Many users download trial versions of InkSaver (version 4.0.15, for instance) that limit you to 20 prints. The version removes these restrictions. It also unlocks the "Toner Save for Graphics" feature, which trial versions often block to encourage purchase.
For a safer alternative, many modern printers have built-in or "Eco-Mode" settings that achieve similar ink-saving results without requiring third-party software. InkSaver 4.0.205.0003 Full
by Software Shelf was a utility designed to reduce ink/toner consumption by intercepting print jobs and applying adjustable ink reduction levels before sending data to the printer. Version 4.0.205.0003 was a stable full release, often pre-activated or available with a serial. Many users download trial versions of InkSaver (version 4