nowfound

Dev tools · January 14, 2026

Coupon Shield

eComms can detect if a shopper is using a coupon extension

Coupon Shield launched on January 14, 2026 with 1 votes.

What it does

Lean, open source lib for Merchants to detect if a shopper is using a shady coupon extension like Honey, Klarna, Capital One Shopping or Rakuten.

Open source lib for Merchants to detect if a shopper is using a shady coupon extension like Honey, Klarna, Capital One Shopping or Rakuten. - cpreid/coupon-shield

Tool for eComm merchants to detect, warn and prevent a customer from shopping using a shady coupon browser extension. This will automatically detect a coupon extension and show a default warning to the user to disable the extension as shown above). Install this at the very top of the <head> in your webpage to ensure it runs prior to the extension. jsDelivr package page . < script src =" https://cdn.jsdelivr.net/npm/coupon-shield@latest/dist/auto.min.js " > </ script > Custom Usage (Browser Global) < script src =" https://cdn.jsdelivr.net/npm/coupon-shield@latest/dist/couponshield.min.js " > </ script > < script > window . couponShield . listen ( ( warn , vendor ) => { // Decide how you want…from github.com

Does a similar job

all alternatives →
  • Honey2013 · joinhoney.com · ▲324

    Honey automatically applies the best coupon code at checkout

  • cleanCART2021 · clean.io · ▲132

    Increase ecommerce profits by blocking coupon extensions

  • Bee Keeper for Shopify2023 · apps.shopify.com · ▲82

    Block and monitor coupon code leaks from websites like Honey

  • CouponMate2015 · couponmate.com · ▲92

    Browser extension that automagically searches for coupons

  • BCM AI Coupon Tool2024 · ▲61

    Your AI assistant for effortless coupon codes and discounts

  • CouponGPTs2023 · coupongpts.com · ▲10

    AI-Powered Tool for Easy Coupon and Promo Code Finds

More dev tools this month

the category →
  • Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

    Dev tools · 1d ago · github.com

  • /dev/null▲492

    a social network for devs

    Dev tools · 5d ago · dev-null.sh

  • open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

    Dev tools · 29d ago · github.com

  • Contribute to reladraw/reladraw development by creating an account on GitHub.

    Dev tools · 27d ago · github.com

  • OpenBot▲362

    Grok Bot alternative: free, local, open-source, multiplayer

    Dev tools · 25d ago · openbot.run

  • Talanoa▲346

    Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

    Dev tools · 22d ago · talanoa.email

Source: Product Hunt launch ↗

Launched alongside, January 2026

the whole month →
  • IN

    Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http:&#x2F;&#x2F;cannoneyed.com&#x2F;projects&#x2F;isometric-nyc

    AI · Jan 2026 · cannoneyed.com

  • Cowork▲1,088

    Turn Claude into your digital coworker

    AI · Jan 2026 · claude.com

  • DataFast▲867

    Revenue-first analytics

    Growth · Jan 2026 · datafa.st

  • OpenClaw▲836

    The AI that actually does things

    AI · Jan 2026 · openclaw.ai

  • Automatic AI-powered code reviews the moment you open a PR

    Dev tools · Jan 2026 · kilo.ai

  • AI Content Maker, for Social Media Publishing

    AI · Jan 2026 · postsyncer.com