Browser Extensions That Actually Save You Money (10 Tested Picks)
Ten browser extensions that genuinely save money — tested across price tracking, cashback, couponing, and price history. Each one is rated for real-world value.
Most “money saving” browser extensions are junk. They slow down your browser, show too many notifications, and save you €3 a year. The ten below are different. Each is tested, each saves real money, and each is worth the install.
This is a list of ten extensions that actually save you money, across four categories: price tracking, cashback, coupons, and price history.
Price tracking
1. CamelCamelCamel (Chrome, Firefox, Edge — free)
CamelCamelCamel is a price tracker for Amazon. The extension shows the price history of every Amazon product, with the highest, lowest, and average price. The “Amazon price tracker” button on each product page shows you whether the current price is a deal.
What it saves you: The “is this a deal?” question. Without it, you don’t know if “20% off” is a real discount or a return to the normal price. With it, you do.
Caveat: Amazon-only. For non-Amazon prices, use Idealo or a price-comparison site.
Verdict: the best Amazon price tracker. Free, simple, accurate. Install it.
2. Keepa (Chrome, Firefox, Edge — free + paid)
Keepa is a more detailed Amazon price tracker. The extension shows the price history for new, used, and third-party listings, the buy box history (which specific seller had the buy box), and the price history across Amazon’s regional sites (US, UK, DE, etc.). The “data” view is the most detailed Amazon price tracking available.
What it saves you: the cross-region price comparison. The same product is often cheaper on Amazon Germany than on Amazon UK. Keepa makes that visible.
Caveat: the free version has limits; the paid version is €19/month. For most people, the free version is enough. For heavy Amazon shoppers, the paid version pays for itself.
Verdict: the most detailed Amazon price tracker. Install the free version; upgrade only if you need the data view.
Cashback
3. TopCashback (Chrome, Firefox, Edge — free)
TopCashback is a cashback extension that gives you cash back when you shop at participating retailers. The extension activates the cashback automatically when you visit a retailer, and the cash back is added to your TopCashback account. The cash back is real and the rates are competitive.
What it saves you: 1–15% on purchases at participating retailers. The cash back stacks with most other discounts, so you can use a coupon code AND get cash back. The cash back is paid out as cash (via bank transfer) or gift card.
Caveat: not all retailers participate. The cash back rates change frequently. The extension sometimes misses the activation (you have to click through the TopCashback site manually if it doesn’t).
Verdict: the most reliable cashback extension for European shoppers. Install it; the cash back accumulates quietly.
4. Honey (Chrome, Firefox, Edge — free)
Honey is a coupon-finding extension. The extension tests available coupon codes at checkout and applies the best one. The “honey” icon at checkout shows the available codes and the savings.
What it saves you: an average of 5–15% on purchases where coupons are available. The savings are real but not life-changing.
Caveat: Honey has been criticized for its relationship with retailers (some suggest the codes it tests are not always the best available). The savings are real, but the best coupon might be one Honey doesn’t have. For the biggest purchases, also check a site like RetailMeNot or Coupert manually.
Verdict: a good default. Install it for the occasional coupon. For big purchases, also check manually.
Coupon and cashback
5. Coupert (Chrome, Firefox, Edge — free)
Coupert is a Honey alternative. The extension tests coupon codes at checkout and offers cashback through a network of retailers. The “best” features are the cashback rates, which are often higher than Honey’s.
What it saves you: 3–15% on purchases at participating retailers, plus cashback. The cashback is paid out as cash or gift card.
Caveat: the cashback rates are higher than Honey’s, but the available retailers are smaller. For Amazon, Honey + TopCashback is the better combo. For other retailers, Coupert is worth trying.
Verdict: install it alongside Honey. The two complement each other.
Price history
6. Camelizer (CamelCamelCamel companion)
Camelizer is the in-browser companion to CamelCamelCamel. The extension adds a price-history chart to every Amazon product page. The chart is more detailed than the CamelCamelCamel website chart and is updated in real time.
What it saves you: the same as CamelCamelCamel (the ability to see if a “deal” is real). The convenience is the in-page display.
Caveat: Amazon-only.
Verdict: install it with CamelCamelCamel.
7. PriceBlink (Chrome, Firefox — free)
PriceBlink is a price-comparison extension. The extension shows the prices of the current product at other retailers when you visit a product page. The “compare prices” button at checkout shows the available coupons and cashback offers.
What it saves you: the cross-retailer comparison. If you’re on Amazon and PriceBlink shows the same product cheaper at Walmart, you see that immediately.
Caveat: the comparison is US-centric. For European shoppers, the data is limited.
