We only show coupon codes that work.
Most coupon sites are walls of dead codes. Couponly finds, tests, and applies the ones that actually save you money — so you stop pasting expired codes one at a time.
Three steps, all automatic.
- 01
Discover
We continuously find coupon codes across the web and read store pages with machine learning — no user-submitted guesswork to wade through.
- 02
Verify
An AI layer tests offers and filters out the ones that no longer work, so a code you see is far more likely to actually save you money.
- 03
Apply
Our free browser extension tries the best working code for you at checkout automatically. You just see the lower total.
A shortlist that works beats a wall that doesn't.
- EXTRA10 — expired
- BIGSALE — didn't apply
- SAVE25 — members only
- DEAL2019 — expired
- HOLIDAY — didn't apply
You paste every one. None of them work.
- TAKE15 — applied, −$18.40
We test them first and apply the winner. You just see the lower total.
The coupon tool we always wanted.
Codes that work
We show coupons that actually apply, not a wall of stale codes padding a page for search traffic.
As little data as possible
We collect the minimum we need to find you savings — and nothing we don't.
Honest about money
We're transparent about affiliate relationships and how Couponly stays free to use.
How verification, ranking, and privacy actually hold up is laid out in one place — see why you can trust Couponly.
Ready to stop pasting dead codes?
Add Couponly to your browser and let it find the working code at checkout — free, and out of your way.