WhatsApp Chat Filter operates with complete respect for user privacy:
No Message Content Access: Extension only reads chat timestamps and contact names for filtering, never accesses message content
Local Processing: All filtering operations occur locally within the browser
No Data Collection: Extension does not collect, store, or transmit any personal data
No External Connections: Operates entirely within WhatsApp Web without external server communication
Metadata Only: Only processes publicly visible chat list information (names, timestamps) for filtering purposes