Hey DEV community! 👋
I wanted to share a product we recently launched — Deal Miner, a free browser extension that helps travelers automatically find hidden hotel deals while browsing sites like Booking.com, Expedia, and Hotels.com.

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🚨 The Problem

As frequent travelers (and perfectionists), we were constantly jumping between tabs trying to compare hotel prices — only to realize at checkout that extra resort fees and taxes made everything more confusing. Even worse, some of the best rates were buried behind membership paywalls, loyalty logins, or “private” offers we never knew about.

There was no simple way to know:
👉 Am I getting the best final price?
👉 Is this cheaper somewhere else?
👉 Should I book now, or wait?

💡 The Idea

We built Deal Miner as a small, privacy-friendly browser extension that runs silently in the background and alerts you if it finds a better final price — including taxes and hidden fees — for the same hotel you’re currently viewing.

No need to re-enter searches, juggle tabs, or manually compare.
Just browse normally — Deal Miner handles the rest.

🛠️ Tech Stack

  • Core: JavaScript, WebExtension APIs, HTML/CSS

  • Browser support: Chrome, Firefox(incl. Android), Edge, Safari (incl. iOS via Safari)

  • Data: Custom scraping + aggregation, fallback to affiliate APIs where available

  • Backend: Node.js, lightweight Firebase services for logging & alerts

  • No user accounts. No tracking. Just local logic + extension messaging

🧪 Early Feedback

  • Users love the “invisible until useful” approach — no clutter, no popups.

  • The final price comparison (with taxes!) is a huge trust builder.

  • We’re actively adding support for Hilton, Marriott, Amex Travel, and more.

🎯 Who It’s For

  • Travel hackers

  • Digital nomads

  • Budget-conscious travelers

  • Anyone who just doesn’t want to overpay

🗺️ What’s Next

  • Mobile-native support for Safari and Firefox on iOS

  • Price drop tracking + notifications

  • More integrations with loyalty programs and credit card rewards

If you’re curious, you can try it out here 👉 https://getdealminer.com
We’re also happy to hear feedback, ideas, or bug reports!

Have you built a browser extension before? What lessons did you learn?

Let’s chat 👇