Harbor Freight Coupons - HFQPDB

Never pay list price at harbor freight again! Searches hfqpdb.com database for best coupon by item number while browsing harbor freight's website and displays the price on the webpage next to the retail price. Changelog: 9/2/2025: - Added support for displaying coupons on the cart page - Added expiration date to coupon display - Resolved issue with duplicating coupons after adding an item to your cart 8/26/2025 - Complete overhaul, working coupon links on search and individual items pages plus added a "keepalive" function to keep the extension working after time passes.