I’m working on:

- DietPDF ( https://github.com/Zigazou/dietpdf-haskell ) an intensive PDF optimizer which tries to reduce PDF size as best as it can while preserving visual quality. It relies on a lot of tricks to achieve this goal (minification, precision reduction, deletion of superfluous operations, concatenations, filter combination etc.). At the present moment, I'm trying to implement CCITT Fax encoding/decoding.