When selecting a boolean search generator, consider the following features:

Ease of Use: An intuitive interface that makes building complex queries simple.
Operator Support: Comprehensive support for AND, OR, NOT, parentheses, exact phrases, and wildcards.
Platform Specificity: Some generators are tailored for specific platforms like a linkedin boolean search generator, while others are more general (a universal boolean search generator).
Examples and Templates: Built-in boolean search examples or templates can be very helpful for beginners.
Export Functionality: Ability to copy or export your generated strings easily.
Free vs. Paid: Many excellent free boolean search generator options exist, but some advanced features might be behind a paywall.

Some tools even offer a boolean search automation tool that can integrate with other platforms or save your frequently used queries.