CashBackStacks Firefox

CashBackStacks

Find and stack the best cashback from shopping portals, credit cards, card-linked offers, and gift cards. Track prices with alerts.
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Features & Capabilities

Maximize your cashback, airline miles, and credit card rewards while shopping at over 48,000 stores.

CashBackStacks automatically layers portal cashback, credit card rewards, card-linked offers, and gift card discounts into one personalized stack—so you always know the best combination before you buy.

🛍️ ON-PAGE SHOPPING WIDGET A lightweight widget appears on supported stores to show your full cashback stack: the best portal, your optimal credit card, activated offers, and gift card savings—all in one glance.

📊 COMPARE 50+ SHOPPING PORTALS Instantly compare cashback rates from 50+ portals including Rakuten, TopCashback, Swagbucks, ShopBack, and more. See which portal pays the most for any store—updated in real time while you shop.

✈️ EARN AIRLINE MILES & TRAVEL POINTS Track rewards from airline and travel shopping portals including Delta SkyMiles, United MileagePlus, American AAdvantage, and more. Never miss an opportunity to earn miles on everyday purchases.

💳 YOUR CARDS, YOUR REWARDS Add your credit cards to see personalized category bonuses at every store. CashBackStacks highlights your best card for each purchase so you always know which card to pull out.

🔗 SYNC & ACTIVATE CARD-LINKED OFFERS Sync offers from Amex, Chase, Capital One, PayPal, and other card-linked offer providers. Search all your offers in one place, activate them with one click, and stack them with portal cashback for maximum savings.

🎁 GIFT CARD STACKING Compare discounted gift cards from 14+ providers across 4,000+ brands. See exactly how much extra you save by buying a gift card before checking out—automatically factored into your stack total.

🔥 AI-SCORED DEAL FEED Browse today's hottest cashback deals scored by machine learning. Filter by heat level—Warm, Hot, or Blazing—and spot money-maker deals, all-time highs, and rate spikes before they expire.

🔍 SEARCH ENGINE CASHBACK BADGES See cashback rates directly in Google, Bing, and DuckDuckGo search results. Know which stores offer cashback before you even click.

📈 RATE HISTORY & TRENDS View historical rate charts and sparklines to see if today's offer is a good deal or if you should wait. Track rate trends over time so you never settle for a mediocre rate.

🛒 PRICE TRACKING & ALERTS Track product prices from popular retailers. Set price drop alerts and get notified when items hit your target price.

🔔 WATCHLIST WITH ALERTS Save your favorite stores and products to a watchlist. Receive alerts when cashback rates increase or prices drop—right in the extension and via email.

🔒 PRIVACY-FIRST Your data stays in your browser. Synced offers, saved cards, and watchlists are stored locally—not on external servers.

See additional details and learn more at https://cashbackstacks.com

User Growth & Download Statistics

Manifest V3 Add-on
By:
CashBackStacks
Daily users:
2 -1
Rating:
5.00
(1)
Version:
1.1.1 Last updated: 2026-06-04
Version code:
6291730
Creation date:
2026-01-26
Risk:
Very high risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • https://www.amazon.com/*
  • https://www.amazon.ca/*
  • https://www.amazon.com.mx/*
  • https://www.amazon.com.br/*
  • https://www.amazon.co.uk/*
  • https://www.amazon.de/*
  • https://www.amazon.fr/*
  • https://www.amazon.it/*
  • https://www.amazon.es/*
  • https://www.amazon.nl/*
    • See more
Content scripts matches:
  • *
  • duckduckgo.com
  • search.yahoo.com
  • www.bing.com
  • www.ecosia.org
  • www.google.ca
  • www.google.co.in
  • www.google.co.jp
  • www.google.co.kr
  • www.google.co.nz
    • See more
Size:
1.61MB
Email:
su*****@cashbackstacks.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-18
Compare stats and ranking:

Ranking

# 58,263 ▼ 7,900
Other rankings
#43 in rakuten keyword 32 ▼ 4#96 in cashback keyword 53 ▼ 11

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
CashBackStacks
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/cashbackstacks/
Email:
su*****@cashbackstacks.com
Website:
https://cashbackstacks.com

