Szyszka is a simple but powerful and fast bulk file renamer.

Features:
- Written in Rust
- Simple GUI created using GTK3
- Multiple rules which can be freely combined:
  - Replace text
  - Trim text
  - Add text
  - Add numbers
  - Purge text
  - Change letters to upper-/lowercase
  - Custom rules
- Ability to edit, reorder rules and results
- Handle even hundreds thousands of records