Lindenberg Software

Font documentation and test tools

icon for FontRenderDiffOur font documentation and test tools assist in documenting and testing fonts and in preparing script documentation. ➜ more information

Keyboards and fonts for iPhone and iPad

icon for Balinese Font and Keyboard appOur apps for iOS are now available from Lontar GmbH.

Technical notes

Issues in Devanagari cluster validation

August 25, 2020

Following up on our investigation of Khmer syllable validation, we looked at Devanagari, hoping for a better result, but no: The Unicode Standard and the OpenType documentation don’t agree on the definition of a valid Devanagari cluster, and Devanagari cluster validation in OpenType shaping engines and in fonts produces inconsistent results.   

Support for Brahmic scripts in OpenType font rendering

November 17, 2019

Support for Brahmic scripts in OpenType font renderers can vary, not only between operating systems, but also between browsers and applications.   

The challenge of Brahmic scripts

August 22, 2019

In this introduction to a series of articles on creating fonts for Brahmic scripts, we look at the features of Brahmic scripts that present some challenges in font development.   

Issues in Khmer syllable validation

January 13, 2019

The Unicode Standard and the OpenType documentation don’t agree on the definition of a valid Khmer syllable, and Khmer syllable validation in OpenType shaping engines and in fonts produces inconsistent results.