The feature should utilize a backend library (like unrar or node-unrar-js ) to programmatically extract the contents without manual user intervention.

To provide a more tailored "feature" description, could you clarify if this file is part of a , a gaming mod , or a cybersecurity investigation ?

: Since RAR extraction can be CPU-intensive, include a real-time progress bar and a "Estimated Time Remaining" indicator.

Given that .rar files are opaque to most basic scanners, a "Safe Preview" feature is essential: