The author created 175 pixel fonts using Rust and wrote their own toolchain for generating, quality testing, and deploying these fonts. The fonts support the Latin character set and include style variations, kerning tables, and automatic kerning. The author's goal was to create a definitive pixel font pack with high-quality fonts that can be used in various games and applications. The process involved studying font design, creating a custom tool, and automating tasks such as kerning and deployment.