Given the crazy prices in NYC stores, I do most of my shopping online. Amazon Prime, in particular, has been a lifesaver, as something like a bag of dog food costs about 50% less there than it does at the PetCo in my neighborhood.

But when shopping on Amazon, I’ll often find several vendors selling the same thing at different prices, so I spend a fair amount of time searching around the site to make sure I’m getting the best deals.

Similarly, when I’m buying from any other site, before I check out, I Google around for potential coupon codes, then try them out on my cart. Though that, too, takes a bit of time, I can often save 10-15%, and I’m cheap enough for that to justify the effort.

Over the weekend, however, I discovered Honey, a great Chrome extension that does both of those things automatically. Now, I can save minutes and save money.

On Amazon, Honey will mark a given item as the best-priced version of that product, or link you across to a cheaper iteration of the same thing.

And, elsewhere (say, JCrew, PsPrint, or Intuit), it will test out coupon codes for you behind the scenes at checkout, automatically entering the one that gives you the largest discount.

It’s a small tool, but one that (especially if you shop mostly online) can add up to big savings. Try Honey, and save some time and money yourself.