companies started calling their type engines all things ending in Type:
  > FreeType, CoolType, ClearType, etc. And then came OpenType, which is the
  > successor of TrueType. So, for my OpenType implementation, I decided to stick
  > with the concept but use the Persian translation. Which is fitting given that
  > Persian is written in the Arabic script, and OpenType is an extension of
  > TrueType that adds support for complex script rendering, and HarfBuzz is an
  > implementation of OpenType complex text shaping.
  
  ## Distribution
  
  <details>
    <summary>Packaging status of HarfBuzz</summary>
  
  [![Packaging status](https://repology.org/badge/vertical-allrepos/harfbuzz.svg?header=harfbuzz)](https://repology.org/project/harfbuzz/versions)
  
  </details>
  
  [1]: https://docs.microsoft.com/en-us/typography/opentype/spec/
  [2]: https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6AATIntro.html
  [3]: https://github.com/harfbuzz/harfbuzz/releases
  [4]: https://github.com/harfbuzz/harfbuzz
  [6]: https://behdad.org/text2024
  [7]: https://docs.google.com/presentation/d/1x97pfbB1gbD53Yhz6-_yBUozQMVJ_5yMqqR_D-R7b7I/preview
  [8]: https://docs.google.com/presentation/d/1ySTZaXP5XKFg0OpmHZM00v5b17GSr3ojnzJekl4U8qI/preview
  [9]: https://behdad.org/doc/harfbuzz2009-slides.pdf
  [10]: https://docs.google.com/document/d/12jfNpQJzeVIAxoUSpk7KziyINAa1msbGliyXqguS86M/preview
  [11]: https://behdad.org/
  [12]: https://docs.google.com/document/d/1_VgObf6Je0J8byMLsi7HCQHnKo2emGnx_ib_sHo-bt4/preview
  [13]: https://docs.google.com/document/d/1Y-u08l9YhObRVObETZt1k8f_5lQdOix9TRH3zEXaoAw/preview
  [14]: https://docs.google.com/document/d/1o-xvxCbgMe9JYFHLVnPjk01ZY_8Cj0vB9-KTI1d0nyk/preview
  [15]: https://docs.google.com/document/d/18hI56KJpvXtwWbc9QSaz9zzhJwIMnrJ-zkAaKS-W-8k/preview
  [16]: https://docs.google.com/document/d/1Xq3owVt61HVkJqbLFHl73il6pcTy6PdPJJ7bSouQiQw/preview
  [17]: https://docs.google.com/document/d/1wMPwVNBvsIriamcyBO5aNs7Cdr8lmbwLJ8GmZBAswF4/preview
  [18]: https://docs.google.com/document/d/1wskYbA-czBt57oH9gEuGf3sWbTx7bfOiEIcDs36-heo/preview
  [19]: https://prezi.com/view/THNPJGFVDUCWoM20syev/
  [20]: https://behdad.org/doc/harfbuzz10years-slides.pdf
  [21]: https://docs.google.com/document/d/1_vZrt97OorJ0jA1YzJ29LRcGr3YGrNJANdOABjVZGEs/preview
  [22]: https://docs.google.com/document/d/1aH_waagdEM5UhslQxCeFEb82ECBhPlZjy5_MwLNLBYo/preview
  [23]: https://docs.google.com/document/d/1hRd5oYQJLrt0JuwWhEJWi7wh_9rbaIJkX6IR9DW7rZQ/preview
  [24]: https://docs.google.com/document/d/1a3K6fHjsiWW36vSzwJwCwEBOgznunKs80PSpBbpfHiA/preview
  

Download