Never Search for a
Promo Code Again.
The free Hadenfy browser companion automatically detects discount input boxes at checkout, tests all verified promotional codes in seconds, and applies the highest saving for you.
Built for Smart Shoppers
Everything you love about Hadenfy coupon verification, built seamlessly into your online shopping cart.
Instant Auto-Apply
When you reach the checkout page of a supported merchant, Hadenfy automatically appears with a one-click button to test all working codes sequentially.
Always the Biggest Discount
Hadenfy calculates the cart total difference for every single coupon, throwing away failed codes and keeping only the one that puts the most dollars back in your pocket.
Multi-Retailer Comparison
Shopping on Amazon, Walmart, or Best Buy? Hadenfy checks alternate retailer prices in real-time so you never pay more than necessary.
How Hadenfy Works in 3 Easy Steps
Zero complicated configurations. Ready to save immediately after installation.
Add Extension
Add the Hadenfy extension to your Chrome browser in just a couple clicks. No credit card or payment required.
Shop as Usual
Browse Nike, Amazon, Target, Sephora, or any of your favorite stores. The extension quietly watches in the background.
Save at Checkout
When you go to pay, Hadenfy detects the coupon box and auto-applies the highest discount automatically!
Installation & Setup Guide
Install the extension package directly in Chrome with developer mode enabled.
How to Load Hadenfy Extension in Google Chrome
Step-by-step instructions for loading the extension package
- 1
Download or extract the extension folder
The extension package is located in the repository at
/extension. - 2
Open Chrome Extensions Manager
In your Google Chrome URL bar, navigate to
chrome://extensionsand hit Enter. - 3
Turn on "Developer mode"
Toggle the switch in the top right corner of the Extensions page labeled Developer mode.
- 4
Click "Load unpacked"
Click the Load unpacked button in the top left header and select the
extensiondirectory.
Frequently Asked Questions
Is the Hadenfy Chrome Extension really 100% free?
Yes, absolutely! Hadenfy is completely free for shoppers. When you use one of our verified coupons or sales, retailers may pay us a small affiliate commission at zero additional cost to you.
Does Hadenfy sell or share my personal data?
No. Hadenfy does not sell, trade, or track your personal search history or sensitive payment details. The extension only inspects the active domain at checkout to match it against verified coupon databases.
Which stores work with the extension?
Hadenfy supports over 500+ top retailers including Nike, Amazon, Sephora, Target, Best Buy, Walmart, Macy's, Home Depot, and thousands of Shopify and WooCommerce merchant stores.