Verdict: useful for US shoppers; less so for European shoppers.
Coupon code databases
8. RetailMeNot (Chrome, Firefox, Edge — free)
RetailMeNot is a coupon code database. The extension shows available coupon codes at checkout, with the success rate (percentage of users who successfully used the code) and the savings.
What it saves you: the same as Honey (5–15% on purchases with coupons). The success rate is useful — you can see which codes are most likely to work.
Caveat: RetailMeNot’s relationship with retailers is the same as Honey’s (some codes are not the best available). For the biggest purchases, also check a site like Slickdeals manually.
Verdict: install it with Honey and Coupert. The three together cover most coupon codes.
Affiliate and cashback (advanced)
9. Rakuten (Chrome, Firefox, Edge — free)
Rakuten (formerly Ebates) is a cashback extension. The extension activates cashback at participating retailers, and the cash back is paid out as cash (via cheque or PayPal) or as a gift card.
What it saves you: 1–10% on purchases at participating retailers. The cash back stacks with most other discounts. The “double cash back” promotions are the best value (e.g., 10% during holidays).
Caveat: the cash back rates are similar to TopCashback; the two are competitors. Pick one. (TopCashback is generally slightly higher in Europe; Rakuten is generally slightly higher in the US.)
Verdict: if you’re in the US and not yet using a cashback extension, start with Rakuten. If you’re in Europe, start with TopCashback.
Privacy and ad-blocking (bonus)
10. uBlock Origin (Chrome, Firefox, Edge — free)
uBlock Origin is an ad-blocker and privacy extension. The extension blocks ads, trackers, and malware sites. The “filter lists” are community-maintained and cover most ad networks.
What it saves you: the extension itself doesn’t save money directly. But by blocking ads, it reduces the impulse to buy. The savings are indirect but real: a study found that ad blockers reduce impulse purchases by 9–15%.
Caveat: some sites ask you to disable the ad blocker to access content. Don’t disable it; use a different site or pay for the content.
Verdict: the most important extension on this list. Install it first.
A word on the “real” savings
Each extension above saves real money, but the savings add up only if you use the extensions consistently. The biggest savings come from:
- uBlock Origin (reduces impulse purchases by 9–15%)
- TopCashback or Rakuten (2–10% on most online purchases)
- CamelCamelCamel or Keepa (10–30% on Amazon purchases by avoiding fake “deals”)
A typical shopper who installs all three and uses them consistently saves €200–€500 per year on the same shopping they would have done anyway. The savings are passive — the extensions do the work.
The common mistakes to avoid
Installing every “money saving” extension
Extensions slow down your browser. Install only the ones that save you the most: uBlock Origin, TopCashback (or Rakuten), CamelCamelCamel, and Honey (or Coupert). That’s four. Don’t install ten.
Trusting the “best coupon” without checking
The “best coupon” from Honey or Coupert is the best of the codes they have. It’s not necessarily the best coupon overall. For big purchases, also check RetailMeNot, the retailer’s own site, and a quick Google search.
Trusting the “lowest price” without checking
The “lowest price” from a comparison extension is the lowest among the retailers the extension tracks. The lowest overall might be at a retailer the extension doesn’t track. For big purchases, also check Idealo (Europe) or Google Shopping.
Trusting cashback without checking the terms
Cashback terms change. A 5% cashback offer might be reduced to 1% the day after you click. Always check the cashback rate in the extension before you buy, and screenshot the rate in case of disputes.
Frequently asked questions
What’s the single most important money-saving extension?
uBlock Origin. It doesn’t save money directly, but it reduces impulse purchases by blocking ads. The indirect savings are the largest of any extension.
What’s the best cashback extension for Europe?
TopCashback. The rates are competitive, the retailers are many, and the payout is straightforward.
What’s the best cashback extension for the US?
Rakuten (formerly Ebates). The rates are competitive, the retailers are many, and the payout is straightforward.
Do cashback extensions slow down the browser?
Modern cashback extensions (TopCashback, Rakuten) are well-optimized and don’t significantly slow the browser. Older or poorly-coded extensions (some Honey alternatives) can slow the browser noticeably. The extensions in this list are all well-optimized.
The bottom line
A money-saving extension is only worth installing if it saves you real money without slowing down your browser. The ten above are the best in their categories. Install uBlock Origin first, then TopCashback (or Rakuten) and CamelCamelCamel. Add Honey (or Coupert) if you shop at retailers that offer coupons. The four together will save you €200–€500 per year on the same shopping you would have done anyway. The savings are passive — the extensions do the work.