Permission Change History

2026-06-04: Version 1.0.7 → 1.1.1
Add Optional host permissions: https://*.usbank.com/*
Remove Permissions: tabs notifications
Add Optional permissions: notifications
2026-03-23: Version 1.0.3 → 1.0.4
Add Host permissions: https://*.cashbackstacks.pages.dev/* https://cdn.cashbackstacks.com/*
Remove Host permissions: https://cashbackstacks-prod.web.app/* https://cashbackstacks-prod.firebaseapp.com/*
2026-03-08: Version 1.0.0 → 1.0.1
Add Host permissions: https://www.amazon.com/* https://www.amazon.ca/* https://www.amazon.com.mx/* https://www.amazon.com.br/* https://www.amazon.co.uk/* https://www.amazon.de/* https://www.amazon.fr/* https://www.amazon.it/* https://www.amazon.es/* https://www.amazon.nl/* https://www.amazon.in/* https://www.amazon.co.jp/* https://www.amazon.com.au/* https://cashbackstacks-prod.web.app/* https://cashbackstacks-prod.firebaseapp.com/* https://cashbackstacks.com/* https://www.cashbackstacks.com/* https://capitaloneshopping.com/* https://www.capitaloneshopping.com/* https://www.paypal.com/* https://clerk.cashbackstacks.com/* https://improved-boa-70.clerk.accounts.dev/*
Add Optional host permissions: https://capitaloneoffers.com/* https://www.capitaloneoffers.com/* https://*.americanexpress.com/* https://*.chase.com/* https://*.citi.com/* https://www.simplymiles.com/*
Remove Permissions: https://www.amazon.com/* https://www.amazon.ca/* https://www.amazon.com.mx/* https://www.amazon.com.br/* https://www.amazon.co.uk/* https://www.amazon.de/* https://www.amazon.fr/* https://www.amazon.it/* https://www.amazon.es/* https://www.amazon.nl/* https://www.amazon.in/* https://www.amazon.co.jp/* https://www.amazon.com.au/* https://cashbackstacks-prod.web.app/* https://cashbackstacks-prod.firebaseapp.com/* https://cashbackstacks.com/* https://www.cashbackstacks.com/* https://capitaloneshopping.com/* https://www.capitaloneshopping.com/* https://www.paypal.com/* https://clerk.cashbackstacks.com/* https://improved-boa-70.clerk.accounts.dev/*
2026-03-07: Version 0.4.1 → 1.0.0
Remove Host permissions: https://cashbackstacks.com/* https://www.cashbackmonitor.com/* https://capitaloneshopping.com/* https://www.capitaloneshopping.com/* https://www.paypal.com/* https://www.amazon.com/* https://www.amazon.ca/* https://www.amazon.com.mx/* https://www.amazon.com.br/* https://www.amazon.co.uk/* https://www.amazon.de/* https://www.amazon.fr/* https://www.amazon.it/* https://www.amazon.es/* https://www.amazon.nl/* https://www.amazon.in/* https://www.amazon.co.jp/* https://www.amazon.com.au/* https://cashbackstacks-prod.web.app/* https://cashbackstacks-prod.firebaseapp.com/* https://cashbackstacks.com/* https://www.cashbackstacks.com/*
Remove Optional host permissions: https://capitaloneoffers.com/* https://www.capitaloneoffers.com/* https://global.americanexpress.com/* https://*.chase.com/* https://*.citi.com/* https://www.simplymiles.com/*
Add Permissions: declarativeNetRequestWithHostAccess https://www.amazon.com/* https://www.amazon.ca/* https://www.amazon.com.mx/* https://www.amazon.com.br/* https://www.amazon.co.uk/* https://www.amazon.de/* https://www.amazon.fr/* https://www.amazon.it/* https://www.amazon.es/* https://www.amazon.nl/* https://www.amazon.in/* https://www.amazon.co.jp/* https://www.amazon.com.au/* https://cashbackstacks-prod.web.app/* https://cashbackstacks-prod.firebaseapp.com/* https://cashbackstacks.com/* https://www.cashbackstacks.com/* https://capitaloneshopping.com/* https://www.capitaloneshopping.com/* https://www.paypal.com/* https://clerk.cashbackstacks.com/* https://improved-boa-70.clerk.accounts.dev/*

Is CashBackStacks Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CashBackStacks requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • Critical ******* ****** ** *** ********* ******** *************** ********** ********* *********** ********** ****** ****** ****** ****** ****** ****** ******* ******* ******* ******* ******* *********** ********** ********** ********** ********** ********** ********** ********** ********************* *********************** ******************** ********* *********** ********** *********** **************** ******************* *********** ********** ********** ********** ********** ********** ********** ********** ********** ************
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CashBackStacks is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
  • Good **** ********* *** **** **** *******
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